Document Files, Types, Formats, Extensions

Document Files, Types, Formats, Extensions

Extension Name Extension Type Category Dev.Company File Format Description
.1 File Extension Unix Section 1 Man Page Misc N/A Text Manual page (or "man page") used by the Man utility, a Unix program used to view user manuals; contains Plain Text Documentation separated into several segments and delimited by standard markers; used for storing a level 1 user manual.
.{PB File Extension Corel WordPerfect Document Index File Data Corel Unknown File created by WordPerfect, a word processing program; contains search and index information for referencing WordPerfect Documents; used by the program for performing fast lookups through Documents.
.ASP File Extension Adobe Color Separation Setup File Settings Adobe Systems Unknown Contains color separation options that can be loaded by Adobe programs such as Photoshop; used for defining preferences for color separations when you print, export to PDF, or export your Document to another program; includes ink color types, separation type, and ink limit; referenced for images using color modes such as RGB and CMYK; similar to the .AST Adobe file extension.
.AUX File Extension LaTeX Auxiliary File Settings N/A Text File created by TeX and LaTeX, which are typesetting standards often used to generate academic papers and other technical Documentation; contains information about a Document such as footNotes, bibliography entries, and cross-references.
.ABW File Extension AbiWord Document Text AbiSource Unknown Word processing Document created with AbiWord, a free word processor developed by the AbiSource community; supports rich text formatting, advanced Document layouts, images, tables, lists, and footNotes.
.ADT File Extension ACT! Document Template Data Sage Software Unknown Template for creating a new word processing Document in ACT! contact management software; used for creating multiple Documents with a similar layout.
.ASD File Extension Word AutoSave File Backup Microsoft Binary File created by Microsoft Word, a word processing program used to author Documents; contains a snapshot copy of the currently opened Word Document; used for automatic Backup and recovery of Documents in Word in case of an unplanned disruption or program crash.
.ACT File Extension ADPCM Compressed Audio File Audio N/A Unknown Audio Format recorded by some voice recorders and MP3 players; compressed using Adaptive Differential Pulse Code Modulation.
.ACT File Extension ADPCM Compressed Audio File Audio N/A Unknown Audio Format recorded by some voice recorders and MP3 players; compressed using Adaptive Differential Pulse Code Modulation.
.ADI File Extension Active@ Disk Image Backup File Backup Active@ Data Recovery Software Binary Disk image created by Active@ Disk Image, a Backup and recovery program; may contain a Backup of a hard drive, media disc, or other external storage device; can be part of a split archive or a full Backup.
.ATC File Extension AutoCAD Tool Catalog File Settings Autodesk Binary Tool catalog file used by the AutoCAD design and Documentation CAD software; contains definitions for all of the tools in a user interface palette; used for storing tool configurations and customizing the AutoCAD workspace.
.AVC File Extension Avid Media Composer Script Video Avid Technology Unknown Video script created by Avid Media Composer professional video editing software; saves a transcript that goes along with a Documentary, narrative, or other video production; allows the text to be organized with video segments.
.ACP File Extension Alfresco Content Package Backup Alfresco Software Zip File used by Alfresco, an open source Enterprise Content Management (ECM) software package; contains data exported from an Alfresco repository; includes XML metadata files and the content files, which may be Documents, Web files, images, records, or any other type of data supported by the Alfresco repository model.
.AML File Extension ACPI Machine Language File System The ACPICA Project Binary System file written in the ACPI (Advanced Configuration and Power Interface) Machine Language (AML), a low-level Language used for configuring hardware properties; often used to boot Mac OS X on non-Apple hardware ("Hackintosh" systems), such as P55 motherboards; also used for enabling greater hardware compatibility and improving system performance.
.APX File Extension Ability Photopaint Studio Image Raster Image Ability Plus Software Binary Image created by Ability Photopaint Studio, a drawing program included with Ability Office; support multiple editing layers as well as brushes, fills, Shapes, and other standard raster graphic editing features; can be used for generating graphics used in Ability Write Documents (.AWW files).
.AWS File Extension AutoCAD Work Space File Settings Autodesk XML XML settings file used by AutoCAD, a 3D design and Documentation application; stores the visibility and location of user interface elements, such as tool palettes; used for customizing and personalizing the AutoCAD workspace.
.AWW File Extension Ability Write Document Text Ability Plus Software Binary Document created by Ability Write, the word processor included with the Ability Office productivity suite; similar to a Microsoft Word Document and supports text, images, and advanced page formatting.
.AFP File Extension Advanced Function Presentation File Page Layout N/A Unknown Data format used for transactional printing purposes; formatted using an object-oriented page description Language (PDL) called the Mixed Object Document Content Architecture, also known as the AFP Data Stream (AFPDS).
.ABK File Extension Automatic Backup File Backup N/A Binary Backup file created by various programs, including CorelDRAW, Ability Office Write, and PrintMaster Gold; contains a Backup of the a currently opened Document or project; used to recover program data in the event of a computer crash or file corruption.
.AST File Extension Adobe Color Separations Table Settings Adobe Systems Unknown Contains color separation options that can be loaded by several Adobe programs; may be used for defining color separations for printing, exporting to PDF, or exporting to another program; can be used for images using RGB, CMYK, and other color modes.
.AP File Extension Active Page Web Fifth Generation Systems Unknown Active Web page that contains HTML as well as JavaScript, .FGL code, or code written in another scripting Language; requires supporting software on the Web Server to run; can be used to generate dynamic Web pages.
.ANH File Extension Project ROME File Page Layout Adobe Systems Unknown File created by Project ROME, an all-in-one content creating and Publishing Application; contains a project, which consists of a Document for print or screen; may contain text, images, media, and graphics inserted by the user; includes templates for brochures, websites, business cards, flyers, certificates, and presentations.
.AFDESIGN File Extension Affinity Design Document Vector Image Serif Labs Unknown Design Document created by Affinity Designer, a Vector Graphics design application; may contain multiple image layers, Shapes, text, pencil or pen Drawings, paint strokes, and other Affinity Designer elements.
.AWD File Extension Microsoft Fax Document Raster Image Microsoft Binary Fax image, also called an "At Work Document," created by Microsoft Fax software; stores the content of a received fax, including the text and page structure information; can be converted to a .TIF file by executing the program awdvstub.exe, which is located in the i386win9xmigfax directory on the Windows XP/2000 installer CD.
.ASK File Extension askSam Database Database askSam Systems Binary File created by askSam, a program used for organizing digital information; stores a searchable Database of webpages, email messages, .PDF files, and text Documents; used by researchers and business professionals.
.ASR File Extension ActionScript Remote Document Web Adobe Systems Unknown Server-side ActionScript file created with Adobe Dreamweaver or Contribute; uses the same Language and syntax as a standard ActionScript (.AS) file, but can access access built-in Server-based features in ColdFusion; the "Default.asr" file installed with Dreamweaver and Contribute is located in the NewDocuments folder.
.AHI File Extension Dynamics AX Online Help Index File Misc Microsoft Unknown Index of help data (.AHD) files used by Microsoft Dynamics AX, a business management program; provides faster access to help Documentation and search capabilities for Dynamics AX online help.
.ANS File Extension ANSI Text File Text N/A Text Text Document graphic based on the ANSI text standard; may also be used to store text graphics, which uses characters to display images in a text Document.
.ANS File Extension ANSI Text File Text N/A Text Text Document graphic based on the ANSI text standard; may also be used to store text graphics, which uses characters to display images in a text Document.
.ACTION File Extension Automator Action Executable Apple Unknown Action used by Automator, a program for creating automations in Mac OS X; contains a specific action that can be combined with other actions to create an automated process; these processes are saved as .WORKFLOW Documents.
.ADOC File Extension AsciiDoc File Text N/A Text Text Document that contains Plain Text; may include special syntax, such as square brackets, periods, and colons that allow the file to be displayed with custom formatting; may also be converted to a different format, such as .HTML or .EPUB, using a text processor like Asciidoctor.
.ALI File Extension Dynamics AX Label Index File Data Microsoft Unknown Index of label (.ALD) files used by Microsoft Dynamics AX business management software; contains all label values, arranged by Language.
.ADD File Extension Dynamics AX Developer Documentation File Misc Microsoft Unknown Application developer Documentation data file used by Microsoft Dynamics AX, a business management application; contains development help Documentation for using the program; arranged by Language.
.AUTOMATICDESTINATIONS-MS File Extension Windows Jump List File System Microsoft Binary "Jump List" file type introduced with Windows 7; contains a shortcut to a recently opened item; may be a recently accessed Document for a word processor, an image file for an image editor, or another recently used item; can be accessed from the Recent section of pinned applications on the taskbar (right-click pinned items and browse the Recent section).
.APT File Extension Almost Plain Text File Text N/A Text Text Document written in Almost Plain Text (APT), a simple markup Language that describes the formatting of a text Document; can be converted to HTML, PDF, PostScript, RTF, or other formats using a Document generation program such as Aptconvert, which is often used with Maven software development tools.
.ANN File Extension Lingvo Dictionary Annotation File Data ABBYY Unknown File used by Lingvo Dictionary software, which is used to lookup definitions and to Translate words into different Languages; contains metadata for DSL dictionaries; includes information, such as the dictionary subject, author, and date it was created.
.AB2 File Extension Print Shop Address Book File Data Broderbund Binary Address book file used by Print Shop, a program that allows users to format and print cards, banners, Calendars, brochures, and labels; contains a collection of addresses for organizations and people; used with a Document template to print a personally addressed copy for each entry in the address book.
.AWT File Extension AbiWord Template Text AbiSource Binary Document template created by AbiWord, a free word processing program; stores preset Page Layout and style settings for a Document; enables users to author multiple .ABW Documents with the same formatting.
.AWP File Extension Ability Write Template Text Ability Plus Software Binary Document template created by Ability Write, the word processing application included with the Ability Office suite; used for creating Ability Write Documents (.AWW files) with the same styles and page formatting; useful for company letterheads and memo templates.
.ADOX File Extension ActivDox Document Data ActivDox Binary Document used by ActivDox, a mobile Document management solution for tablets and workstations; saves an interactive Document and supports active content as well as version control; downloaded from an ActivDox Server and can link back to the originating Server for providing additional content and functionality.
.CST File Extension Manga Studio Story File Page Layout Smith Micro Unknown Page layout file created by Manga Studio, a program used for creating comic books; saves the storyline for the comic book and can include multiple chapters, multiple pages (.CPG files) per chapter, and layouts for each page; used for specifying the structure of the comic book.
.CDF File Extension Computable Document Format File Page Layout Wolfram Research Binary Interactive Document created in the Computable Document Format (CDF), a Document standard developed by Wolfram Research; may contain interactive graphs and other visual materials in addition to static text and page formatting; can load visualization data on-demand from within the Document file.
.CLP File Extension CrazyTalk Clip File Data Reallusion Binary Motion clip created by CrazyTalk, a facial Animation program used for synchronizing speech audio with facial movements; saves a short clip of a facial expression recorded in real-time; used for inserting pre-recorded facial movements in the Animation timeline.
.CLP File Extension CrazyTalk Clip File Data Reallusion Binary Motion clip created by CrazyTalk, a facial Animation program used for synchronizing speech audio with facial movements; saves a short clip of a facial expression recorded in real-time; used for inserting pre-recorded facial movements in the Animation timeline.
.CDMM File Extension ConceptDraw MINDMAP Document Vector Image Computer Systems Odessa Binary Document created by ConceptDraw MINDMAP, a visual mind mapping application; contains a diagram with objects, connecting lines, symbols, and appearance settings; used for storing captured ideas during the brainstorming process.
.CLS File Extension LaTeX Document Class File Misc N/A Text File written in LaTeX, a Document markup Language often used for typesetting academic papers; stores a class with a predefined typeset configuration that can be imported into a .TEX Document; used for storing templates for articles, forms, and other types of Documents.
.CDDZ File Extension ConceptDraw PRO Document Vector Image Computer Systems Odessa Binary Document created by ConceptDraw PRO, an application used to create business Drawings; contains a drawing, such as a conceptual diagram or flowchart, along with any Shapes, charts, diagrams, and people that have been inserted by the user.
.CHM File Extension Compiled HTML Help File Web Microsoft Binary Help Documentation compiled and saved in a compressed HTML format; may include text, images, and hyperlinks; viewable in a Web browser; used by Windows and other programs as an online help solution.
.COMICLIFE File Extension Comic Life Document Page Layout plasq Binary Document created by Comic Life 3, an application that enables user to create comic books, picture albums, and other visual Documents; stores one or more pages with custom layouts, which include text and images; allows users to close and continue working on it at later time.
.CPY File Extension 3ds Max Copy Track File 3D Image Autodesk Unknown Animation file created by 3ds Max, a 3D Modeling and Animation program; saves an Animation track for selected objects from a biped (two-footed figure); includes the gestures and posture information; allows modelers to reuse biped poses and Animations.
.CALCA File Extension Calca Document Text Krueger Systems Text Document created and used by Calca, a symbolic editor that calculates math problems in real time; contains Plain Text, which includes mathematical equations with variables, functions, and matrices.
.CLX File Extension Standard Dictionary File Data Adobe Systems Binary Dictionary file used by various software products, including Adobe Acrobat, Adobe Illustrator, Adobe InDesign, and Nemetschek VectorWorks; contains a word list used by the spell checker; used for spell checking Documents against standard dictionary words.
.CDMT File Extension ConceptDraw MINDMAP Template Vector Image Computer Systems Odessa Binary Mind map template created by ConceptDraw MINDMAP, a program used for visual mind mapping; stores a preset diagram from which users can author new .CDMM Documents; may be a diagram included with a software or one created by the user.
.CDMTZ File Extension Compressed ConceptDraw MINDMAP Template Vector Image Computer Systems Odessa Zip Compressed Document template created by ConcepDraw MINDMAP, a visual mind mapping application; stores a compressed .CDMT file using Zip compression; used for reducing the size of template files.
.CDMZ File Extension Compressed ConceptDraw MINDMAP Document Vector Image Computer Systems Odessa Zip Compressed Document created by ConceptDraw MINDMAP, a program used to capture ideas with mind maps; stores a compressed .CDMM Document using Zip compression; reduces the size of a mind map diagram file, which is more suitable for transfer via email.
.CAJ File Extension Chinese Academic Journal File Page Layout China National Knowledge Infrastructure Unknown Document format developed by China National Knowledge Infrastructure (CNKI) and used for storing Chinese Academic Journal articles; contains text from a published article, which includes authors, citations, annotations, and other data related to the article.
.CDPZ File Extension ConceptDraw PROJECT Document Data CS Odessa Binary Project Document created by ConceptDraw PROJECT, an application used for project management; stores data for project schedules, resources, and tracking; often used for generating project "dashboards," which summarize key performance indicators.
.CNDX File Extension Avery DesignPro for Mac Label File Page Layout Avery Unknown Document created by Avery DesignPro for Mac, a program used for making labels, business cards, greeting cards, and other Page Layout designs; can include text, clip art, various gradients and Shapes, as well as other design elements.
.CRTR File Extension MultiAd Creator Pro Document Page Layout MultiAd Binary Marketing Document created by Creator Pro, a program used for designing business marketing materials; saves the Page Layout information, graphics, text, and other Document data; used for printing flyers and other promotional materials.
.CCB File Extension CopperCube 3D Scene 3D Image Ambiera Unknown 3D Document created by CopperCube, a 3D app, Game, and website editor; contains a 3D scene, which includes scene settings, meshes, scene metrics, viewpoints, and links to files like .JPG and .PNG graphics that are referenced to make up the 3D objects in the scene.
.COMPOSITIONTEMPLATE File Extension Invantive Composition Template Page Layout Invantive Software Unknown Template used by Composition, a module that can be added to Microsoft Word to combine Word Documents with data from Databases and other programs; contains information that defines the layout of the Document and the placement of data from the Composition data model file (.COMPOSITIONMODEL).
.CLARIFY File Extension Clarify Document Vector Image Blue Mango Learning Systems Binary Document created by Clarify, a program used for creating and annotating screen shots; saves captured images as well as text, Shapes, and other visual annotations; used for making tutorials and illustrations and can be shared via email or Dropbox.
.CTXT File Extension BlueJ Context File Developer University of Kent Text File created by BlueJ, a Java Language development environment; automatically generated by BlueJ during compilation; contains extra information for a class such as the comments structure and Documentation for methods in the code; only one CTXT file can accompany each class.
.CZD File Extension CAD Zone Drawing CAD The CAD Zone Binary CAD Document created by The Crash Zone or another CAD Zone software product; saves a 3D Model of an accident scene, crime scene, or other emergency situation; used for making crash and other emergency diagrams that evaluate and influence road, site, and building construction.
.CNM File Extension NoteMap Outline File Text LexisNexis Binary File created by LexisNexis NoteMap Outline, a program used for making outlines; stores a text Document using an outline structure; includes indented topics, subpoints, and other Notes; often used in legal environments for case Analysis and assessment.
.CM10 File Extension CaseMap 10 Case File Data LexisNexis Binary File created by CaseMap 10, a fact and issue management program used by law firms; saves case information about people, facts, issues, and timelines; can also include Document and image attachments to associate facts with Documentation.
.CDDX File Extension Circuit Diagram Document CAD Circuit Diagram Binary CAD file created by Circuit Diagram, a free circuit design application for Windows; contains layout information for a circuit and includes connection information and components used in the circuit; can be exported to .PNG or .SVG formats and used within presentations or technical Documents.
.CYS File Extension Cytoscape Session File Data Cytoscape Binary File created by Cytoscape, an open source network analaysis and visualization application; saves an application session, which includes the state of the network visualization and its supporting data; used in social science, biology, and other research settings for creating and analyzing complex large-scale visualizations.
.CBU File Extension Comodo Backup File Backup Comodo Group Binary Backup file created by Comodo Backup, a program used for both local and remote online storage Backups; may store system files or user files such as mail accounts, digital photos, Documents, and IM conversations; used as the native Comodo Backup format and can be used for restoring lost system or personal files.
.CPD File Extension RoboHelp Cache Project Database Database Adobe Systems Binary Database file created by RoboHelp, a program used for authoring Windows help Documentation; stored as part of a RoboHelp project (.XPJ) and contains cached information for the project; should not be opened or edited manually.
.CDW File Extension KOMPAS Document CAD ASCON Binary CAD Document created by KOMPAS-3D, a program used for modeling parts and assemblies; can be used for generating design Documentation, technical illustrations, and for exporting model geometry for manufacturing.
.CWS File Extension Claris Works Template Text Apple Binary Template for a Claris Works Document, such as a word processing, drawing, or spreadsheet file.
.CSD File Extension Steam Game Backup File Backup Valve Unknown Backup file used by Steam, a gaming service that allows users to download and manage Valve Games; contains Backup Game data; similar to a .SIS file.
.CAN File Extension Canon Navigator Fax Document Raster Image Canon Unknown Fax Document saved from a Canon fax machine or all-in-one printer/copier/scanner/fax device; may be generated by Canon Navigator, the software included with Canon fax machines.
.CVI File Extension CassiniVision Map Image File GIS CassiniVision Unknown Map image format used by CassiniVision, a French image viewing program; commonly used for storing historical maps, such as those from the BnF (Bibliotheque nationale de France) Gallica digital library.
.COD File Extension Atlantis Word Processor Encrypted Document Text Rising Sun Solutions Binary Encrypted Document created by Atlantis Word Processor, a word processing program for Windows; encrypted using a 256-bit encryption key; used to protect sensitive written information; may be decrypted with the password that the user supplied when encrypting the Document.
.CYI File Extension Clustify Input File Text Hot Neuron Unknown Text-based input file used by Clustify, a Document organization program; specifies a list of Documents to cluster (which identifies and arranges similar Documents).
.CPC File Extension CPC Compressed Image File Raster Image Cartesian Products Unknown Bitmap image compressed using the Cartesian Perceptual Compression (CPC) algorithm; designed for compressing 1-bit raster images, such as black-and-white photographs and line art; often used for compressing monochrome design layouts, legal Documents, and other types of scanned text files.
.CYO File Extension Clustify Output File Data Hot Neuron Unknown Output file generated by Clustify, a Document organization program, after identifying and arranging similar Documents; specifies Cluster ID numbers for all Documents that were input.
.COMICDOC File Extension Comic Life Document Page Layout plasq Unknown Comic book or picture album created with Comic Life; used for creating comic books, storyboards, comic strips, photo layouts, and other visual Documents; may be created from a template or from scratch; can include images, photos, and bendable comic lettering text.
.CPH File Extension Corel Print House File Page Layout Corel Unknown Printing project created with Corel Print House, a desktop publishing program; used for designing scrapbooks, greeting cards, banners, Calendars, invitations, and printable Documents.
.CNT File Extension Help Contents File System Microsoft Text Help file used by Windows and Windows applications; stores topics for a Help Document (.HLP file) in a Plain Text format; commonly installed with an application that uses Microsoft Help as the help Documentation format.
.CRTX File Extension Office 2007 Chart Template File Data Microsoft Binary Chart template that can be applied to multiple Documents and presentations in Microsoft Office 2007 or later; contains stored settings for colors, axes, grid lines, categories, legends, text, title, and other chart options; used to apply the same styles and formatting to multiple charts.
.CPHD File Extension CloudChan Pre-processed Hypertext Document Web CloudChan Text Hypertext Document created for the CloudChan pre-processor engine; contains HTML and scripts that use syntax similar to Java; can be used to create dynamic web pages and Documents.
.CAG File Extension ClipArt Gallery Package Vector Image Microsoft Binary Compressed clip art package created by Microsoft Clip Gallery, a program used to manage clip art images; contains categories, descriptions, thumbnail images, and the clip art graphics; used as a Database for browsing clip art and importing images into Documents.
.COMPOSITIONMODEL File Extension Invantive Composition Data Model File Data Invantive Software Unknown Model file used by Composition, an add-in to Microsoft Word combines Word Documents with data from Databases and other programs; contains information that defines the source of the data used in an Invantive Composition template (.COMPOSITIONTEMPLATE).
.CCX File Extension Click & Create Extension Plugin Clickteam Binary File used by Clickteam Multimedia Fusion and The Games Factory (Game development software); contains extra components that can be used for developing Games, such as artificial intelligence patching algorithms or reusable Game objects; enables developers to incorporate custom Game components.
.CL2DOC File Extension Comic Life 2 Document Page Layout plasq Binary Document created by Comic Life 2, a program used for making comic books, picture albums, and other visual Documents; can include multiple pages, each with its own custom layout, graphics, and text; can be exported to .CBZ, .EPUB, HTML, and .PDF formats when complete.
.CZP File Extension ClozePro Archive Data Crick Software Binary File used by Cloze Pro, a program used for preparing standardized tests and other Documents for student assessment; stores a content package that can be imported into the software.
.CVW File Extension CaseView Document Page Layout CaseWare Binary Document created by CaseView, a program used for making business financial Documents; saves the Document layout and fields that can be filled by a connecting data source; can be created in Design mode or Form mode in the software.
.CL2TPL File Extension Comic Life 2 Template Page Layout plasq Binary Comic book template used by Comic Life 2, a program used for making comics and other visual Documents; saves a template that is used for making Comic Life 2 Documents (.CL2DOC files); may be a template included with the software or created by the user.
.CADC File Extension Corpatla Data Container File Data Corpatla Binary File used by Corpatla software products including Datenexplorer (DX) and Metabase Editor; used as a container format for exchanging and saving various Document types; supports compression and encryption.
.CL2LYT File Extension Comic Life 2 Layout File Page Layout plasq Text File used by Comic Life 2, a comic book authoring application; stores the panel layout structure for a Document page; allows comic book pages to have the boxes that separate dialogue and scenes in the story progression.
.CUS File Extension AutoCAD Custom Dictionary File Settings Autodesk Text Dictionary file used by AutoCAD, a CAD application used for architectural design and Documentation; contains a list of words separated by line breaks in a Plain Text format; allows users to store a list of spelling exceptions so that the AutoCAD spell checker does not report errors for certain words; commonly contains company names or business acronyms.
.CRASHED File Extension AbiWord Crash-Saved Document Misc AbiSource Unknown Auto-saved Document created by AbiWord, a free, open source word processor; saves a copy of the opened Document before the program crashed; used for rescuing unsaved Document edits.
.CMS File Extension Content Management System Web N/A Unknown Web page published via a content management system (CMS), an automated system used for publishing Documents to the Web; often based on the same template as other pages and is generated dynamically on the Web Server.
.DOCX File Extension Microsoft Word Open XML Document Text Microsoft Zip Document created by Microsoft Word word processing software; may contain text, images, formatting, styles, drawn objects, and other Document elements; used for authoring business, academic, and personal Documents; is one of the most popular word processing Document formats.
.DXF File Extension Drawing Exchange Format File CAD Autodesk Text Data format developed by Autodesk and used for CAD (computer-aided design) vector image files, such as AutoCAD Documents; similar to the .DWG format, but is more compatible with other programs since it is ASCII (text) based.
.DTD File Extension Document Type Definition File Developer N/A Text Text File that specifies elements and attributes used in an XML, SGML, HTML, or XHTML Document; can also define the ordering and nesting for elements and their attributes; commonly referenced within Web pages using a URL.
.DOC File Extension Microsoft Word Document Text Microsoft Binary Word processing Document created by Microsoft Word, a word processor included with all versions of Microsoft Office; may contain formatted text, images, tables, graphs, charts, page formatting, and print settings.
.DOC File Extension Microsoft Word Document Text Microsoft Binary Word processing Document created by Microsoft Word, a word processor included with all versions of Microsoft Office; may contain formatted text, images, tables, graphs, charts, page formatting, and print settings.
.DTX File Extension Documented LaTeX File Page Layout N/A Text LaTeX package file created in the DOCTex format; includes both source and Documentation in the same file, meaning that both the user manual (the Documentation) and the LaTeX component to be installed (e.g., a new style or class) are present in the file; used for distributing LaTeX packages.
.DOTX File Extension Word Open XML Document Template Text Microsoft Zip Template file created by Microsoft Word, a word processing program; contains default layouts and settings for a Document, including styles, AutoText, toolbars, and macros; used as a baseline to create multiple .DOCX Documents with the same formatting.
.DOT File Extension Word Document Template Page Layout Microsoft Binary Template created by Microsoft Word, a word processing application; contains pre-formatted Document settings, such as headers, footers, margins, font sizes, and other common page styles; used to create multiple Documents that have similar formatting, such as company letterheads, business memos, or envelopes.
.DSB File Extension DAZ Studio Binary Script 3D Image DAZ Productions Binary Script created by DAZ Studio, a 3D character modeling application; contains instructions that automate tasks in the software, such as applying presets (pose, character, shader, materials, lights, cameras, etc.); similar to a .DS file, but saved in a binary format instead of human readable text; may incorporate encryption if created with DAZ Studio versions 1 and 2.
.DBX File Extension Outlook Express E-mail Folder Misc Microsoft Binary Folder created by Outlook Express, a Microsoft email program; contains email messages for a specific mailbox; typically saved within the "Documents and Settings" user directory; may be copied to another folder in order to Backup e-mail messages.
.DCST File Extension Adobe InDesign Document Presets File Settings Adobe Systems Binary Settings File used by Adobe InDesign, an application used for publishing Documents to digital and print media; contains presets for a new Document, such as margin widths and other Page Layout information; used for authoring Documents that have the same template.
.DCPR File Extension Adobe DNG Camera Profile Recipe File Data Adobe Systems Binary Document created by DNG Profile Editor, a free Adobe application used to create .DCP digital camera profiles; stores color tables, tone curve, and color matrices used to render RAW images; used for saving, loading, and editing the properties of a camera profile.
.DC2 File Extension DesignCAD 2D ASCII Drawing CAD IMSI/Design Text 2D Drawing created by DesignCAD, a CAD design and drafting application; encodes the drawing in ASCII text and includes all drawn elements; used as a Plain Text alternative to the .DCD drawing format.
.DMC File Extension Datamartist Data Canvas File Data nModal Solutions Binary Document file created Datamartist, a data profiling tool used to analyze, combine, and manage data from multiple sources; can contain internal data sets as well as data transformation specifications in the form of transform blocks and connections between them.
.DXP File Extension CDBurnerXP Data Compilation File Disk Image Canneverbe XML Data disc compilation file created by CDBurnerXP, a program used to burn data and music discs; contains a list of files and directories to burn, as well as the file sizes and the target directory structure; saved in an XML Format">XML Format.
.DPB File Extension DataPilot Backup File Backup Susteen Binary File created by DataPilot, a program used for transferring cell phone data to the computer; may store Contacts, text messages, pictures, videos, and other mobile phone data; used for syncing a phone with the computer; can be password protected.
.DWDOC File Extension DrawWell Document Page Layout DrawWell Technologies Binary Design or illustration created by DrawWell or WorkWell drawing and Document creation tools; can be used for saving presentations, reports, and many other types of Document designs; supports vector objects and multiple editing layers.
.DITA File Extension DITA Document Data OASIS XML XML file created in the Darwin Information Typing Architecture (DITA) format, which is used for authoring and publishing technical Documents; contains topics of information in the form of Tasks (how-to data), Concepts (definitions), and References (facts and citations).
.DITAVAL File Extension DITA Conditions File Data International Standards Organization Text File used for filtering the data in XML .DITA technical Documents; stores conditional rules for including or excluding certain types of topics in the DITA Document; allows DITA readers to filter DITA topics.
.DXL File Extension Domino XML Language File Database IBM XML XML Database file created for Lotus Domino, an enterprise level business collaboration software; may store data from a Lotus Domino Database as well as schemas, design elements, views, forms, and Documents; provides an export and interchange format for the Database.
.DCB File Extension Concordance Database File Database LexisNexis Unknown Database file created by Concordance, a litigation Document management program; saves the Database structure but does not save the actual data records; acts as the Database "project file" because the Database loads when it is opened.
.DPD File Extension Ovation Pro File Page Layout David Pilling Unknown Document created by Ovation Pro, a desktop publishing program for Windows created by David Pilling; includes features such as auto paragraph numbering and bulleting, referenced and proxy pictures, and .EPS file support.
.DOX File Extension Visual Basic Binary UserDocument Developer N/A Unknown ActiveX program file saved during the development of an ActiveX project in binary format; similar to a .DOB file, but contains graphics and other data that cannot be saved in a text format.
.DOX File Extension Visual Basic Binary UserDocument Developer N/A Unknown ActiveX program file saved during the development of an ActiveX project in binary format; similar to a .DOB file, but contains graphics and other data that cannot be saved in a text format.
.DOCM File Extension Word Open XML Macro-Enabled Document Text Microsoft Zip File created by Microsoft Word, a program used for word processing; contains embedded macros that can be executed within the Document; used to automate Word Open XML Document (.DOCX) tasks by adding advanced macro functionality.
.DOTM File Extension Word Open XML Macro-Enabled Document Template Text Microsoft Zip Document template created by Microsoft Word, a word processing program; contains the default layout, settings, and macros for a Document; used to create a new .DOCM Document with embedded macros.
.DISCO File Extension DISCO Discovery Document Web Microsoft XML Information file published by DISCO, a Microsoft application for publishing and discovering Web Services; formatted in XML and contains links to other discovery Documents, XSD schemas, and service descriptions.
.DXB File Extension Drawing Exchange Binary Vector Image Autodesk Binary Vector image format used by Autodesk AutoCAD; stores 3D CAD Drawings created by AutoCAD, such as building and landscape designs.
.DFT File Extension Solid Edge Draft Document CAD N/A Unknown CAD draft Document created by Solid Edge 3D CAD manufacturing software
.DFX File Extension Drafix CAD File CAD Autodesk Unknown 3D CAD Document created with Drafix QuickCAD or Drafix Professional CAD; contains 3D objects and symbols used for creating home layouts and other designs.
.DTP File Extension Publish-iT Document Page Layout Poster Unknown Page layout file created with Publish-iT desktop publishing (DTP) software; may include text, images, special page formatting, and multiple pages; often used for creating newsletters, brochures, or other types of printable Documents.
.DPP File Extension DrawPlus Drawing File Vector Image Serif Binary Vector image saved in the native DrawPlus drawing format; supports CMYK color, 3D Shapes, filter effects, text in a shape, and image feathering; DPP Documents created with DrawPlus 7 or later may also include multiple pages.
.DIC File Extension Dictionary File Misc N/A Unknown Dictionary of words that can be referenced by word processors and other software programs; often used for spell-checking Documents and providing correct spelling alternatives for misspelled words.
.DOCSET File Extension Doxygen Document Set File Developer Doxygen Binary Developer File created by Doxygen, a source code Documentation system; contains an archive of Documentation about a body of source code, which can encompass many different individual source code files and code constructs; used as the storage format for publishing Documentation to developers that use the source code.
.DGS File Extension Dagesh Pro Document Text TES Unknown Word processing Document created with Dagesh Pro, a Hebrew-English word processor; supports over 200 Hebrew True-Type fonts and spellcheck for 7 Languages; may include formatted text, wrap around graphics, background graphics, tables, and many other objects.
.DJV File Extension DjVu Image Raster Image LizardTech Binary Image created in the DjVu compressed format, which is designed to help scan and distribute print Documents on the Internet; contains a high-resolution scanned image; used to publish books, magazines, and other Documents on the Web.
.DED File Extension Dr. Engrave Document Vector Image Roland Binary Document created by Dr. Engrave, a program used to design engravings for nametags, nameplates, and awards; contains text and graphics as well as the target layout dimensions; supports raster and Vector Graphics as well as Windows True Type fonts; can be engraved using a compatible Roland engraving device.
.DC1 File Extension DevCad Document CAD DevCad Binary CAD file created by DevCad, a Windows CAD application; saves a 2D Drawing for a construction or engineering design; used as the native format for saving CAD Documents.
.DICPROOF File Extension Microsoft Dictionary Proofing File Settings Microsoft Binary File used by Microsoft programs to proof-read authored Documents; contains a collection of pre-fabricated and user-defined keywords and phrases; commonly found with the filename custom.dicproof.
.DOCZ File Extension ThinkFree Online Note Document Text Hancom Unknown Online Document created by ThinkFree Online, a Web-based application used for creating Documents, presentations, and spreadsheets; stores a "note," which saves the layout, text, and graphics for a memo, letter, agenda, or other informational Document.
.DOCXML File Extension Microsoft Word XML Document Text Microsoft XML Document created by Microsoft Word professional word processing software; stores the Document in a raw XML Format">XML Format, but differs from the .DOCX format which saves Open XML Word Documents as Zip archives.
.DOTHTML File Extension Microsoft Word HTML Document Template Web Microsoft Unknown HTML version of a .DOT file created with Microsoft Word, a word processing application; contains HTML source code that can be used to display the Document with similar formatting to the original DOT file; used for viewing published templates in a Web browser.
.DOCMHTML File Extension Microsoft Word MIME HTML Document Web Microsoft Binary Archived MIME HTML Document saved by earlier versions of Microsoft Word, a word processing application; contains HTML source code that represents the Document in a format similar to the original .DOC or .DOCX file; used for viewing published versions of Documents in a Web browser.
.DOCHTML File Extension Microsoft Word HTML Document Web Microsoft Unknown HTML version of a Document created with Microsoft Word, a word processing productivity application; contains HTML source code that displays the Document in a format similar to the original .DOC or .DOCX file; used for publishing and viewing Document contents in a Web browser.
.DCA File Extension DisplayWrite Document Text IBM Binary Text Document created by DisplayWrite, an old word processor for IBM PCs that has been discontinued; saves Document text and basic formatting; can be converted to more recent word processing formats using WordPort.
.EPS File Extension Encapsulated PostScript File Vector Image Adobe Systems Binary PostScript (.PS) file that may contain 2D Vector Graphics, Bitmap Images">Bitmap Images, and text; may also include an embedded preview image in Bitmap Format">Bitmap Format; can be placed within another PostScript Document.
.EFX File Extension eFax Document Data j2 Global Communications Unknown Document created by eFax, a service that sends and receives faxes as Document attachments via email; contains email attachment and email body text; can be converted into .PDF or .TIF files using eFax Messenger.
.EIO File Extension Yozo Office File Text Yozosoft Unknown File created by Evermore Integrated Office, an office suite similar to Microsoft Office; contains Document formatting features such as text alignment, font settings, image insertion, and organization charts; holds a text Document, worksheet, presentation, or blank binder; similar to a .DOCX, .PPTX, or .XLSX file.
.EDRWX File Extension XPS Drawing Document Page Layout Microsoft Binary Document created in the .XPS format; usually contains a CAD drawing, such as an .EDRW file, that has been exported into the XML Paper Specification (XPS) format from a CAD program; can be viewed with any XPS file viewer.
.EPSF File Extension Encapsulated PostScript Format File Vector Image Adobe Systems Binary File created in the Encapsulated PostScript Format (EPSF); contains text, images, and Drawings as well as page formatting properties; can be imported into another PostScript (.PS) Document; used to create final form Documents.
.EMC File Extension Striata Reader Encrypted Document Encoded Striata Binary File used by Striata Reader, a program that allows users to view Documents that are encrypted by Striata software; contains an encrypted Document such as a bill, letter, invoice, or a collection notice; commonly used by banks and credit card companies for sending high-volume, system generated statements to customers; also used by businesses for eBilling.
.ENX File Extension Max PC Safe Encrypted File Encoded Max Secure Software Binary Encrypted file created by Max PC Safe, a file encryption and decryption software program; contains the exact same data as the source file but is encrypted in order to protect its contents from being seen by others.
.EP File Extension Pencil Document Vector Image Evolus XML Document created by Pencil, an open source GUI prototyping tool; saves a page with different design elements for a targeted user interface; used for making software mockups for mobile (iOS, Android, etc.), Web, and desktop platforms.
.ENT File Extension External Entity Developer N/A Text Text File containing parameters and entity declarations for a specific set of tags defined in a DTD; often referenced by XML and SGML Documents.
.EMLXPART File Extension Mail Message Attachment Data N/A Unknown Attachment such as an image or other Document attached to a mail message (.emlx file) saved using Mac OS X Mail; may also contain the HTML version of a message; does not contain the message metadata, which is included in the .emlx file
.EXD File Extension Control Information Cache File Misc Microsoft Binary Stores cached information about a control that has been inserted into an Microsoft Office Document; allows additional controls to be added in less time; in Microsoft Office 2000, the EXD files are stored in the following folders: Excel8.0 Ppt9.0 Word8.0 Vbe EXD files are created when a user inserts an ActiveX control into a Document using the Control Toolbox in a Microsoft Office program. They are also created when any type of control is inserted into a custom UserForm in the Microsoft Visual Basic Editor.
.EFTX File Extension Office 2007 Theme Effect File Settings Microsoft Zip Theme effect that can be applied to presentations and Documents in Microsoft Office 2007 or later; contains effects that may be applied to charts, SmartArt graphics, tables, pictures, Shapes, WordArt, and text; includes effects for lines, fills, and special effects, such as 3D and shadow effects.
.ETX File Extension TeX Font Encoding File Font N/A Text Font File used by TeX and LaTeX typesetting systems; saved in a Plain Text format and contains markup that describes how a font is encoded for its appearance; allows font customization for TeX Documents.
.EXC File Extension eDataSecurity Management Self-extracting File Encoded Acer Unknown Self-extracting file created by eDataSecurity Management, a program used to encrypt private Documents; contains the exact same data as the source file but is encrypted in order to protect its contents; similar to the .ENX file.
.EXB File Extension CAXA Draft CAD CAXA Unknown Document created by CAXA, a 3D CAD modeling system; contains 2D Drawing views of existing 3D parts/assemblies.
.EOT File Extension Embedded OpenType Font Font N/A Unknown OpenType (.OTF) font embedded in a Document such as a Web page or PowerPoint presentation (.PPS file); often embedded with Microsoft Web Embedding Fonts Tool (WEFT); saved along with the associated Document and not meant to be opened manually.
.EIT File Extension Yozo Office Template File Text Yozosoft Unknown Template created by Evermore Integrated Office, an office Document creator suite; contains a template with customized settings for its specific theme; different template themes include default, presentation, spreadsheet or wordprocessor template; similar to .ECT files.
.ECT File Extension Yozo Office Chart Template File Data Yozosoft Unknown Template created by Evermore Integrated Office, an office Document creator suite; contains a chart template with customized settings, such as chart colors, data, and graph type; similar to .EIT files.
.E4A File Extension Encrypt4all Archive Encoded Encrypt4all Unknown Encrypted archive created with Encrypt4all, a Document encryption program; may contain one or more files and folders; password-protected and can only be opened if the correct password is provided.
.EAS File Extension RSLogix Symbol File Data Rockwell Automation Text ASCII-delimited file used by RSLogix, an IEC-1131-compliant application used to create programmable controller Documentation; contains the address symbols and descriptions for a Documentation Database; used to reference and lookup common symbols in Documents.
.EVY File Extension Envoy File Data Corel Binary Document created by Corel Envoy, an older word processing program; used as an early competing format to the Portable Document Format (.PDF files) and similar to a PDF file; rarely used anymore since support for the Envoy format has been discontinued.
.FBR File Extension FlashBack Screen Recording Video Blueberry Binary Video created with BB FlashBack screen recording software; captures the events on the screen and can be combined with text sound and images added by the user; typically used for creating software demos, tutorials, training materials.
.FCDT File Extension FormsCentral Design Template Page Layout Adobe Systems Binary Document template created by Adobe FormsCentral, a desktop and Web browser application used for creating fillable online forms; used for storing various templates, such as registration forms, admissions applications, customer surveys, and contact forms.
.FM File Extension FrameMaker Document Page Layout Adobe Systems Unknown Publishing or page authoring Document created with Adobe FrameMaker; uses XML for creating the Document structure; Framemaker can be used to publish Documents for print or the Web; it is only available on Windows and Unix platforms.
.FETCHMIRROR File Extension Fetch Mirror Document Settings Fetch Softworks Unknown Mirror download Document created by Fetch, an FTP client for OS X; stores settings from a Mirror window such as local and remote paths, hosts, and users; also includes whether to delete stray items at destination.
.FDX File Extension Final Draft Document Text Final Draft XML Document created by Final Draft, a program used for writing Movie scripts, television episodes, and stage plays; contains Document text, page formatting, and script Notes; stored in an XML Format">XML Format for portability.
.FCF File Extension Final Draft Converter File Text Final Draft Text Document exported by Final Draft, a screenwriting application used for authoring Movie, TV, and screen play scripts; saves the Document in a Plain Text format with a simple markup Language; often used as an interchange format with other screenwriting tools.
.FDXT File Extension Final Draft 8 Template Text Final Draft Text Document template created by Final Draft, a program used for authoring TV, Movie, and stage play scripts; saves the layout and formatting information for a script; enables writers to author multiple .FDX Documents using the same base formatting.
.FDT File Extension Final Draft 5-7 Template Text Final Draft Binary Template created by Final Draft, an application used for authoring Movie, television, and stage play scripts; saves the default Document text and formatting for creating a new .FDX Final Draft Document; allows multiple scripts to adopt the same structure.
.FDT File Extension Final Draft 5-7 Template Text Final Draft Binary Template created by Final Draft, an application used for authoring Movie, television, and stage play scripts; saves the default Document text and formatting for creating a new .FDX Final Draft Document; allows multiple scripts to adopt the same structure.
.FMP File Extension 123 Flash Menu Project Web Dreamingsoft Unknown Drop-down menu created with 123 Flash Menu, a Flash-based Web menu creation program; includes the menu style, fonts, colors, dimensions, sounds, Animations, etc; can be exported as a standard Flash (.SWF) file that can be inserted into a Web page.
.FD File Extension LaTeX Font Definition File Settings N/A Text File used by LaTeX, a typesetting system used to create formatted Documents; contains a font declaration that maps LaTeX font properties to TeX font specifications; used to describe how LaTeX font attributes are Translated into TeX fonts.
.FLST File Extension Adobe InDesign Flattener Presets File Settings Adobe Systems Binary Settings File created by Adobe InDesign, a digital and print Publishing Application; contains presets for flattening Document content, such as Transparent Images and text; enables publishers to reuse flattening settings so they can create publications with the same properties.
.FDS File Extension Nintendo FDS ROM Game N/A Binary Game File used by emulation software for the Nintendo Family Computer Disk System (also called Famicom Disk System); saves a copy of the original Game cartridge data; allows the Game to be played on a PC with supporting emulators.
.FADEIN File Extension Fade In Document Page Layout GCC Productions Text Screenplay Document created by Fade In, a professional screenwriting application; contains rich text in screenplay format; includes user-created characters, locations, scene times, scene intros, character extensions, and transitions; can be exported as a .FOUNTAIN or .FDX file.
.FWTB File Extension Freeway Template Bundle Web Softpress Unknown Website Document template bundle created and used by Freeway Pro, an OS X app that allows users to create websites without coding experience; stores one or more website templates, which are used for implementing a popular design multiple times; may include template group, copyright, and description information.
.FWTEMPLATE File Extension Freeway Template Web Softpress Unknown Website Document template created and used by Freeway Pro, an OS X WYSIWYG app that allows users to create websites without coding; stores a website template, which contains information about a website appearance and layout; similar to the .FREEWAY Document but used for implementing a popular theme multiple times.
.FWBACKUP File Extension Freeway Backup Backup Softpress Unknown Backup file created and used by Freeway Pro, an OS X app that allows users to create websites without coding; contains a copy of a .FREEWAY Document.
.FRDOC File Extension FineReader Document Page Layout ABBYY Unknown Document created and used by ABBYY FineReader, a program that uses OCR technology to convert images and other Documents into searchable text Documents; saves customizations that the user has made to any areas of the scanned .PDF file.
.FSD File Extension Flowsheet Document Page Layout AmsterCHEM XML Flowsheet Document created and used by the Cape Open to Cape Open (COCO) simulation environment; contains a chemical flowsheet, which may include streams, unit operations, controllers, and flow constraints; also stores information used to configure the flowsheet, such as stream types, color schemes, flowsheet options, and property packages.
.FODP File Extension OpenDocument Flat XML Presentation Data Oracle XML Presentation file saved in the OpenDocument format, but saved using a flat XML Format">XML Format instead of the .ZIP container used by standard .ODP files; makes auto-generating presentations simpler and allows the presentations to be readable with a text editor.
.FODT File Extension OpenDocument Flat XML Document Text Oracle XML Text Document saved in the OpenDocument format, but stored as a flat XML file instead of the .ZIP container used by .ODT files; allows the Document information to be more human readable; also provides an easier alternative than the ODT format for generating Documents automatically without needing a Document editor.
.FODS File Extension OpenDocument Flat XML Spreadsheet Spreadsheet Oracle XML Spreadsheet saved in the OpenDocument format, but stored as a flat XML file instead of the .ZIP container used by .ODS files; allows the spreadsheet information to be more human readable; also can be an easier alternative than the ODS format for generating spreadsheets automatically without needing a spreadsheet editor.
.FLR File Extension Flare Decompiled ActionScript File Text Flare Unknown Text File that contains decompiled ActionScript code from an Flash (.SWF) file; extracted from a Flash Document using the Flare decompiler; saved by default with the same name as the Flash Document (i.e. "file1.swf" produces "file1.flr" as the decompiled file).
.FWTEMPLATEB File Extension Freeway Template Bundle Web Softpress Unknown Website Document template bundle created and used by Freeway Pro, an app that allows users to create websites without having to write any code; contains one or more website templates, which includes information describing the layout and appearance of the site.
.FFL File Extension Find Fast Document List System Microsoft Unknown Contains a list Documents found by Microsoft Find Fast, a search feature used by Microsoft Office and Outlook; created and updated using the Find Fast control panel and should not be opened manually.
.FADEIN.TEMPLATE File Extension Fade In Template Text Kent Tessman Unknown Template created by Fade In, a professional screenwriting application; similar to a .FADEIN file but can be applied to other FADEIN Documents as a template; contains rich text in screenplay format; includes user-created locations, scene times, characters, scene intros, character extensions, and transitions.
.FBT File Extension ABBYY FineReader Document Options File Settings ABBYY Binary File used by ABBYY FineReader, a program that uses OCR technology to convert images and other Documents into searchable text Documents; saves user patterns and Language information that assist the software in recognizing text.
.FHD File Extension FreeHand Drawing File Vector Image Adobe Systems Unknown Vector-based drawing image created by FreeHand, a program used to create illustrations and Page Layouts; contains lines and Shapes, also called paths, to create Drawings; can store simple Shapes or complex Drawings that use three-dimensional effects; used for storyboarding and multipage Documents.
.FTS File Extension Full Text Search System N/A Unknown Index created by older versions of the Windows Help system; used for searching through the text of help Documents.
.FDD File Extension FormDocs Document Page Layout FormDocs Binary Document created by FormDocs, a program used for creating structured forms; may be a multi-page Document and stores the layout of labels, text fields, checkboxes, and other form elements; used for filling, printing, and managing digital business forms.
.FRF File Extension Free Report Form File Page Layout Fast Reports Unknown Page layout file created by FreeReport, a free program and software development library used for creating reports that can be embedded into Delphi/C++ software applications; saves the structure of the Document as well as fillable fields; used by software applications that require a reporting component.
.FFT File Extension Adobe Audition Noise Print File Plugin Adobe Systems Binary Audio filter used by Adobe Audition, an audio production application; saves settings that limit audio frequencies so that certain portions of the waveform can either be isolated or pronounced; enables engineers to fine-tune the sound of audio data.
.FTIL File Extension e-Hastakshar Contract Note Misc FTIL Binary Secure Document that has been protected and signed using the e-Hastakshar Verify Utility; saved in a zipped and encrypted format that can only be viewed after entering the correct user ID and password with the e-Hastakshar Verify Utility.
.FPK File Extension JetForm FormFlow File Misc Adobe Systems Unknown Forms file created by software products developed by JetForm or Accelio; discontinued after the software products were acquired by Adobe Systems, who now uses the .PDF format for form Documents.
.FQC File Extension FAQ Creator File Data CaosG Unknown File created by FAQ Creator, a program used for creating HTML, Plain Text, .DOC, and .PDF help Documentation; stores the help content in the form of questions and answers; can be used for generating software manuals or website FAQs.
.FWDN File Extension fWriter Document Text MSS Software and Services Binary Text Document created by fWriter, a word processing application localized in Spanish; saves text and page formatting information; used for writing simple text Documents.
.GS File Extension Google Apps Script Developer Google Text Script written in Google Apps Script, a programming Language based on JavaScript and used for automating tasks across Google products online; used for creating online Web applications, such as a Web interface, a program that sends custom emails, or a program that automatically fills and formats Google Docs Documents.
.GS File Extension Google Apps Script Developer Google Text Script written in Google Apps Script, a programming Language based on JavaScript and used for automating tasks across Google products online; used for creating online Web applications, such as a Web interface, a program that sends custom emails, or a program that automatically fills and formats Google Docs Documents.
.GUI File Extension Dr.Explain Project File Data Indigo Byte Systems Binary Project File created by Dr.Explain, a help authoring tool; contains help topics and articles written by the help Documentation developer; used for publishing help manuals in Windows Help (.CHM), .PDF, and online HTML formats.
.GRAPHML File Extension GraphML File Data The GraphML Team XML Document defined in the GraphML format, an XML Format">XML Format used for describing mathematical graphs; specifies edges and vertices as well as their properties; used for visualization, performing proofs, and implementing algorithms.
.GPF File Extension Gecko Patch File Game Nuke Binary File used by Gecko OS, a program used to load Nintendo Wii Games and apply cheat codes; contains data and logic that modify Game content; often used by third-party homebrew developers for creating cheat codes; commonly created with hex editor programs.
.GA3 File Extension Graphical Analysis 3 Document Data Vernier Unknown Document created and used by Graphical Analysis, an application used by middle and high school science students to produce, analyze, and print graphs; may contain graphs, data tables, histograms, text and calculated columns.
.GRV File Extension Office Groove File Data Microsoft XML File used by Microsoft Office Groove, a collaboration program used in professional environments; contains account information or a Groove invitation; used for logging into Groove or inviting associates and co-workers to view a Document or Web page.
.GP4 File Extension Guitar Pro 4 Tablature Misc Arobas Music Unknown Guitar tabs format used by Guitar Pro 4, a multitrack guitar composition and accompaniment program; may contain guitar, bass, or banjo tabs; saves data in a music notation format that can be opened by Guitar Pro or other open-source guitar notation programs.
.GV File Extension Graphviz DOT File Text AT and T Unknown Document that contains a text description of graphs of nodes and edges; written in the DOT Language and can be read by Graphviz compatible software programs.
.GID File Extension Windows Help Global Index File Settings Microsoft Unknown Index created the first time you search Windows Help; used as a configuration file in Windows 95 and Windows 98; allows for faster, more efficient access to Help Documentation by indexing the help topics.
.GLO File Extension RoboHelp Glossary File Data Adobe Systems Text File created by RoboHelp, a Windows help Documentation authoring program; saves glossary terms that are used for the help Documentation; saved as part of the RoboHelp project (.XPJ) and can be compiled into the final help Documentation.
.GPRX File Extension Geoxa Project File GIS Creative GIS Solutions XML GIS Document created by Geoxa spatial visualization software; saves the layout of a mapped region (or other spatial data) created in the software; supports imported layers from ESRI shapefiles (.SHP), MrSid (.SID) files, GeoTIFF (.TIF) files, and other GIS formats.
.GF File Extension METAFONT Bitmap File Font N/A Unknown Font File generated by TeX typesetting applications; saves the bitmap representation of a font that was originally in the equation-based METAFONT .MF format; used for generating glyphs (characters) into TeX Documents as well as printing fonts for Document proofs.
.GLOX File Extension Microsoft Office SmartArt Graphics Layout File Vector Image Microsoft Binary Graphics file used by Microsoft Office productivity applications; contains the layout and styles for a graphic and includes placeholders for inserting text; used for conveying information and ideas in presentations, charts, and Documents.
.H File Extension C/C++/Objective-C Header File Developer N/A Text Header file referenced by a C, C++ or Objective-C source code Document; may contain variables, constants, and functions that are used by other files within a programming project; allows commonly used functions to be written only once and referenced by other source files when needed.
.HQX File Extension BinHex 4.0 Encoded File Encoded N/A Text Binary to Hexadecimal text file created for Mac computers; contains data that has been compressed and encoded from an 8-bit binary format into a 7-bit text format; can be useful for transferring binary images, Documents, and Multimedia as text in email attachments.
.HPT File Extension HotDocs PDF Template Page Layout HotDocs Unknown Template created by HotDocs, a Document preparation application; stores a template for a digital form that contains fillable fields; can be published to an .HPD Document, which then can be filled with user answers.
.HLP File Extension Windows Help File System Microsoft Binary File used by Windows Help, a program provided with Windows that lets users read help information; contains Documentation and indexes for Windows programs or the Windows operating system; compiled using Microsoft Help Workshop (HCW.exe).
.HELP File Extension Mac OS X Help Book System Apple Binary File used by Help Viewer, a help Documentation viewer included with Mac OS X; contains a bundle of Documents, which may include HTML and CSS files as well as indexing information; commonly used for Mac OS X application help Documentation.
.HPG File Extension HPGL Plot File Vector Image Hewlett-Packard Text Plotter file created in the Hewlett-Packard Graphics Language (HPGL); includes a line series of two-letter codes, such as "SS," which declares the standard font for the plot; may include optional parameters with codes; used by various drawing programs to create printable plotter Documents.
.HDA File Extension HotDocs Auto-Assemble File Data HotDocs Unknown Template created with HotDocs, a Document template creation program; may include rules and formulas that can be used to automatically include or remove information from a Document; publishes a template that is used to automatically assemble a Document.
.HPS File Extension HPL Script Game Frictional Games Text Game script used by HPL, a Frictional Games Game engine that is used for first-person horror Games such as Amnesia: The Dark Descent and Penumbra: Black Plague; saved in a Plain Text format and contains functions that define events that occur in a Game map, such as doors slamming, scream sounds, or other horror events.
.HMXZ File Extension Help & Manual Compressed Project Data EC Software Zip Help Documentation project created by Help & Manual technical Documentation software; contains help content, including help page text, images, and formatting; stores all files, including the XML project file, as a compressed .ZIP archive.
.HMXP File Extension Help & Manual XML Project Data EC Software XML XML project file created by Help & Manual, a program used for creating help Documentations; saves references to project files as well as project settings, but does not store the referenced project assets, such as images; differs from .HMXZ files, which store all assets in a single archive.
.HWP File Extension Hanword Document Text Hancom Binary Document created by Hanword (formerly Hangul Word Processor), a Korean word processing application; contains Document formatting, graphics, and text; used specifically for saving Documents written in Hangul, which is the native alphabet of the Korean Language.
.H1S File Extension Windows Assistance Platform Help File System Microsoft Binary Compiled help Document format introduced with Windows Vista and also supported in Windows 7; run by the Assistance Platform client (HelpPane.exe), which is installed by default in Windows; used by Microsoft and OEMs for producing help Documents, but not used by third-party software developers.
.HKI2 File Extension WinHKI HKI2 Archive Compressed N/A Unknown File Archive compressed with the WinHKI file archiving program; uses file compression optimized for program data such as Office Documents, Internet files, and programs themselves.
.HMX File Extension Help & Manual 4 Project Misc EC Software Text Help Documentation project created by Help & Manual version 4; saves help content and project settings; can be exported to a variety of formats, including HTML Help (.CHM), Winhelp (.HLP), .PDF, Visual Studio Help, Word Documents, eBooks, or print manuals.
.HS File Extension Haskell Script Developer N/A Text Source Code of a program written in Haskell, a purely functional programming Language, meaning the code is based on strictly on functions; also uses non-strict semantics, which allows the user to define functions and data structures; similar to a .LHS file.
.HTA File Extension HTML Application Executable Microsoft Text Program that can be run from an HTML Document; an executable file that contains hypertext code and may also contain VBScript or JScript code; can be created by simply changing the file extension of an .HTM file to an ".HTA" extension; run by the Microsoft HTML Application Host (Mshta.exe).
.HTX File Extension HTML Extension File Web Microsoft Unknown HTML Document that uses the Microsoft Indexing Service; contains code that defines how results from a Database should be displayed within a Web page; often created with Microsoft FrontPage Web development software.
.HYPETEMPLATE File Extension Hype Document Template Web Tumult Unknown Document template created by Hype, an application used to create animated and interactive website content with HTML5; saves the layout of a website project, which may include text, graphics, and other content; can be exported to web files for publishing on a webpage; useful for creating multiple web content Documents that use the same layout and theme.
.HHC File Extension HTML Help Table of Contents System Microsoft Unknown File created by HTML Help Workshop, a program used for creating HTML Windows software Documentation; saves the table of contents (or site map) used by Microsoft Help; enables help Documentation to be navigated in a Web browser.
.HHK File Extension HTML Help Index System Microsoft Unknown Help index file created by Microsoft HTML Help, a program used for creating Windows help Documentation; saves an index of keywords that each open a help page when clicked; enables quicker lookups for common terms.
.HAML File Extension Haml Source Code File Developer N/A Text Source Code file written in Haml, (HTML abstraction markup Language); stores a template written in Haml Language that is used to generate the HTML of a web Document; can be used to replace Ruby template scripts (.ERB files) with its abbreviated syntax.
.HHT File Extension Help and Support Center HHT File Text Microsoft XML File that defines content classifications for help Documents created with Microsoft Help and Support Center; specifies the way content is mapped to taxonomy terms and how new nodes are created in the taxonomy; stores elements in an .XML Format">XML Format.
.HXS File Extension Help 2 Compiled Help File Web Microsoft Text Help file compiled for Microsoft Help 2.0; contains help Documentation for Windows or other programs; uses HTML for content and XML for metadata.
.HXA File Extension Microsoft Help 2 Attribute Definition File Misc Microsoft XML File used by Microsoft Help 2.x help Documents; contains a list of name-value pairs that allow the help Documentation to be filtered based on user search criteria; saved in an XML Format">XML Format.
.HXK File Extension Microsoft Help 2 Index File Misc Microsoft Unknown File used by Microsoft Help 2.x projects; specifies information about how a help index is organized; often used for keyword, context-sensitive, and other help indexes defined in the .HXS help Documentation bundle.
.HXE File Extension Microsoft Help 2 Sample Definition File Misc Microsoft Unknown File used by Microsoft Help 2 help Documentation; contains information about sample files that can be included in the help Documentation bundle, such as source code examples; enables the sample files to be compiled into the final .HXS help file.
.HJT File Extension TreePad 6 Database File Data Freebyte.com Binary File created by TreePad 6 or earlier personal information management software; contains a set of Documents structured as a hierarchy of "nodes;" supports text, images, hyperlinks, structured data, and other personal content for each node.
.HXC File Extension Microsoft Help 2 Collection Definition File Misc Microsoft Unknown File used by Microsoft Help 2.x help Documents; defines the contents of a help collection and includes information such as the help project title, the help registration information, and pointers to the various help content files; used for building the .HXS help file.
.HTML0 File Extension Book Designer File eBook N/A Text eBook File saved by Book Designer, a program used to convert text Documents into various eBook formats; contains HTML code used to format the layout of the pages and text.
.HM3 File Extension Help & Manual 3 Project Data EC Software Unknown Windows help Documentation project created by Help & Manual 3; saves help pages formatted using RTF text; can be exported to several different formats, including Winhelp (.HLP) and HTML Help (.CHM).
.HVC File Extension HotDocs Variable Collection File Data HotDocs Unknown File used by HotDocs, an application used to prepare digital Document templates, such as legal and contractual forms; used for collecting user data when for conducting HotDocs Server interviews; used with a JavaScript (.JS) interview file.
.HDK File Extension HotDocs Registration File Misc HotDocs Unknown File used by HotDocs, a Document preparation program; contains a publisher key required to register templates for commercial use with the HotDocs Player; provided to the customer by a HotDocs sales representative after purchase.
.HDPMX File Extension HotDocs Publisher Mapping XML File Data HotDocs XML File used by HotDocs, a Document preparation application commonly used for generating legal and insurance forms; saves variable mapping information that allows third-party applications to interface with HotDocs.
.HLB File Extension VMS / VAX Help Library Misc N/A Unknown Library of help Documentation for a VMS / VAX system
.H77T File Extension MGD77T Header File Data National Geophysical Data Center Text Header file created and used by GEODAS ReFormat to MGD77T, a program used to format geophysical data into the Marine Geophysical Data Exchange (MGD77T) format; contains data that Documents the content and structure of the data contained in the associated .M77T data file; includes the survey ID, format, ship name, country platform, project funding date, and navigation instrument.
.HTZ4 File Extension HyperMaker 4 Publication eBook Bersoft Binary Publication or eBook created from an .HTML Document using HyperMaker, a professional website compiler; includes text and related media, such as images, videos, Flash Animations, and PDFs.
.HDX File Extension Delphi MultiHelp Index File Misc Autodesk Binary Help Documentation file used by older versions of AutoCAD design software; uses the filename ACAD.HDX and supplies an index for an associated ACAD.HLP (.HLP) file; not used by recent versions of AutoCAD.
.HBX File Extension BinHex Encoded File Encoded N/A Text Binary to Hexadecimal text file created for Mac computers; contains compressed and encoded data that was originally in an 8-bit binary format, but now is in a 7-bit text format; typically used for transferring binary images, Documents, and Multimedia data using a textual format in email attachments.
.HELPINDEX File Extension Help Index Document Data N/A Unknown Document used by Narrator, a narration audio producing application; contains data indexing HTML files found inside the Narrator application; some data held in the file includes the paths to each HTML help file.
.H1Q File Extension Microsoft Help Merged Query Index File Misc Microsoft Unknown Query index used by Microsoft Help, a system help program included with the Windows operating system; stored in the "Documents and SettingsAll UsersApplication DataMicrosoft Help" in Windows XP and the "ProgramDataMicrosoftAssistanceClient1.0en-US" directory in Windows Vista.
.IDPP File Extension Adobe InDesign Preflight Profile Settings Adobe Systems Binary File used by InDesign, a professional Publishing Application; contains settings that check whether there are problems with the Document; used for validating Documents before they are published to final draft.
.IDML File Extension Adobe InDesign Markup Language File Page Layout Adobe Systems Zip Document created by InDesign, a program used to create professional Page Layouts; contains several XML files, which represent a complete InDesign Document; stored as compressed package using Zip compression.
.IAM File Extension Inventor Assembly File CAD Autodesk Binary 3D CAD Assembly created with Autodesk Inventor; used for designing 3D digital prototypes and integrating 2D AutoCAD Documents into a 3D environment; contains an Assembly of many parts (.IPT) files.
.INX File Extension Adobe InDesign Interchange File Page Layout Adobe Systems XML Document exported by Adobe InDesign in XML Format">XML Format; completely describes an InDesign (.INDD) file, including pages, page content, text frames, colors, margins, guides, etc.
.IPF File Extension Interchangeable Preservation File Disk Image SPS Unknown Preservation format used to preserve the content of Amiga floppy disks; formatted similarly to the .IFF (Interchangeable File Format) used on Amiga systems; developed by the Software Preservation Society (SPS) as a means of saving and archiving Amiga Games and programs that are no longer developed.
.INLK File Extension Adobe InDesign Lock File Misc Adobe Systems Unknown Document lock file created by Adobe InDesign, a professional Page Layout program; created when an InDesign Document (.INDD file) is opened so that other instances of InDesign show warnings when trying to open or edit the Document.
.ISH2 File Extension Animation-ish FlipBook-ish Document Data FableVision Binary Flipbook, or "Flipbook-ish," Document created by Animation-ish, a drawing creativity application; contains a sequence of frames, which are drawn by the user; can be animated in the software at multiple speeds.
.INDB File Extension Adobe InDesign Book File Page Layout Adobe Systems Binary Book File created by Adobe InDesign, a professional Page Layout and publishing program; contains multiple .INDD Documents, which comprise the pages and chapters of the book; also stores the page numbers, indexes, and other formatting information.
.INDS File Extension Adobe InDesign Snippet File Page Layout Adobe Systems XML Snippet created by InDesign, a professional Page Layout program; contains a subset of an InDesign Document, such as a page item or a group of page items; stored in an XML Format">XML Format; used to export and reuse portions of a Document.
.INCA File Extension InCopy CS3 Assignment File Misc Adobe Systems Binary File used by InCopy, a word processor that integrates with the Adobe InDesign Page Layout program; contains page element previews from a subset of an InDesign Document (.INDD file), as well as access permissions for modifying associated .INCX linked content files; used to divide the work necessary for editing a publication.
.IDMS File Extension Adobe InDesign Snippet Page Layout Adobe Systems Binary Snippet created by InDesign, a desktop publishing program used to create professional Page Layouts; contains a subset of a Document, which includes one or more objects and their relative placement to each other; used for exporting and reusing portions of a page.
.IDAP File Extension Adobe InDesign Assignment Package Page Layout Adobe Systems Binary File used by InDesign, a desktop Publishing Application used to create professional Page Layouts; contains a subset of an InDesign Document (.INDD file) that has been modified by an editor; used to import edited page content back into the original InDesign Document.
.ICAP File Extension InCopy Package File Page Layout Adobe Systems Binary Package file used by InCopy, a writing and editing program used with Adobe InDesign; stores an .ICMA file and associated .ICML files in a compressed archive; used to package subsections of InDesign Documents for remote editing.
.ICML File Extension InCopy Document Page Layout Adobe Systems Binary Document created by InCopy, a professional writing and editing program; contains Document text, graphics, and Page Layout settings; used to save and load InCopy Documents; may also be used to link portions of an Adobe InDesign Document (.INDD file) using a network fileServer.
.ICMA File Extension InCopy Assignment File Misc Adobe Systems Binary Assignment file used by InCopy, a word processor that integrates with Adobe InDesign; contains links to a subset of an InDesign parent Document (.INDD file), as well as editing permissions for a specific user; used to assign a portion of a Document to an editor.
.IFS File Extension InfoSlips Package Data InfoSlips Binary Interactive Document generated by InfoSlips, an e-billing program used for sending financial Documents to customers; can be viewed with the free InfoSlips ForMe Viewer program; used by large organizations for translating "flat" Documents into secure, interactive ones for their customers.
.ICST File Extension InCopy Document Preset File Settings Adobe Systems Unknown File created by InCopy, a professional collaborative writing and editing program; contains default or customized Document presets; customizable settings include: whether the pages are facing, the width, depth, and measurement units of a text area and the width and height of the page size.
.INP File Extension Urdu InPage Document Page Layout Concept Software Binary Document created by Urdu InPage, a multilingual Publishing Application for the Urdu, Arabic, Persian, and English Languages; saves text using the Noorinastaliq font, which displays Urdu in nastaliq script; also supports standard Page Layout formatting.
.IDLK File Extension Adobe InDesign Lock File Misc Adobe Systems Unknown Source control file created when an InDesign (.INDD) file is opened; allows the file to be "checked out" and prevents the InDesign Document from being edited by more than one person at a time.
.IMD File Extension GIS Image Metadata File GIS N/A Unknown GIS file that contains georeferencing information for a corresponding raster image, such as a GeoTIFF (.TIF); can store coordinate location information as well as the referenced raster image; maps GIS images onto real-world geography.
.ISOZ File Extension Compressed Arbortext IsoDraw Illustration CAD PTC Binary Document created by Arbortext IsoDraw, a program used for creating 2D technical illustrations; saves an IsoDraw illustration (.ISO file) in a compressed format; may contain a drawing for a part catalog, service manual, or for another technical purpose.
.IGN File Extension RoboHelp Ignore List File Data Adobe Systems Text File created by RoboHelp, a program used for creating help Documents for Windows; saves a list of words that are ignored when the help user searches the resulting help Documentation; saved in a Plain Text format.
.INCD File Extension InCopy Document Page Layout Adobe Systems Binary File used by Adobe InCopy, a professional writing program that integrates with Adobe InDesign; contains Document text, graphics, page formatting, and styles; often used for editing smaller portions of a larger Document.
.INCP File Extension InCopy CS3 Package File Data Adobe Systems Binary Package used by InCopy, a professional writing and editing program that tightly integrates with the Adobe InDesign Page Layout program; contains an .INCA file and its associated .INCX files; used to package a subset of an InDesign Document for remote editing.
.INDP File Extension Adobe InDesign CS3 Package File Page Layout Adobe Systems Binary Package used by InDesign, a desktop publishing program used to create professional Page Layouts; stores the changes that have been made to a .INCP package by an editor; used to import finished content back into an InDesign Document (.INDD file).
.ILDOC File Extension QuickSilver Document Page Layout BroadVision Unknown Document created with QuickSilver, a high-level desktop publishing program; may be assembled from multiple sources, including text, graphic, and Database files; authored in Unicode and supports all European and Asian Languages.
.IGT File Extension iGrafx Document Template Vector Image iGrafx Binary Diagram template created by IGrafx, a business diagramming application; saves a diagram that can be used for creating IGrafx Documents (.IGX files) from the same starting point and with a similar appearance.
.INFOPATHXML File Extension Microsoft InfoPath Form Page Layout Microsoft Text File created by InfoPath, a program used for making Document forms; saves a form and can be used as an alternative to the .XSN extension, which is the default used by InfoPath; used for saving form designs.
.IDDX File Extension Static Default File Settings Adobe Systems Unknown File created by InDesign and InCopy, professional Page Layout creation applications; contains default Document settings; imported by InDesign right before .IDML files to keep consistent Document default settings; should not be manually opened or edited.
.INM File Extension FaxMaster Document Misc N/A Unknown Fax Document created by FaxMaster, an older faxing/OCR program for Windows.
.JSFL File Extension Flash JavaScript File Developer Adobe Systems Text Script written in Flash JavaScript (JSFL), an API that extends regular JavaScript to include the Flash Document Object Model (DOM); contains JFSL program code written in a Plain Text format.
.JDF File Extension Adobe Acrobat Job Definition File Settings Adobe Systems XML XML file created by Adobe Acrobat, an application used to create and edit .PDF Documents; contains job ticket and workflow instructions for printing; may include ink requirements, page orderings, print quantities, preflight profiles, and other requirements.
.JGZ File Extension Gzipped Javascript File Compressed N/A Unknown Javascript (.JS) file zipped using GZip (.GZ) compression; typically used for shrinking the file sizes of large Javascript Documents referenced by websites; can be decompressed on the fly by most Web Servers using a Gzip utility.
.JPD File Extension Joint PhotoDefiner Image Raster Image RGBLight Unknown Compressed image format used by PhotoDefiner; incorporates color space quantization before subsampling and DCT (Discrete Cosine Transformation; saved in a lossy format with a high PSNR (Peak Signal-to-Noise Ratio).
.JTX File Extension ESE Transaction Log Database Microsoft Binary Log file generated by the Extensible Storage Engine (ESE), a Database engine developed by Microsoft as part of the Windows API; stores records of changes to the Database over time; used for Backup and restore operations.
.JP1 File Extension Japanese (Romaji) Text File Text N/A Unknown Text Document that contains Japanese characters encoded in ASCII text; formatted in Romaji, a Romanized version of the Japanese Language; can be viewed in Adobe Acrobat or Reader if Japanese fonts are installed.
.KHI File Extension Dynamics AX Kernel Help Index File Misc Microsoft Unknown Contains an index of help Documentation (.KHD) files related the Microsoft Dynamics AX kernel; can be accessed using the Dynamics AX online help system.
.KHD File Extension Dynamics AX Kernel Help Data File Misc Microsoft Unknown Stores help Documentation for the Microsoft Dynamics AX kernel; contains information that can be accessed using the Dynamics AX online help system.
.KPR File Extension KPresenter Presentation Data KOffice Unknown Presentation or Slideshow created with KPresenter, a Unix presentation application; may include text, images, and other types of embedded objects; supports the standard OASIS OpenDocument file format.
.KWD File Extension KWord Document Text KDE Unknown Text Document created with KWord, a frame-based word-processing and desktop publishing program; includes advanced page formatting options and uses paragraph style sheets to apply styles to text, tables, columns, borders, etc.
.KMR File Extension KnowledgeMill Link File Misc KnowledgeMill Unknown File used by KnowledgeMill Filer, a Microsoft Outlook plug-in used for filing email content based on categories and business criticalness; saves a link to an artifact (e.g., a Document) filed into a KnowledgeMill Server.
.KNO File Extension DigIN Serialized Break Model Data EvREsearch Unknown Data File created by DigIN, a program used for information management and knowledge discovery; stores a "break model," which classifies the information from a set of digital resources (Documents, Web pages, etc.) into a structure that allows patterns, relationships, and origins of data to be discovered; organizes meaning in the data by content, context, and structure, which visually comprise what is called a Borromean ring.
.LST File Extension Data List Text N/A Text Contains a listing of various types of information; used by many kinds of programs, such as Microsoft Visual Studio; may be exported from a spreadsheet or Database program or may include a list of files to be installed by a software installer.
.LIB File Extension Generic Data Library Data N/A Unknown Library of information used by a specific program; often contains functions and constants referenced by a program; may also contain actual objects, such as text clippings, images, or other media; typically referenced by applications and should not be opened manually.
.LPK File Extension Tecplot Layout Package Data Tecplot Binary Visualization package created by Tecplot, a scientific visualization application; saves a plot layout (.LAY file) as well as the data required to generate the visualizations; useful for cataloging images or making large Documents.
.LTX File Extension LaTeX Document Text N/A Text Document created using the LaTeX typesetting Language; contains LaTeX markup tags and properties that define the Document structure and content; can include the actual Document text or reference the text from other files.
.LW4 File Extension Lightwright File Data John McKernon Software Unknown Document created with Lightwright, a software program for managing theatrical lighting paperwork; saved in a format that is a cross between a spreadsheet and a Database; can store 30,000 lights, 32,000 dimmers, 62 DMX universes, and up to six different control systems.
.LAYOUT File Extension LayOut Document Compressed Trimble Unknown Compressed file created by Layout, a architecture drawing program featured in SketchUp Pro; contains an .XML file that links to any resources referenced in your Document; also contains all of the files the XML file links to, such as text files, models, and images.
.LYT File Extension Adminsoft Document Layout File Data Adminsoft Unknown Document layout exported by Adminsoft, a free "double entry" accounting system; used for saving and exchanging financial Documents with other users; examples include customer sales invoices, account statements, sales quotes, and purchase orders.
.LIZD File Extension Live Interior 3D Compressed Document CAD BeLight Software Binary Compressed interior design project file created by Live Interior 3D Home and interior design software; saves the compressed version of a .LI3D Document; used for reducing the storage size of projects for emailing and archiving.
.LYX File Extension LyX Document Text LyX Unknown Document created with LyX - The Document Processor; designed to encourage writing based on the structure of the Document, not its appearance; formatted using the TeX typesetting engine.
.LP7 File Extension LP7 Digitally Signed File Data Lex Persona Unknown Digital evidence format used for authenticating Documents; supports both the CAdES and XAdES digital signature standards; developed by Lex Persona, based in Paris, France.
.LP2 File Extension iLEAP Word Processing Document Text C-DAC Unknown Text Document created by the iLEAP word processor; part of LEAP Office, an office productivity suite written in the Indian Language; includes a multilingual spellchecker and the ability to e-mail Documents directly from the program.
.LWP File Extension Lotus Word Pro Document Text IBM Binary Word processing Document created by Lotus Word Pro, a business-oriented word processor included with the Lotus Smart Suite; used to create reports, proposals, and other kinds of Documents.
.LXFML File Extension LEGO Digital Designer XML File Text The LEGO Group XML XML Document that describes the LEGO bricks used in a 3D scene created with LEGO Digital Designer; saved within the compressed .LXF model file; read by LEGO Digital Designer and can be viewed in a text editor.
.LINX File Extension iPod Links Folder Misc N/A Unknown Contains links to files or Notes within text Documents on an iPod; similar to a directory index on a website; used by various iPod programs
.LGC File Extension SimpleK Database File Database Prosystech Unknown Database format used by SimpleK, a master key system and key issuance software program; used by locksmiths as well as security and facility managers.
.LEX File Extension Adobe Linguistic Library Data File Data Adobe Systems Binary Lexicon data file created by Linguistic Library, an Adobe development kit used to add linguistic services, such as spelling and grammar checkers, to Adobe products; contains the shared lexicons, or words and their syntax, for a Language; used to store Language-specific data for Document validation in Adobe products.
.LREC File Extension Inter-Tel Web Conference Recording Video Inter-Tel Binary Video File created by Inter-Tel Web Conference software; contains a screen recording video and may include voice audio; also can capture the keyboard chat log, attendees, and the Document manager window during the conference.
.LATEX File Extension LaTeX Document Text N/A Text Document prepared by LaTeX, a high-quality typesetting system; often used for technical and scientific Documents, but can be used for many other forms of publishing.
.LEGAL File Extension DaveTech Legal Document Misc DaveTech Text File created by DaveTech programs such as DaveTech OS; saved in a Plain Text format and may contain license information, terms of service, or other legal information; used for storing official Documents for DaveTech software and services.
.LTR File Extension Letter File Text N/A Unknown Text Document containing a message or other correspondence.
.MAX File Extension 3ds Max Scene File 3D Image Autodesk Binary Three-dimensional scene file created by 3ds Max, a 3D Modeling, Animation, and rendering application; may contain multiple models that include wireframes, textures, lighting effects, shading, Animation, and other 3D design elements; used for developing professional graphics for Games, film, and television.
.MARKDOWN File Extension Markdown Documentation File Developer John Gruber Binary Text File created using one of several possible dialects of the Markdown Language; uses Plain Text formatting but contains inline text symbols that specify how to format the text (e.g., *bold* for bold text, or other markups for italics, indentation, headers, etc.); designed for writing Documentation in Plain Text that can be easily converted to HTML.
.MD File Extension Markdown Documentation File Developer John Gruber Text Text File created using one of several possible dialects of the Markdown Language; uses Plain Text formatting but includes inline text symbols that define how to format the text (e.g., bold, indentations, headers, table formatting); designed for authoring Plain Text Documentation that can be easily converted to HTML.
.MSO File Extension Microsoft Office Macro Reference File Misc N/A Unknown File created when saving a Microsoft Office Document as a Web page; contains information about macros and OLE (Object Linking and Embedding) objects included in the original file; may be referenced by the created Web page as a style sheet.
.MW File Extension Maple Worksheet Data Maplesoft XML Worksheet created with Maple, a technical computing software program; may include advanced mathematics equations, graphs, plots, Animations, user comments, and other data; encoded in an XML Format">XML Format.
.MWB File Extension MySQL Workbench Document Database MySQL Binary Database Document created by MySQL Workbench, a graphical interface used for creating and administering MySQL Databases; saves a Database design, called an EER (Enhanced Entity-Relationship) model; defines tables, views, routines, privileges, and other constructs for a Database.
.MDI File Extension Microsoft Document Imaging File Page Layout Microsoft Binary High-resolution, tag-based graphics format developed from the TIFF format; used by Microsoft Office for saving scanned Documents; may be turned into a Word (.DOC) Document using OCR (optical character recognition) software.
.MCDX File Extension Mathcad Prime Document Data PTC Binary Document created by Mathcad Prime, a program used for engineering calculations; can contain algorithms, functions, macros, symbols, plots, annotations, and other mathematical constructs; also supports free-form text as well as headers and footers for multi-page information; often used for storing complex engineering calculations.
.MINDNODE File Extension MindNode Document Data Markus Müller Binary Mind map Document created by MindNode, a conceptual diagramming application; saves a network of nodes represented using a hierarchy of parent, child, and sibling relationships; enables users to conceptualize ideas on an open-ended canvas.
.MMM File Extension Music Maker Arrangement File Audio MAGIX AG Binary File created by Music Maker, a music composition program; contains a multitrack arrangement comprised of music clips, transitions, and effects; can combine multiple imported audio formats into a single music composition.
.MSHA File Extension Microsoft Help Asset File Developer Microsoft XML File used by MS Help Viewer 1.x, a Visual Studio component that helps developers author help Documentation for software applications; saves the help manifest, which defines the help "Books" (help Documents), which contain "Packages" (.MSHC help content files) to be installed.
.MSHI File Extension Microsoft Help Index File Developer Microsoft Binary Help Documentation file created in the MS Help Viewer 1.x index format; saves a topical index that is used for browsing and searching the help Documentation; used by software developers when authoring the help topics for their software titles.
.MML File Extension FrameMaker Maker Markup Language File Page Layout Adobe Systems Text File created using the Adobe Maker Markup Language (MML); used by Adobe FrameMaker, a program used to produce and publish large structured Documents; contains formatting instructions for Page Layout, graphics, text, and other page properties.
.MFP File Extension MediaFACE Project File Page Layout Neato Unknown Custom disc or case label created with with MediaFACE label design software; typically created from a template (.MFT) file and formatted for a a specific label printing sheet; may include both images and text.
.MP File Extension LaTeX MetaPost File Vector Image N/A Binary File used by MetaPost, a graphics-drawing Language used for creating pictures in Encapsulated PostScript (.EPS) files and LaTeX Documents (.TEX and .LTX files); may contain basic drawing statements or more advanced instructions for algorithmic drawing.
.MNO File Extension Macromedia Design Note Data Adobe Systems XML Text File that contains information about a Web Document; saved in an XML Format">XML Format and has a main tag that contains descriptive items within tags; may be created by either Adobe Dreamweaver or Contribute.
.MVD File Extension Movie Edit Pro Movie File Video MAGIX Binary Movie project created with MAGIX Movie Edit Pro or the earlier Video Deluxe application; contains references to video and Audio Files, as well as Movie edit points and detected scenes; may also include a variety of custom effects.
.MWD File Extension MarinerWrite Document Text Mariner Software Unknown Document created with Mariner Write, a streamlined word processor for Mac OS X designed to be flexible and efficient; may contain formatted text, graphics, headers, footers, and other data.
.MGMX File Extension MindGenius XML Map File Vector Image MindGenius Binary Mind map created by MindGenius business diagramming software; saves a diagram such as a brainstorming chart, project plan, or a flowchart; used for storing presentation materials as well as for creating business Documentation; can be exported to a variety of Document formats, including PowerPoint (.PPTX), Visio (.VSD), and .PDF formats.
.MP11 File Extension Multisim 11 Project File CAD National Instruments Text CAD project file created by Multisim, a circuit design, Analysis, and Simulation Program; contains references to one or more circuit designs, which are stored in .MS11 files; may also contain simulation results, Documents, and reports; used for organizing and managing multiple designs in a project.
.MGMF File Extension MindGenius Map File Vector Image MindGenius Binary Mind map file created by versions 2-3 of MindGenius, a conceptual diagramming application; saves a diagram such as a flowchart, brainstorming map, or a strategy plan; used for business Documentation and presentation materials.
.MGA File Extension Manga Document Page Layout Manga Reader Zip Document used by Manga Reader, a program used to read Manga comic books and print cartoons; stores a compressed archive of the Document pages, including pagination data, text, and graphics; used for distributing manga electronically.
.MSD File Extension Map Service Definition File GIS ESRI Binary Published map file created by ArcGIS Desktop, a software suite used to create maps and process geospatial data; contains a map that has been published from an .MXD map Document; created for ArcGIS Server, which hosts the map for real-time viewing over a network.
.MNS File Extension AutoCAD Interface Settings File Settings Autodesk Text User interface settings file used by AutoCAD, a 2D and 3D design and Documentation tool; stores ASCII text properties that define how user interface elements are displayed; can be used for customizing the AutoCAD workspace layout.
.MMW File Extension AceMoney Money File Data MechCAD Software Binary Data File created by AceMoney, a personal finance tracking application; may contain account information, transactions, investment portfolio data, and other financial information; can be used for generating in-depth or summary-level reports.
.MVDX File Extension MindView Windows Document Page Layout MatchWare Unknown Document created and used by MindView, a mind mapping program used to visually brainstorm and organize ideas; contains one or more ideas made up of text, Shapes, images, branches, sub-branches, and other mind map elements.
.MYDOCS File Extension Send To My Documents System N/A Unknown Enables the "Send To→My Documents" option when right-clicking a file or folder in Windows; transfers the selected file to your "My Documents" folder
.MANIFEST File Extension Windows Application Manifest File System Microsoft XML XML Document that describes the manifest, or package contents, of a Windows software application; used by various Windows technologies for configuring and deploying software, including ClickOnce and the Common Language Runtime (CLR); often seen with the compound ".exe.manifest" file extension.
.MF File Extension Java Manifest File Developer Sun Microsystems Unknown Contains information about file packages in a Java archive (.JAR file); includes metadata about the archive such as what files it contains and what they are used for; included within the JAR file itself.
.MWP File Extension Lotus Word Pro SmartMaster File Text IBM Unknown Template for creating a new Lotus Word Pro (.LWP) Document; saves formatting options and custom settings for the Lotus word processing program; preinstalled SmartMaster files are typically saved in the C:LotusSMasters directory.
.MELL File Extension Mellel Word Processing File Text RedleX Unknown Word processing Document created with Mellel, a shareware word processor for Mac OS X; includes special features for educational use and creative and technical writing; also supports multilingual Languages.
.MELLEL File Extension Mellel Word Processing Document Text RedleX Unknown Text Document created with Mellel, an advanced word processor for Mac OS X; supports tables, lists, columns, word count, spell check, multiple Languages, and OS X services.
.MMZ File Extension MiraMon Compressed Map File GIS CREAF and UAB Zip Compressed map file created with MiraMon, a program for creating, viewing, and querying maps that is developed cooperatively by the Centre for Ecological Research and Forestry Applications (CREAF) and the University of Barcelona (UAB); contains both raster and vector graphical map data; may also hold Documents, media, and other files linked to the maps.
.MMCOLLECTION File Extension Mail Manager Collection File Data Oasys XML File created by Mail Manager, an email and Document organizer plug-in for Microsoft Outlook; saved in an XML Format">XML Format and contains a collection of filing locations where emails are stored; may include private or company shared locations.
.MDOWN File Extension Markdown File Developer John Gruber Text Text File written using the Markdown Language, a textual markup Language used for creating Documentation; saves Plain Text as well as markups that specify how to stylize and format the text (i.e., indentations, italics, headers, etc.); often used for Documenting source code for software development projects.
.MGC File Extension Microsoft Clip Organizer Media Catalog Vector Image Microsoft Binary File used by Clip Organizer, a clip art program included with Microsoft Office; saves a collection of clip art that can be inserted into Documents or presentations; can be used for sharing groups of clip art images with others.
.MAW File Extension Access Data Access Page Database Microsoft Unknown Document created by the Microsoft Access desktop relational Database software; may include hyperlinks, text fields, and submit buttons; used as a front-end for accessing the data in an Access Database.
.MCW File Extension Monitor Calibration Wizard File Settings Hex2Bit Unknown Settings File created by Monitor Calibration Wizard, a program used to adjust monitor display settings; stores a monitor adjustment profile, which includes settings for brightness and color.
.MMU File Extension myPM Merge Data File Data Midori Media Binary File created by myPM Merge, an application used to generate Microsoft Word and Excel merged Documents; contains a merge definition, which specifies an input file, merge settings, and an output file; used for storing reusable merge settings.
.MP7 File Extension Multisim 7 Project File CAD National Instruments Text Circuit design project created by Multisim version 7, a circuit design and Analysis application; stores references to one or more PCB circuit designs, which are saved in .MS7 files; can also include simulation data, Documents, and reports.
.MP10 File Extension Multisim 10 Project File CAD National Instruments Text CAD project file created by Multisim, an application used for designing and analyzing circuits; includes one or more circuit designs, which are saved using .MS10 files; may also include simulation data, Documents, and reports; enables users to organize and manage multiple designs in a single project.
.MBB File Extension Kodak EasyShare Data File Misc Kodak Binary File generated by Kodak EasyShare, an application used to organize and share digital photos; contains information used by the program for creating picture catalogs; always uses the name ebsk.mbb, and is located with another related file called ebsk.mb.
.MAN File Extension Unix Manual Text N/A Text Help manual (called a "man page") used by the Unix Man utility, a program used to view Documentation; contains information about a Unix command or other Unix function; can be viewed within a unix shell using the man command.
.MARS File Extension Adobe MARS File Page Layout Adobe Systems XML File created by Adobe Acrobat, a program used to create and edit PDFs; stores an XML-friendly representation of a .PDF Document; used for storing PDF Documents in a more open and accessible format.
.MARKDN File Extension Markdown File Developer John Gruber Text Text Documentation file created using the Markdown markup Language; may be named README.markdn and often contains the readme for a software development project; uses Plain Text markups that can be used to render the Documentation with formatting (e.g., bold, indentations, headers, etc.).
.MBBK File Extension ManaBook Book Kit File Page Layout ManaBook Software Unknown File created by ManaBook, a Microsoft Word add-in used to combine multiple Word Documents into a single "book"; contains a template, or "kit", that allows users to create new book Documents that use the same Page Layout; used for managing many Documents through a single interface.
.NWP File Extension Magentic Wallpaper File Misc Perion Unknown Wallpaper or desktop background used by Magentic, a free Screensaver and desktop background program; wallpaper images are included with the program and may also be downloaded from the Internet.
.NDX File Extension dBASE Index File Data N/A Unknown Index file that defines the structure and fields of a Database; consists of a header followed by a B-tree, which contains a root, branch, and leaf nodes; used primarily by dBASE, but may be recognized by other Database programs.
.NB File Extension Mathematica Notebook Spreadsheet Wolfram Research Text Structured Document created by Mathematica, an application used for mathematical and scientific computation; may store text, images, audio, functions, and interactive user interface elements; allows mathematical results to be viewed in an interactive Document.
.NBP File Extension Mathematica Player Notebook File Data Wolfram Research Text Notebook file created by Mathematica, a program used for scientific and mathematical computations; may contain text, graphics, sound, calculations, and user interface components; used to store Analysis results as an interactive Document.
.NCX File Extension EPUB Navigation Control XML File eBook IDPF XML Table of contents file created according to the XML-based">XML-based Open Packaging Format (OPF) standard, which is part of the EPUB eBook specification; stores the Document title and author, as well as the navigation points for the eBook; used as part of an overall .EPUB archive.
.NARRATIVE File Extension Narrator Document Audio Mariner Software Unknown Document created by Narrator, an audio narration production program; contains chapter(s) of edited dialogue with different, customizable actor voices assigned to selected parts of the text.
.NJX File Extension NJStar Document Text NJStar Software Binary Text Document created by NJStar, a word processor used for authoring Chinese, Japanese, and Korean Documents; supports non-English character sets as well as instant translation between English and Chinese, Japanese, and Korean Languages.
.NDL File Extension Lotus Notes Doclink File Misc IBM XML Link file used by Lotus Notes, a business productivity and collaboration application suite; saved in an XML Format">XML Format and contains a reference to a Lotus Notes Document; used for sharing links to Documents over email and in Web pages.
.NYF File Extension myBase Database File Database Wjj Software Unknown Data File saved by myBase, a free-form Database system; can store unstructured text, formatted Documents, images, Web pages, e-mails, and other files.
.NRT File Extension Nokia Ringtone Audio Nokia Unknown Ringtone format used by Nokia cell phones; saves melodies as MIDI data, similar to a .MID file; can be converted to other more common formats using the Nokia Sound Converter included with Nokia PC Suite.
.NFO File Extension Age of Empires Player File Game Microsoft Binary File created by Age of Empires, a real-time strategy (RTS) Game where players control units and build empires; contains the player name and campaign progress; saves the player profile and in-Game progress.
.NITF File Extension National Imagery Transmission Format File Data U.S. Department of Defense Binary Imaging Data Format used by the U.S. government and military for transmitting Documents; may contain a combination of text, graphics, and metadata in a single file; also supports multiple layers; often used for satellite and aerial photos.
.NWM File Extension Nisus Macro Text Nisus Text Macro created by Nisus Writer Pro, a rich text word processor; contains code for the automated commands that take care of time-consuming tasks like removing repeated sentences or reorganizing the content of your table of contents in your Document.
.NSF File Extension NES Sound Format File Audio N/A Unknown Music File from an original Nintendo (NES/Famicom) Game; allows music from Nintendo Games to be played without loading the actual Game; can be opened by a variety of NSF players.
.NRL File Extension Autonomy Interwoven Link File Data Autonomy Interwoven Unknown File used by Interwoven content management system (CMS) solutions, which organize company-wide digital resources and help to manage work flow; contains a link reference to a resource within the CMS; saved in text format with a library name, Document, and version number.
.NRBAK File Extension NeatReceipts Backup File Backup The Neat Company Unknown Backup file created by NeatReceipts, a tool in NeatWorks, which is an older version of the digital filing system software, Neat 5; contains a Backup of your scanned Documents, including receipts and business cards; similar to the .NBAK and .NWBAK files.
.NVA File Extension NVA Document eBook NVA Binary Document used by NVA Reader, an application used to read select eBook Files; contains a book in the NVA format, which is similar to the PDF format with some alterations.
.NWBAK File Extension NeatWorks Backup File Backup The Neat Company Unknown Backup file created by NeatWorks, which is an older version of the digital filing system software, Neat 5; similar to the .NBAK and .NRBAK files; contains a Backup of your scanned Documents, including Contacts and receipts.
.NRF File Extension Neat Document Folder File Data The Neat Company Unknown Document folder file created by NeatWorks, a digital Document organizing application; contains an exported copy of a Neat Document folder that can be shared between Neat users; replaced by the .NDX extension when Neat 5 was released.
.NVDL File Extension NVDL Script Data International Standards Organization Text XML file created in the Namespace-based Validation Dispatching Language (NVDL) format, which is used for validating XML Documents that use multiple namespaces; stores a list of actions to take for validation; allows the structure of XML Documents to be tested.
.NDOC File Extension Naver Word Text NHN Unknown Online Document created by Naver Word, a Web-based word processing and productivity application; supports templates, stylized text, page formatting, tables, charts, and images; can be accessed through an NDrive online storage location.
.NOW File Extension Readme File Text N/A Unknown Text Document with important information about a program or software update; may include installation instructions or a list of new features in the update; often named "readme.now."
.OTF File Extension OpenType Font Font N/A Unknown Font format developed by Adobe and Microsoft; combines aspects of PostScript and TrueType font formats; fully scalable, meaning the font can be resized without losing quality.
.ODS File Extension OpenDocument Spreadsheet Spreadsheet Oracle Zip Spreadsheet created by the Calc program included with StarOffice or the open-source office suite, Apache OpenOffice; stores data in cells that are organized into rows and columns; formatted using the OASIS OpenDocument XML-based">XML-based standard.
.OPML File Extension Outline Processor Markup Language File Web N/A XML Outline Document written in OPML (Outline Processor Markup Language); used to exchange lists of Web feeds (such as .RSS files) between Web feed aggregators; also used for other general outlining purposes.
.OLD File Extension Backup File Backup N/A Unknown Typically used as an indicator for a Backup copy of a file; appended to the filename when a newer version of the file has been created or saved by a certain program; often placed after the original file suffix (i.e. Document.doc.old would be a Backup copy of the file "Document.doc").
.OBD File Extension Office Binder Document Data Microsoft Binary File created by Office Binder, a program used to link common Microsoft Document file types together; stores a "binder," which includes a collection of Office Document objects; used for linking Document content together from Microsoft Word, Excel, PowerPoint, Project, and Visio files.
.OTL File Extension NoteTab Outline File Data Fookes Software Unknown Document created with NoteTab, a text and HTML editor that includes advanced editing options; typically contains blocks of text that are organized by headings; may be saved as a template for creating other similar files.
.OMP File Extension OpenMind Windows Document Page Layout MatchWare Unknown Mind map Document created and used by MindView (formerly OpenMind), an application used to visually brainstorm and present ideas; contains a map with one or more ideas, which includes text, Shapes, branches, and other mind map elements.
.OMP File Extension OpenMind Windows Document Page Layout MatchWare Unknown Mind map Document created and used by MindView (formerly OpenMind), an application used to visually brainstorm and present ideas; contains a map with one or more ideas, which includes text, Shapes, branches, and other mind map elements.
.ODB File Extension OpenDocument Database Database OASIS Zip File created by Apache OpenOffice Base (OOBase), an open source desktop relational Database program; formatted according to the OpenDocument standard; stores an archive of data files that comprise the Database; used to save structured information such as tables and records.
.ODC File Extension Office Data Connection File Settings Microsoft Text Connection information file created by Microsoft Excel, a spreadsheet application included with Microsoft Office; contains properties to connect to, and retrieve data from, an external data source; may include a connection string, data queries, authentication information, and other settings.
.OLP File Extension Office Live Package Web Microsoft Unknown Package created by Microsoft Office Live, a web service that provided website creation tools and Document sharing and consisted of Office Live Workspace and Office Live Small Business; contains web pages, Documents, page templates, and images; includes the placement of all the aspects of your site so everything is placed in the correct location when your receiver opens the package; enables easy transfer to share your web site.
.ODTTF File Extension Obfuscated OpenType Font Font N/A Unknown Font File format used in the XML Paper Specification .XPS file and Microsoft Office 2007 formats; stores an obfuscated OpenType font that is based on the fonts used in the original Document.
.OTS File Extension OpenDocument Spreadsheet Template Spreadsheet OASIS Binary Spreadsheet template created by Apache OpenOffice (formerly OpenOffice.org) or another spreadsheet application that supports the OpenDocument standard; allows users to create multiple .ODS spreadsheet files using the same styles and formatting; saved using OASIS OpenDocument XML-based">XML-based formatting.
.OTH File Extension OpenDocument HTML Template Web OASIS Binary Template file created by OpenOffice.org or another office productivity application that supports the OpenDocument standard; often contains template header and footer elements as well as style and formatting settings; used for styling HTML Documents with a similar appearance.
.OTP File Extension OpenDocument Presentation Template Data OASIS Binary Presentation template created by Apache OpenOffice (formerly known as OpenOffice.org) or another presentation software that supports the OpenDocument standard; often includes a master slide as well as a content slide with a company header and footer; used for styling presentations with the same appearance.
.ODF File Extension OpenDocument Formula Misc Oracle Zip Document created by Apache OpenOffice Math, a program used for creating math formulas; saves the text used for creating the formula as well as the pretty-printed equation; can be printed to a .PDF file with the formatted results.
.ODF File Extension OpenDocument Formula Misc Oracle Zip Document created by Apache OpenOffice Math, a program used for creating math formulas; saves the text used for creating the formula as well as the pretty-printed equation; can be printed to a .PDF file with the formatted results.
.ODG File Extension OpenDocument Graphic File Vector Image OASIS Zip Drawing saved using the OASIS OpenDocument specification; contains a vector graphic, which defines an image using points, lines, and curves; saved using XML Format">XML Formatting; commonly used for logos, illustrations, and other Drawings.
.ODM File Extension OpenDocument Master Document Text OASIS Binary Master text Document created by Apache OpenOffice or another word processor that supports the OpenDocument standard; saves links to external files that contain the Document content; may also include a table of contents and an index.
.ONE File Extension OneNote Document Data Microsoft Unknown Document created with OneNote, a note-taking program developed by Microsoft; accepts typed input as well as digitized handwriting; may also include text or objects pasted from other applications, such as images, Drawings, and audio/Video Clips.
.OPD File Extension OmniPage Document Page Layout Nuance Communications Unknown Document created with OmniPage scanning, OCR, and page creation software; may contain images, text, and Page Layout information; saved in a proprietary format that can only be opened with OmniPage or OmniPage Professional software.
.OCR File Extension Subtitle Workshop OCR Script Misc URUSoft Text Script used by Subtitle Workshop, a Movie Subtitle editor; saves a list of find/replace value pairs that replace optical character recognition (OCR) errors with corrected text; used for making the Subtitle text more accurate; can be used for multiple Languages.
.OLL File Extension TrialDirector Object Load List Data inData Text Load file used by TrialDirector, a program used to create, organize, and present trial information; contains ASCII text used to establish relationship for multi-page TrialDirector Documents and determine which tab is associated with each item.
.OTG File Extension OpenDocument Graphic Template Vector Image OASIS Binary Drawing template created using the OASIS OpenDocument standard; contains the default layout and drawing information for a vector graphic; stored in a file package using XML Format">XML Formatting.
.OXPS File Extension OpenXPS File Page Layout Microsoft Binary File created in the Open XML Paper Specification (OpenXPS) format, which is the same format used by .XPS files; similar to a .PDF file and describes the structure and content of a Document.
.ODI File Extension OpenDocument Image Raster Image OASIS Zip Image Document created using the OASIS OpenDocument standard; contains the image graphics as well as XML-based">XML-based definitions that describe the layout of the image; used for storing, exporting, and importing images in a standard format.
.OMCS File Extension Office Manager Access File Data Krekeler Unknown Text File that contains a link to an Office Manager Document Archive (.OMP file) stored on a SQL Server; saves the access parameters for the SQL Server; used for connecting to the Database.
.ODIF File Extension Open Document Interchange Format Text ITU-T Binary Encoded binary Document that uses the ODIF (Open Document Interchange Format) file format, which is part of the Open Document Architecture (ODA) standard; stores the binary data stream representation of an ODA Document; used as a transport format suitable for transmission between systems.
.ODO File Extension Online Operating System Write Document Text iCUBE Network Solutions Text Document created using Write, an Online Operating System (OOS) program used to create text Documents; contains text, page formatting, and other Document objects and styles; used to store Write Documents within the OOS environment.
.PDB File Extension Program Database Database N/A Unknown Database file used by several applications, including Pegasus, Quicken, MS Visual Studio, and Palm Pilot software; stores data in a structured format; typically installed with the corresponding application.
.POD File Extension Terminal Reality Game Data File Game Terminal Reality Binary Container format used by Terminal Reality Games; may store various types of Game data, such as 3D Models, textures, sounds, maps, and the user interface.
.PFX File Extension PKCS #12 Certificate File System N/A Unknown Encrypted security file that stores secure certificates used to authenticate a person or device, such as a computer or Web Server; requires a password to be opened; can be installed by right-clicking the file and selecting "Install PFX."
.PLT File Extension AutoCAD Plotter Document Vector Image N/A Unknown Vector-based plotter file created by AutoCAD drawing software; can be printed using a plotter, which prints images using lines instead of dots; based on the .HPGL format.
.PRT File Extension Pro/ENGINEER Part File CAD Parametric Technology Binary Part file created by Pro/ENGINEER, a CAD program used to design manufactured parts and Assembly processes; contains part information, including a 3D Model and part structure; can be combined with other parts into an Assembly file (.ASM file).
.PRT File Extension Pro/ENGINEER Part File CAD Parametric Technology Binary Part file created by Pro/ENGINEER, a CAD program used to design manufactured parts and Assembly processes; contains part information, including a 3D Model and part structure; can be combined with other parts into an Assembly file (.ASM file).
.PPF File Extension Picture Publisher Image File Raster Image Corel Binary Image file created by Corel Picture Publisher, a program previously owned by Micrografx; contains a bitmap image; can be created and edited with various text, drawing, and painting tools in Picture Publisher.
.PJM File Extension xPlan Model Data adnx Unknown Model created by xPlan, a project management application; similar to the .PJ2 file; holds a Documents folder and two .XML files; contains project data input such as reports, project tasks, resources, and events.
.PDX File Extension Adobe Acrobat Index File Data Adobe Systems Unknown Index file created by Adobe Acrobat, a Document creator and viewer program; contains an index of Documents and directories; enables the capability to search across multiple .PDF Documents; useful for businesses that use large sets of PDF Documents, such as lawyers.
.PCL File Extension Printer Command Language Document Page Layout HP Unknown Digital printed Document created in the Printer Command Language (PCL) page description Language; describes the layout of text and graphics for the Document; originally used by Hewlett-Packard printers in the 1980s and now used by HP LaserJet printers and others; widely used but offers fewer features than the PostScript (.PS) format.
.PGP File Extension AutoCAD Program Parameters File Settings Autodesk Text File used by AutoCAD, an engineering design and Documentation CAD application; contains external command definitions, which allow users to run custom commands in AutoCAD; can be used for running external programs and Windows commands through the AutoCAD interface; also used for defining aliases, or shortcuts, for commands with verbose syntax.
.PUB File Extension Publisher Document Page Layout Microsoft Binary File created by Microsoft Publisher, a program used to create professional Documents and marketing materials; contains raster and vector images, text, and drawn objects formatted in a Document; used to create newsletters, brochures, posters, and other Documents.
.PRO5X File Extension ProPresenter 5 Bundle File Data Renewed Vision Zip Bundle created by ProPresenter, a presentation preparation program; similar to a .ZIP folder, includes .PRO5 Documents along with any media elements included in the presentation or playlist selected; helpful for archival purposes and for transferring playlists between computers.
.PSW File Extension Password Depot 3-5 File Data AceBIT Binary File created by Password Depot versions 3-5; saves personal logins, passwords, credit cards, and other sensitive information; incorporates encryption using a master password so that the information can only be viewed and modified with the password.
.PPX File Extension Serif PagePlus Template File Page Layout Serif Unknown Template for creating a new Document (.PPP file) with PagePlus, a Document design and publishing program; includes a predesigned layout that can be used to create multiple Documents with a similar appearance.
.PTT File Extension Pro Tools Session Template Audio Avid Technology Binary Session template created and used by Pro Tools, an audio editing and production program; contains session data, which may include audio and software instrument tracks; also includes session parameters such as Sample Rate and Bit Depth.
.PWD File Extension Pocket Word Document Text Microsoft Binary Text Document created by Pocket Word for Windows CE, a reduced version of Microsoft Word for the Windows Compact Edition mobile platform; can be opened by TextMaker (included in SoftMaker Office) and converted to more standard formats, such as .DOC and .DOCX.
.PRS File Extension Harvard Graphics Presentation Data Harvard Graphics Binary Presentation or slide show created with Harvard Graphics presentation software; may include text, images, charts, graphs, and other media; typically created from a pre-built template.
.PTN File Extension PaperPort Thumbnail File Data Nuance Communications Unknown File created by PaperPort, a program used for scanning Documents, organizing files, and sharing Documents; contains data needed to display thumbnail images; serves as an index file for Documents used in PaperPort.
.PFL File Extension PDFill Project File Page Layout PlotSoft Unknown Modified PDF Document created with PDFill, a PDF editing program; may include additional text, images, highlights, comments, and forms with editable fields; can be exported as a standard .PDF file.
.PFL File Extension PDFill Project File Page Layout PlotSoft Unknown Modified PDF Document created with PDFill, a PDF editing program; may include additional text, images, highlights, comments, and forms with editable fields; can be exported as a standard .PDF file.
.PA File Extension Print Artist Project Page Layout Nova Development Unknown Print project created with Print Artist, a graphic design program; typically designed from a template and may include custom graphics and text; may be a brochure, greeting card, calendar, scrapbook, poster, or other type of printable Document.
.PRO4X File Extension ProPresenter 4 Bundle File Data Renewed Vision Zip Presentation package created by ProPresenter, a church worship slide preparation application; may include multiple slides as well as Documents, Audio Files, and video files; used for packaging all media files into a single bundle; useful for archival purposes and for transferring playlists between church computers.
.PAT File Extension Pattern File Raster Image Adobe Systems Binary Bitmap image used as a pattern that can be imported into multiple graphics programs; typically a square file that may be 8x8 pixels to 256x256 pixels in size; repeats to fill an area with the pattern; often used for creating a textured background.
.PSZ File Extension Compressed PostScript File Compressed N/A Zip PostScript (.PS) Document compressed with .ZIP compression; used for reducing the file size of PostScript Documents when transferring them via email or over the Internet; can be unzipped and then opened with any standard PS viewer.
.PAW File Extension Pawaa File Data Pawaa Software Binary File created in the pawaaFILE format, a format developed by Pawaa Software for secure storage and transmission of files, particularly in enterprise environments; encapsulates any file with an encryption layer and a usage policy so that the file is protected from unwanted access; also enforces audit trails and expiration dates so the file has additional levels of distribution control.
.PDE File Extension Processing Development Environment Source Code File Developer Processing Text Source Code file written in the Processing programming Language; may contain functions, variables, and other programming constructs; used for storing Processing programs, called "sketches," and running them within the Processing IDE; can be used for programming images, Animations, and interactions.
.PWT File Extension AutoCAD Publish To Web Template CAD Autodesk Unknown Drawing publishing template created by AutoCAD, a 2D and 3D design and drawing application; stores settings for publishing a drawing (.DWG file) to a Web HTML format; includes the properties for images, text, hyperlinks, colors, Web page titles, and video Animations; used for publishing Web Drawings with the same formatting.
.PSB File Extension Photoshop Large Document Format Raster Image Adobe Systems Binary Format used for saving large Photoshop Documents over 30,000 by 30,000 pixels in size; supports images up to 300,000 by 300,000 pixels; to enable .psb support, check the "Enable Large Document Format" within the File Handling pane of the Photoshop Preferences window
.P65 File Extension PageMaker 6.5 Document Page Layout Adobe Systems Binary Document created with Adobe PageMaker 6.5, a program used by businesses and home office professionals to create Page Layouts; contains formatted Document text and images; used for brochures, cards, newsletters, and other professional publications.
.PDR File Extension ProntoDoc for Word Recovered Document Page Layout Step Function Unknown File used by ProntoDoc for Word (PDW), a Microsoft Word plug-in used for generating Document templates; stores a template (.PDW, .PDE, .PDH, .PDM or .PDZ file) or a Document (.DOCX, .XLSX, .PDF, .XPS or other ProntoDoc content); used for recovering Document content in the event of an unscheduled Server system break.
.PSM File Extension Protracker Studio Module Audio N/A Unknown Tracker format used by Protracker Studio; contains tracks and song patterns that can be played back by an audio tracker.
.PGS File Extension PageStream Document Page Layout Grasshopper Unknown Document created and used by PageStream, a cross-platform Document publishing program; contains Document elements such as text blocks, images, formatting, styles, and objects.
.POPSHAPE File Extension PopChar Character Shape File Data Ergonis Software Unknown Character shape file used by PopChar, an OS X utility tool for accessing special characters and adding them to Documents; contains a drawing of a character shape.
.PDW File Extension pDRAW32 DNA File Data AcaClone software Unknown DNA file saved in the pDRAW32 format, which is used by molecular biology software; contains sequence data as well as the DNA name and coordinates for genetic elements on DNA plots.
.PX File Extension Pixel Image File Raster Image Pixel Unknown Image file saved by the Pixel image editor, a multi-platform image editing, photo retouching, graphics manipulation, and Animation program; supports layers, paths, channels, masks, and selections; may also include adjustment and effects layer like a Photoshop (.PSD) Document.
.PRNX File Extension XtraReports PrintingSystem Document Data DevExpress XML Document created by XtraReports, the DevExpress reporting suite used for creating complex, master-detail reports; contains PrintingSystem Documents; enables saving and opening saved report Documents; based on XML Language.
.PDC File Extension Lizard Safeguard Secure PDF File Encoded LockLizard Unknown Copy-protected .PDF file encrypted with Lizard Safeguard PDF security software; protects the PDF Document from unauthorized viewing, copying, sharing, modifying, screen grabbing, and printing.
.PEX File Extension Merak Peep Data File Data Merak Unknown Stores data models and reports created with Merak Peep, a petroleum economic evaluation program; used to create "What if" scenarios, analyze risks and market Sensitivity, forecast production levels, and estimate reserves.
.PWR File Extension PowerWrite Document Text J and ASoft Text Document created by J&ASoft PowerWrite, a simple text editor; similar to a .RTF file; contains a rich text Document that supports different fonts, font styles, font size, effects and word wrapping.
.PHR File Extension RoboHelp Phrase List Data Adobe Systems Text Plain text file created by RoboHelp, a program used for making Windows help Documents; saves a list of custom phrases that are specified by the help Documentation author, each of which can be matched to topics when the help reader searches the Documentation; saved as part of a help project (.XPJ file).
.PQB-BACKUP File Extension Pleco Chinese Dictionary Backup File Backup Pleco Unknown Backup file used by Pleco Chinese Dictionary, a Document reader, dictionary, and flashcard program for iOS that helps users learn Chinese; stores a Backup of a flashcard Database or user dictionary.
.PCS File Extension Pfaff Embroidery File CAD Pfaff Unknown Embroidery design used by Pfaff sewing and embroidery machines; contains a pattern that can be automatically stitched by the machine onto the target material; can be edited with desktop software and then uploaded to the machine for stitching.
.PM4 File Extension PageMaker 4 Document Page Layout Adobe Systems Unknown Page layout Document created by Adobe PageMaker 4; may include formatted text and images and multiple pages; used for created brochures, flyers, and other specially-formatted Documents.
.PWDP File Extension Password Pad Document Text Tan Thor Jen Binary Password-protected text Document created by Password Pad, a text editor used for securing Documents; locks the Document text using a password and encrypts the contents so that the Document can only be viewed by entering the password; used for saving personal information such as credit card numbers, website passwords, and diary entries.
.PM5 File Extension PageMaker 5.0 Document Page Layout Adobe Systems Unknown Page layout Document created by Adobe PageMaker 5, a program for creating high-quality publications; may be a newsletter, brochure, flyer, or other type of Document; includes text, graphics, and page formatting data.
.PWDPL File Extension Password Pad Lite Document Text Tan Thor Jen Binary Password-protected Document created by Password Pad Lite, a text editor that incorporates "lite" encryption; stores encrypted Document content so that the Document can only be viewed with the correct password; used for saving sensitive personal information.
.PM6 File Extension PageMaker 6.0 Document Page Layout Adobe Systems Unknown Page layout Document created by Adobe PageMaker 6; used for creating newsletters, brochures, and other Documents with specialized page formatting.
.PTW File Extension AutoCAD Publish To Web File Web Autodesk Unknown Settings File used by AutoCAD, a CAD application used for 3D design and Documentation; stores properties for a drawing that has been published to a Web format; placed alongside the published HTML content so that the Web Publishing Wizard can track what has been published.
.PM3 File Extension PageMaker 3 Document Raster Image Adobe Systems Binary Page layout Document created by Aldus PageMaker 3; can also be opened by Adobe PageMaker 4 or later, or by Adobe InDesign.
.POBJ File Extension Photo Pos Pro Vector Object File Vector Image Power Of Software Binary Vector object file used by Photo Pos Pro, a freeware photo and graphics editor for Windows; similar to a clipart graphic and saves a vector image that can be inserted into a Photo Pos Pro drawing or Page Layout Document.
.PDH File Extension ProntoDoc for Word Browser Display Document Template Page Layout Step Function Unknown File used by ProntoDoc for Word (PDW), a plug-in for Microsoft Word that allows users to auto-fill Document templates; stores a Document template and includes the Page Layout structure as well as template fields that are filled by data from one or more source Databases (SQL Server, SharePoint, and Oracle are supported); used for generating content conforming to the .MHT format.
.PDZ File Extension ProntoDoc for Word Structured Text Document Template Page Layout Step Function Unknown File used by ProntoDoc for Word (PDW), a Microsoft Word plug-in that helps generate and auto-fill Documents; contains a template for a Document and includes the page structure information and template fields that are filled by ProntoDoc for Word; used for generating content conforming to XML and other formats, which is useful for data interchange and other purposes.
.PDWR File Extension ProntoDoc for Word Conventional Document Page Layout Step Function Unknown Document used by ProntoDoc for Word (PDW), a Microsoft Word plug-in used for generating Documents; saves a Document template and includes the populated data fields that have been auto-filled from a source Database; used for rendering ProntoDoc for Word templates (.PDW files) into .DOCX, .PDF, and .XPS files.
.PDER File Extension ProntoDoc for Excel Conventional Document Page Layout Step Function Binary File used by ProntoDoc for Excel (PDE), a Microsoft Excel plug-in used for generating business Documents; stores a Document template and includes data that was populated from one or more source Databases (SQL Server, SharePoint, and Oracle are supported); used for rendering ProntoDoc for Excel templates (.PDE files) into .XLSX, .PDF and .XPS files; useful in business contexts for automatic report generation.
.PDFS File Extension Adobe PDF Presets File Settings Adobe Systems Unknown Settings File used by older versions of Adobe InDesign and Adobe Illustrator; contains instructions for exporting a .PDF file from an opened Document; used for creating PDFs with the same properties.
.PDP File Extension Adobe Portable Document Format File Page Layout Adobe Systems Binary Portable Document Format (PDF) file created by Adobe Acrobat or another program that includes the Acrobat plug-in; supports text, images, forms, and other data; commonly used for publishing Documents originally created in different formats.
.QDF File Extension Quicken Data File Data Intuit Unknown Financial Data Format used by Quicken personal finance software for Windows; saves accounts, transactions, portfolios, and balance information.
.QVW File Extension QlikView Document Data QlikTech International Binary Document created by QlikView, a business intelligence Analysis application; stores a QlikView application, which contains reports, charts, and key indicators for a business; used for analyzing business finances and other competitive intelligence information.
.QPF File Extension Quartus II Project File Data Altera Unknown Project File created by Quartus II, a program for analyzing and optimizing HDL (Hardware Description Language) designs; includes data related to a single design Analysis project; also contains information about the current version of the Quartus II software and all the revisions created for the project.
.QXL File Extension QuarkXPress Library Misc Quark Software Unknown QuarkXPress library that contains images, Calendars, XTensions, or other content referenced by QuarkXPress; may be inserted into an open QuarkXPress Document.
.QXD File Extension QuarkXPress Document Page Layout Quark Software Binary Desktop publishing Document created using QuarkXPress 5 or earlier; contains formatted text and images as well as Page Layout properties; may be used to create Page Layouts for newspapers, magazines, flyers, books, and brochures.
.QXT File Extension QuarkXPress Template Page Layout Quark Software Unknown Template file for creating new QuarkXPress projects; used for designing multiple Documents with similar layouts, such as brochures, newsletters, books, etc; may be included with the QuarkXPress software or created by the user.
.QVT File Extension QlikView Theme File Settings QlikTech International Binary Theme file used by QlikView, a business intelligence Analysis program; contains information that specifies the layout and styles of Document objects; used for changing the look and feel of QlikView Documents (.QVW files).
.RPT File Extension Crystal Reports File Data SAP Unknown Report or output file created by Crystal Reports, a program used for business-oriented reporting; can store data from multiple sources and different types of Databases; may be interactive, giving users capabilities such as live filtering and sorting.
.RELS File Extension Open Office XML Relationships File Page Layout Microsoft XML File contained within Microsoft Open Office XML Documents; contains XML specifications for how "parts" within a "package" are connected to form a Document; saved in a _rels directory of an Open Office XML Document.
.RDF File Extension ArcGIS Report Document File GIS ESRI Unknown Report file created by ArcGIS Desktop, an application suite for geospatial Analysis and visualization; stores a generated report, which can include GIS statistics formatted as tabular data; generated from a report layout (.RLF) file.
.RB4 File Extension Resume Builder 4 File Page Layout Sarm Software Binary Resume Document created by Resume Builder version 4, a program used to format and print resumes; supports text, images, and Page Layout formatting, as well as several different international Languages; may be exported to a Microsoft Word Document, .HTML Web page, or a text file.
.RMD File Extension Reference Manager Data File Data Thomson Reuters Binary Data File created by Reference Manager, an application used for creating bibliographies; saves the references for the bibliography and is also saved with a separate .RMX index file; used for storing citations and other references.
.RST File Extension reStructuredText File Text N/A Text Text File that contains code written in the reStructuredText markup Language; can apply basic styles and formatting to text Documents; used for in-line program Documentation (primarily for Python), and for creating standalone Documents and simple Web pages.
.RML File Extension Redline Markup Language File CAD Autodesk XML File created by Volo View, a program used for marking up CAD Drawings; saved in an XML Format">XML Format and contains annotations and other markups that are displayed in red text when overlaid on a drawing; enables design reviewers to embed Notes in CAD Drawings.
.RNG File Extension Nokia Composer Ringtone Audio N/A Unknown Monophonic ringtone format used by Nokia cell phones; can be created using the Nokia Composer program included with certain Nokia phones; because it is a monophonic format, only one note can be played at a time
.RTFD File Extension Rich Text Format Directory File Text Apple Binary Rich text file similar to an .RTF Document, but may contain attachments, such as images, PDFs, fonts, or other files; originally developed for the NeXT operating system and later moved to Mac OS X.
.RDO File Extension Xerox Rawster Document Object File Settings N/A Unknown Metafile used by the Xerox Document Assembler software for Xerox Digipath Scan and Makeready workstations and the DocuTech line of printers and scanners; defines how the printer/scanner should print or scan each page.
.README File Extension Readme File Text N/A Unknown Text Document referred to as a "readme file;" contains important information about the installation or usage a of certain software program or software update; may be included with a software installer or installed with an application.
.RDOC File Extension Ruby Document Developer N/A Text Document created by RDoc, a Ruby Documentation application; contains Documentation information in RDoc markup Language that is compiled in HTML to Document Ruby projects online.
.RTX File Extension Rich Text Document Text N/A Text Text Document that includes text formatting, such as bold characters, underlining, italics, different fonts and font sizes, etc; can be opened by most basic text editors and word processors.
.RFT File Extension Revit Family Template File 3D Image Autodesk Unknown Template for creating a data family in Revit, a building information modeling (BIM) program; used for starting a new family from scratch and may contain several custom 3D Model designs.
.RFD File Extension Recogniform Form Designer File Page Layout Recogniform Technologies Binary File created by Recogniform Document recognition software; contains the Page Layout structure, text, and other formatting information; used for scanning and storing digital copies of paper forms.
.RDOC_OPTIONS File Extension Ruby Document Options File Developer N/A Text File created by RDoc, a Documentation application for Ruby projects; contains options, or settings, for generating Documentation for your Ruby project; includes the comment format, character-set, excluded files, and output directory; included with your .GEM package.
.REFERENCE File Extension Budget In Brief Reference File Data N/A XML Reference file used by Budget In Brief, a program used for integrating budget data into a single Document; contains a list of references that can be imported into a Budget In Brief .BOOK file.
.SID File Extension Steam Game Data Backup File Game Valve Binary Backup file created by Steam, an application used to download and manage Valve video Games on desktop computers; contains compressed Game data created by the Steam Backup feature (steamBackup.exe program); used to Backup Games to DVDs or other external media.
.SPUB File Extension Swift Publisher Document Page Layout BeLight Software Unknown Document created by Swift Publisher, a Page Layout program for Mac; used for storing fliers, newsletters, announcements, booklets, and other Page Layout materials; saved in a proprietary format, but can be exported to .PDF, .EPS, .TIFF, and .JPG formats.
.SCM File Extension CLEO Compiled Script Game CLEO Binary Compiled script written for CLEO, a third-party scripting engine for Grand Theft Auto: San Andreas (GTA SA); enables players to expand the features of Game using custom functions called "opcodes;" can be created using Sanny Builder, a GTA modding utility.
.SWI File Extension SWiSH Project File Video SWiSHzone.com Unknown Flash project developed with Swish, an easy-to-use Flash authoring tool; can be used to create basic Flash Animations, interactive Flash programs, and Web-oriented Flash projects that can access Database information; may also be used to convert video and PowerPoint files to Flash Documents.
.SCDOC File Extension SpaceClaim Document CAD SpaceClaim Corporation Zip SpaceClaim Document created and used by SpaceClaim, a solid modeling CAD application; contains a 3D design, which includes IDs for 3D objects such as surfaces, edges, solids, bodies, and faces that appear in your design.
.SM File Extension StepMania Song File Game StepMania Unknown Song file format used by StepMania, a dance and rhythm Game that supports dance pad input; includes song information and references to music and image files; may be used for dance, pump, beat, and guitar songs.
.STY File Extension LaTeX Style Text N/A Text Style definition file used for formatting a LaTeX (.TEX or .LTX) Document; defines line styles, labels, how formulas should be aligned, and other information; saved in a text format in which definitions begin with a backslash () and comments begin with a percentage sign (%).
.SAF File Extension Street Atlas USA Map File GIS DeLorme Unknown Map file format used by DeLorme Street Atlas USA, a custom mapping and GPS navigation program; contains a detailed map of a specific region; also stores the map center coordinates, the current zoom level and magnification, user preferences, and custom routes or layers added by the user.
.SGM File Extension VisualBoyAdvance Saved Game Game VisualBoyAdvance Binary Saved state file created by VisualBoyAdvance, a Game Boy emulator; contains a snapshot of the Game state, which can be saved at any time during Gameplay; used for saving and loading in-Game progress.
.SLA File Extension Scribus Document Text Scribus XML Document created by Scribus, a free open source desktop Publishing Application; saved using XML Format">XML Formatting and contains Document text, images, and layout settings; used for saving written work.
.SLA.GZ File Extension Scribus Compressed Document Text Scribus Binary Compressed Document file created by Scribus, a free, cross-platform word processor; stores an .SLA file using Gzip compression (.GZ files); helps reduce the size of the SLA file, which is stored in an XML Format">XML Format.
.SYN File Extension TextPad Syntax File Plugin Helios Software Solutions Text Add-on file used by TextPad, a text editor for Windows; contains information that enables syntax highlighting for source code (e.g., .HTML, .CSS, Windows .BAT, etc.) or other text files that are opened in the editor; used for making text files easier to read.
.SKITCH File Extension Skitch Image Raster Image Skitch Binary Image Document created by Skitch, a program used to create, edit, and share screen capture images; stores a bitmap image, which may include a screen capture graphic and user edits; used for annotating and sharing images online through social networking websites.
.SHD File Extension Windows Print Job Shadow File System Microsoft Binary File created by Windows when a user submits a print job; stores header information for a print job, but does not store the actual spooled Document data; allows the print job settings to be "shadowed" so that the job can be resubmitted again if there is an interruption.
.SPL File Extension FutureSplash Animation Video N/A Binary Animation created with FutureWave FutureSplash Animator; a precursor to Adobe Flash; compatible with Flash Player.
.SFD File Extension Spline Font Database File Font FontForge Text Font File created in the Spline Font Database (SFD) format, which is the native format used by FontForge font editing software; describes one or more fonts in an ASCII text format; used for Documenting and editing fonts.
.SHOW File Extension Hanshow Presentation Data Hancom Binary Presentation Document created by Hanshow, the presentation software included with Hancom Office, a Korean office productivity suite; saves a collection of slides and can be used in various personal and professional contexts.
.STD File Extension Apache OpenOffice Drawing Template Vector Image Oracle Binary Template created by Apache OpenOffice Draw, a vector-based drawing program; contains default drawing elements that can be used as the basis for creating new .SXD files; enables users to create multiple Drawings with a similar look and feel.
.SC4 File Extension SimCity 4 Saved File Game Electronic Arts Binary Game File created by SimCity 4, a simulation Game where players build cities; stores the terrain, buildings, and roads for a new city that is developed by the player in the Game; can be a small, medium, or large size city.
.SNF File Extension Starry Night Pro Document Misc Simulation Curriculum Unknown Document created by Starry Night Pro, an astronomy application used to observe constellations; contains a viewing preference that alters the view of the sky, planets, and galaxies; includes gaze, zoom, viewing location, time and date, and time flow rate data.
.STORY File Extension Storyist Document Text Storyist Software Binary Document created by Storyist, a story writing tool created for novelists and screenwriters; saves written text as well as layout information, Notes, and chapter outline information; helps authors track the plot, characters, and setting information along with the script.
.SCRIV File Extension Scrivener Document Text Literature and Latte Binary Document created by Scrivener, a writing studio used for composing novels, research papers, and scripts; saves the written text, layout structure, and outline of the Document; also enables writers to save a conceptual layout of ideas alongside the written content.
.SCRIVX File Extension Scrivener XML Document Text Literature and Latte XML Document created by Scrivener, a tool used by writers for composing scripts, novels, and other Documents; stores the written text as well as Document layout and structure information in an XML Format">XML Format; can also include a layout of concepts alongside the written content.
.SPD File Extension Form·Z Suspended Render File Misc AutoDesSys Unknown File created by form·Z, a 3D Modeling application often used for creating building and site construction models; stores the state of a scene rendering job and is created when the user pauses a rendering job and saves the progress.
.SKETCH File Extension Sketch Drawing Vector Image Bohemian Coding Binary Vector graphics file created by Sketch, a vector drawing program for Mac OS X; saves drawn objects using multiple layers; supports Documents of infinite size; used for digital art and other graphics.
.SJD File Extension Scrapbook Factory Journal File Page Layout Nova Development Unknown File created by Scrapbook Factory Deluxe, a program used for creating personal scrapbooks; saves a multi-page journal created in the software; can include photos, template layouts, and other design elements; may be printed to a computer or published to a Document when complete.
.SMP File Extension SmartMusic Performance File Audio MakeMusic Unknown Music File used by SmartMusic, a music practice application for band, orchestra, and voice; saves an accompaniment that can be used for practicing solos and other musical parts; includes the sheet music information and can be used for assessment; replaced by the .SMPX in Finale 2014.
.SHY File Extension ShyFile Encrypted File Encoded Dr. Bootz Unknown Encoded file that contains highly secured files or folders encrypted with ShyFile, an encryption program with a proprietary algorithm offering a symmetric depth of encryption of up to 6,144-bit; can be used to encrypt important Word and Excel Documents and generate secure Web pages and e-mail attachments.
.SPDF File Extension Sealed PDF File Encoded Oracle Binary Protected .PDF file created by Oracle Information Rights Management (IRM) Document protection software; saves the Document in a "sealed," or locked, format and can only be opened by users with sufficient rights; sometimes used by online textbook vendors for protecting the distribution of purchased digital textbooks.
.SXW File Extension StarOffice Writer Document Text Oracle Binary Word processing Document originally created by StarOffice Writer, the word processor included with StarOffice suite; based on the OpenDocument XML Format">XML Format and is compatible with Apache OpenOffice (formerly OpenOffice.org) Writer, the successor to StarOffice Writer.
.SET File Extension Alpha Five Set Data Dictionary File Developer Alpha Software Unknown Set Dictionary file created by Alpha Five, an IDE that enables users to develop Web, desktop, and mobile applications; contains a list of all the forms attached to the set and a record entry for every linking definition; created along with .SEM and .SEX linked set files.
.SAFETEXT File Extension SafeText File Text N/A Unknown Password-protected text Document; encrypted so other people cannot read it; may also use the .SAF extension
.SDT File Extension Electronic Arts Sound Data File Audio Electronic Arts Binary Audio archive file used by older Games published by Electronic Arts, including Dungeon Keeper 2 (DK2), Theme Park World, and the Formula One (F1) series Games; contains a collection of compressed Audio Files, which may be stored in an MPEG-2 format.
.SEO File Extension SEO Note File Data SEO Note Unknown Notes file created with SEO Note, a freeware personal and business information management program; allows data to be stored in text, rich text, or HTML formats and may include multiple Documents in a single file.
.SHS File Extension Microsoft Scrap File Misc Microsoft Binary File created by Microsoft Word and Excel when a user drags and drops selected Document text onto the desktop; contains a copy of the highlighted contents in its native Document format; used to copy portions of a Document for insertion into another Document.
.SHTM File Extension HTML Server Side Include File Web N/A Text Web page that can reference other files on the Web Server; similar to a standard HTML Document, but can access other files on the Server when loaded; allows a standard HTML file to be somewhat dynamic.
.SMZ File Extension SMath Studio Compressed Document Data SMath Zip File created by SMath Studio, a math program that provides a paper-like interface; saves the same mathematical data as an .SM file (SMath Studio Document), but compresses it with Zip compression to reduce the file size.
.SAM File Extension LMHOSTS Sample File Text Microsoft Text Sample of the LMHOSTS setting file used by Microsoft Windows; contains mappings of IP addresses to NetBIOS names of remote Servers a computer will communicate with over TCP/IP;
.SP4 File Extension SuperCard 4 Player Project Data Solutions Etcetera Binary Data File used by SuperCard Player, an application used to execute SuperCard data Documents (.SC4 files); may contain one or more standalone applications, presentations, user interfaces, and other programs.
.ST4 File Extension SuperCard Trial Project File Data Solutions Etcetera Binary Project File created by the trial version of SuperCard, a high-level visual development tool for Mac OS X; stores a data Document, which includes user interface components, program resources, and the logic that drives the interface; enables users to save projects while evaluating the software.
.STW File Extension StarOffice Document Template Text Oracle Binary Document template originally created by StarOffice, the predecessor to Apache OpenOffice; uses an older software file format before Apache OpenOffice adopted the newer .ODT OpenDocument format; used for writing .SDW Documents from the same template.
.STW File Extension StarOffice Document Template Text Oracle Binary Document template originally created by StarOffice, the predecessor to Apache OpenOffice; uses an older software file format before Apache OpenOffice adopted the newer .ODT OpenDocument format; used for writing .SDW Documents from the same template.
.SXM File Extension StarMath Formula Misc Oracle Binary Math formula originally created by StarMath but still supported by Apache OpenOffice Math (previously part of OpenOffice.org), the successor to StarMath; saves a mathematical formula using an older file format before Apache OpenOffice adopted the OpenDocument specification.
.SHB File Extension Windows Document Shortcut Executable Microsoft Unknown Shortcut that opens a specific Document in Windows when double-clicked; executed by the Windows Shell Scrap Object Handler (shscrap.dll); similar to a .LNK file, but not as commonly used; also known as a "Windows Shortcut into a Document."
.SDO File Extension Signed Document Encoded Signere.no Text Document created by Signere.no, a secure signature Database; contains a signed Document that indicates who signed it and when the signature was written; can be viewed through their portal or downloaded from Signere.no.
.SEQU File Extension Adobe Acrobat Sequence File Settings Adobe Systems Unknown Batch sequence file used by Adobe Acrobat, a program used to create and edit PDF Documents; contains a sequence of actions that can be automated by the software.
.SK1 File Extension sK1 Vector Graphic File Vector Image sK1 Project Unknown Drawing Document created by sK1, an illustration program for Linux; contains a vector graphic, which uses paths rather than a grid of pixels to represent drawn objects; used for storing logos, brochures, maps, and other illustrations.
.ST45 File Extension SuperCard Trial Project File Data Solutions Etcetera Binary Project File created by the trial version of SuperCard, a high-level visual development tool; stores a data Document, which includes user interface components, program resources, and the logic that drives the interface; enables users to save projects while evaluating the software.
.SP45 File Extension SuperCard Player File Data Solutions Etcetera Binary Data File used by SuperCard Player, an application used to execute SuperCard data Documents (.SC45 files); associated with the SuperCard Player application by default, but has the same format as a SC45 project file; used for storing presentations, user interfaces, standalone applications, and other programs.
.SXG File Extension Apache OpenOffice Master Document Text Oracle Binary Large Document created by Apache OpenOffice (formerly OpenOffice.org), a free, cross-platform productivity application suite; may contain a table of contents, page text, formatting, graphics, spreadsheets, and other Document materials; used for storing books or long reports.
.SKIM File Extension Skim Notes File Data Skim Unknown File created by Skim, a PDF reading application; saves Notes written by the user for a .PDF file; saved separately from the PDF file and allows the user to save annotations for a Document.
.SDOC File Extension Satra Khmer Document Text Driver-TC group Binary Document created by Satra Khmer, a program used for protecting Document text; contains text that has been transposed from regular text to Satra text using the proprietary Transposition System; used for storing sensitive information.
.SECURE File Extension Septium Secure Document Misc Septium Binary Document format used by software applications developed by Septium, a company that develops mobile and Web applications; used for securing Document information so that it can only be viewed by authorized users.
.SGZ File Extension SigzaLock Encrypted File Encoded Sigza Authentication Systems Binary File created by SigzaLock encryption software; stores an encrypted version of a file, such as a Word (.DOCX) or PowerPoint (.PPTX) Document, and can only be decrypted by SigzaLock software; used for securely storing or transferring files.
.TEX File Extension LaTeX Source Document Text N/A Text Document prepared by LaTeX, a high-quality typesetting system; can include text, symbols, mathematical expressions, and graphics; commonly used in computer science, electrical engineering, and physics for typesetting articles, books, and other publications.
.TXT File Extension Plain Text File Text N/A Text Standard text Document that contains unformatted text; recognized by any text editing or word processing program; can also be processed by most other software programs.
.THMX File Extension Office 2007 Theme File Settings Microsoft Binary Theme that can be applied to a Document or presentation created with Microsoft Office 2007 or later; contains pre-defined colors, fonts, and formatting; typically used as a template for creating multiple files with a similar look and feel.
.TMV File Extension TextMaker Template Text SoftMaker Software Binary Document template created by TextMaker, the word processor included with SoftMaker Office; can be used for making TextMaker Documents (.TMD files) from the same template; uses a proprietary format but can be converted to the Microsoft Word .DOTX format in TextMaker.
.TAX2010 File Extension TurboTax 2010 Tax Return Data Intuit Binary Electronic tax return Document created by TurboTax 2010, a United States tax preparation and filing application; contains 2010 tax forms and data entered by the user; can be validated and e-filed using the software once the tax data is complete.
.T2D File Extension TouchDraw Document Page Layout Elevenworks Unknown Drawing Document created and used by TouchDraw, a vector diagramming and drawing program; stores a drawing, flow chart, diagram, floor plan, or graph; may include Shapes, text, images, and other figures.
.TEMPLATE File Extension Apple Pages Template Text Apple Binary Document template created by Pages, a word processing application for Mac OS X; contains pre-defined page elements and styles used for creating a new Document; enables users to author .PAGES Documents with the same properties.
.TCR File Extension Psion Series 3 eBook File eBook Psion Teklogix Binary eBook created in the TCR format, which was originally used by the older Psion Series 3 palmtop devices developed in the 1990s; stores the eBook text and formatting in a proprietary format used internally by the Psion device.
.TMD File Extension TextMaker Document Text SoftMaker Software Binary Document created by TextMaker, a word processing application that is part of SoftMaker Office; supports text, images, drawn objects, and page formatting properties; used to store authored Documents.
.TPD File Extension TreePad 7 Database File Data Freebyte.com Binary File created by TreePad 7 or later, a personal information manager; stores information that is structured as a hierarchy of "nodes," each of which stores Document content such as text, images, hyperlinks, structured data, and other personal content.
.TEXTCLIPPING File Extension Mac OS X Text Clipping File Text Apple Binary Text File created in Mac OS X by dragging highlighted text to the desktop; stores the selected text as well as the formatting information, including font styles, tables, and bullets and numbering; often used for saving text fragments from Web pages and other Documents.
.T3D File Extension Unreal Engine 3D Object File 3D Image Epic Games Text File used by the Unreal Engine, a program that allows to create multi-player first person shooter Games; contains a text list of Unreal map objects, also known as map actors; used to describe different objects and place them in an Unreal map.
.TFM File Extension TeX Font Metric File Font N/A Unknown Font File created for typesetting fonts in TeX and LaTeX Documents; does not contain the font glyphs (characters) themselves, but contains information about a font, such as the height and width of the glyphs; required by TeX typesetting and allows a font in a separate file to be typeset in a TeX Document.
.TEC File Extension TECkit Compiled Mapping File Misc SIL International Binary File created by TECkit (Text Encoding Conversion toolkit), a program used for conducting text conversions; saves the compiled version of a text mapping that was specified in a Plain Text .MAP file; sometimes used in conjunction with LaTeX technologies to convert characters on the fly when generating LaTeX Documents in different Languages.
.TLD File Extension Tag Library Descriptor File Developer N/A XML Developer File used for Java Server Page (JSP) development projects; saved using XML Format">XML Formatting and contains descriptions of tags, which are used to markup JSP Documents; describes the supported tags in a corresponding tag library.
.TNSP File Extension TI-Nspire PublishView Document Misc Texas Instruments Binary Calculator program created by TI-Nspire, a desktop application used for creating programs for TI-Nspire graphing calculators; saves a program published in a format that can be run in a Web browser by the TI-Nspire Document Player, which is available at the Texas Instruments website.
.TK3 File Extension TK3 Multimedia eBook eBook Night Kitchen Unknown Electronic book format that supports text, images, sounds, and video; can be used to create interactive Documents and educational projects, such as reference guides, catalogs, and presentations.
.TPL File Extension Document Template Misc N/A Unknown Template file created by various types of applications; saves the default settings for the Page Layout, written text, and other information for a Document; used for generating Documents with a similar style and structure.
.TEXT File Extension Plain Text File Text N/A Text Document containing unformatted ASCII text; used for Documents that do not require formatting, which helps reduce the file size; for example, log files and readme files are often Plain Text Documents; they can be opened in both basic text editors and advanced word processing programs.
.TTX File Extension Trados TagEditor File Misc SDL Unknown Translated Document generated by Trados translation software; includes tags that define the text formatting and structure of the page; TTX files can be created from .HTML, .JSP, .ASP, .XSL, .XML, .SGML, .RTF, and .DOC Documents, as well as several other file types.
.TOTALSLAYOUT File Extension Totals Invoice Layout File Page Layout Kedisoft Binary Page layout file used by Totals, an invoice preparation program; saves a Document layout for generating an invoice and contains template fields (business name, address, client information, etc.) that are filled in by the software when creating a report.
.TT2014STATE File Extension TurboTax 2014 State Tax Form Data Intuit Unknown State tax form used by TurboTax 2014 tax preparation software; may include one or more tax forms for a specific U.S. state; linked to a .TAX2014 tax return Document and may be referenced by TurboTax when completing a tax return.
.TM File Extension TeXmacs Document Text GNU Unknown Structured text Document created with TeXmacs, a graphical LaTeX editor developed for Unix systems; may include text, graphics, mathematical formulas, graphs, and interactive content.
.T2K File Extension Teach2000 Document Data Basement.nl XML Test Document created by Teach2000, a memory training application; saves a list of questions and answers in an XML Format">XML Format; may include free form or multiple choice questions.
.TXTRPT File Extension CommScope Teletilt Control System Report Data CommScope Binary File generated by ATC Lite, the software bundled with Teletilt Control System antennas (e.g., the ATC200-LITE-USB model); stores a report generated by the antenna and saves it in the Microsoft Word Document format so that it can be opened with any Word-compatible software.
.UUE File Extension Uuencoded File Encoded N/A Text File encoded with uuencode, a Unix program that converts binary files to a text format; stores the encoded textual representation of a binary file; commonly used for emailing Documents so the file does not become corrupted; must first be decoded to open the original file.
.UWL File Extension User Word List File Data Corel Unknown File used by spell checker programs in Corel WordPerfect and Novell GroupWise word processor programs; contains a list of user-added words that are recognized and validated by the spell checker in Document text.
.UOT File Extension Uniform Office Document Text N/A Binary Document created in the Uniform Office Format (UOF), an open standard developed for Chinese office productivity applications; uses an XML Format">XML Format to describe the Document and is compressed to reduce the file size; can be opened by OpenOffice.org (OOO) and OOO variants.
.UOP File Extension Uniform Office Presentation Data N/A Binary Presentation file created in the Uniform Office Format (UOF), an open Document format created for Chinese office productivity applications; uses XML to describe the presentation and stores the presentation as a compressed archive.
.UOS File Extension Uniform Office Spreadsheet Spreadsheet N/A Binary Spreadsheet file created in the Uniform Office Format (UOF), a Chinese-developed file format for office productivity applications; saves the spreadsheet using XML and compression and therefore is similar to but not compatible with the Microsoft Office Open XML (.XLSX) and OASIS OpenDocument (.ODS) standards.
.UTF8 File Extension Unicode UTF8-Encoded Text Document Text N/A Text Text Document that uses Unicode UTF-8 (8-bit Unicode Transformation Format) encoding; can be used for English and many other Languages, including support for Asian characters; backwards compatible with ASCII.
.ULF File Extension Universal List File Data N/A Unknown Data File formatted in Universal List Format (ULF); contains a list of elements similar to an .XML Document; often used by Geographic Information Systems (GIS) applications to store coordinates and vertexes.
.UOF File Extension Uniform Office Document Text N/A Binary Document created in the Uniform Office Format (UOF), a file format developed for Chinese office productivity applications; uses XML Format">XML Formatting and compresses all Document contents in a file container with the ".uof" extension.
.UFO File Extension Ulead File Object Raster Image Ulead Binary Raster image primarily created by Ulead PhotoImpact (now Corel PhotoImpact), but also recognized by other photo and video editing applications developed by Ulead; may include multiple editing layers, similar to a Photoshop (.PSD) Document.
.UPF File Extension MicroStation User Preferences File Settings Bentley Systems Binary Settings File created by MicroStation, a 3D CAD modeling tool; saves user preferences such as hotkeys, workspace settings, and the settings specified in the Workspace → Preferences dialog; enables preferences to be remembered.
.VOR File Extension StarOffice Template Misc Sun Microsystem Unknown Template for creating a new StarOffice or OpenOffice.org Document; used by multiple StarOffice/OpenOffice.org programs, including Writer (word processing), Calc (spreadsheets), and Impress (presentations).
.VDO File Extension Heathen Virus File Executable N/A Unknown If file name is HEATHEN.VDO, file may be a virus that infects Word Documents (.DOC files); may infect PE.EXE files in Windows 95; should be deleted or removed by an anti-virus program.
.VW File Extension Volkswriter Text File Text Lifetree Software Unknown File created by Volkswriter, a once-popular word processing program for the IBM PC in the 1980s; contains Document text created in Volkswriter; can be opened in Corel WordPerfect.
.VDJSEND File Extension VirtualDJ Send File Misc Atomix Productions Text Data File used by VirtualDJ, an audio and video mixing software featuring the BeatLock engine, which provides automatic loop and beat synchronization; saved in a Plain Text format and contains audio information; saved to the [user]My DocumentsVirtualDJ directory in Windows.
.WPS File Extension Microsoft Works Word Processor Document Text Microsoft Binary Document created with Microsoft Works word processing software; similar to a Microsoft Word (.DOC) Document, but does not include advanced formatting options and macros that a Word Document may contain.
.WPS File Extension Microsoft Works Word Processor Document Text Microsoft Binary Document created with Microsoft Works word processing software; similar to a Microsoft Word (.DOC) Document, but does not include advanced formatting options and macros that a Word Document may contain.
.WPD File Extension WordPerfect Document Text Corel Binary Text Document created by Corel WordPerfect, a popular word processor; may contain formatted text, tables, drawn objects, and images; stored in a proprietary Corel format, but can be exported to other formats from within WordPerfect.
.WPD File Extension WordPerfect Document Text Corel Binary Text Document created by Corel WordPerfect, a popular word processor; may contain formatted text, tables, drawn objects, and images; stored in a proprietary Corel format, but can be exported to other formats from within WordPerfect.
.WPD File Extension WordPerfect Document Text Corel Binary Text Document created by Corel WordPerfect, a popular word processor; may contain formatted text, tables, drawn objects, and images; stored in a proprietary Corel format, but can be exported to other formats from within WordPerfect.
.WDF File Extension Workshare Compare DeltaFile Data Workshare Binary Document created by Workshare Compare, an application used for Document comparison; stores a Document that contains the comparison, or redline, between two versions of a Document; used for Document collaboration in office environments.
.WWF File Extension World Wide Fund Non-Printable Document Page Layout WWF International Binary Document created by SAVE AS WWF, a program used to create .PDF Documents that cannot be printed; may contain the contents of any electronically printable Document; used for distributing "green-friendly" Documents; created using the print dialog option "SAVE AS WWF."
.WPT File Extension WordPerfect Template Text Corel Binary Template created by WordPerfect, a word processing application that is part of the WordPerfect Office suite; stores a pre-formatted Document that can be used to create WordPerfect (.WPD) Documents; enables users to create multiple Documents with a similar look and feel.
.WPT File Extension WordPerfect Template Text Corel Binary Template created by WordPerfect, a word processing application that is part of the WordPerfect Office suite; stores a pre-formatted Document that can be used to create WordPerfect (.WPD) Documents; enables users to create multiple Documents with a similar look and feel.
.WPT File Extension WordPerfect Template Text Corel Binary Template created by WordPerfect, a word processing application that is part of the WordPerfect Office suite; stores a pre-formatted Document that can be used to create WordPerfect (.WPD) Documents; enables users to create multiple Documents with a similar look and feel.
.WGT File Extension IMPS Data File Data N/A Unknown Contains Census Bureau data recorded by IMPS (Integrated Microcomputer Processing System) survey and census data processing software
.WTT File Extension Write! Document Text HamsterCoders Unknown Text Document format created and used by Write!, a free Windows text editor; supports rich text; includes several types of text formatting, such as italics and bold type; can be exported as a .PDF, .ODT, .TXT, and .MDOWN file.
.WMGA File Extension Web Manga Document Page Layout Manga Reader Zip Manga Document used by Manga Reader, an application used to read electronic print cartoons and comic books; stores the structure of the manga Document; includes URL references to page content (text, graphics, etc.) instead of the page content itself; used for distributing manga comics.
.WEBDOC File Extension Box.net Web Document Text Box.net Binary Online Document created using Zoho Editor, a Web browser application used to edit Documents for the Box.net file sharing service; saves the Document in a proprietary Box.net format that is only editable with the online Zoho Editor; can be viewed with the Box.net offline Box Sync application.
.WXS File Extension WiX Source File Developer Outercurve Foundation XML Source file created by Windows Installer XML (WiX) toolset, a Windows installer developing program; XML Document containing one root element (<Wix>); a collection of strings for localizing a product into a specific culture; similar to .CPP files.
.WMZ File Extension Compressed Windows Media Player Skin Settings Microsoft Zip Preinstalled or custom skin that changes the appearance of the Windows Media Player interface; contains a combination of graphics and JScript code that defines the behavior of each element in the skin; compressed using ZIP compression.
.WPW File Extension WinDev Mobile Window File Developer PC SOFT Unknown Developer File created by WinDev, an IDE used for developing Windows and mobile applications; saves a program window, which acts like a dialog box or output view for the final program; can contain text, fields, buttons, and other visual elements.
.WPK File Extension Nero Wave Editor File Audio Nero Unknown Describes a sound file edited with Nero Wave Editor, part of the the Nero CD/DVD disc authoring suite; contains edits made to the audio file, but not the actual audio itself.
.WSH File Extension Windows Script Host Settings Executable Microsoft Text Text Document that contains properties and parameters for a certain script, i.e. a .VB or .VBS file; used for customizing the execution of certain scripts; requires WScript or CScript to run, both of which are included with the Windows operating system.
.WBK File Extension WordPerfect Workbook Text Corel Unknown Workbook Document created by Corel WordPerfect (part of WordPerfect Office).
.WBK File Extension WordPerfect Workbook Text Corel Unknown Workbook Document created by Corel WordPerfect (part of WordPerfect Office).
.WPA File Extension ACT! Word Processing Document Text The Sage Group Unknown Text Document format used by ACT! contact management software, versions 3 and later.
.WPG File Extension WordPerfect Graphic File Vector Image Corel Binary Graphic created by WordPerfect, a word processing program; can contain both vector and bitmap image data and may include up to 256 colors; may also contain Encapsulated PostScript (.EPS) information; often used for clipart images that are embedded into word processing Documents.
.WWD File Extension Works Wizard File Misc Microsoft Unknown Wizard that guides the user through a series of steps to create a customized Works Document; may be a text Document, flyer, spreadsheet, calendar, or other type of file.
.WP7 File Extension WordPerfect 7 Document Text Corel Unknown Word processing Document created by WordPerfect 7.x; can be opened with Corel WordPerfect 7 or later.
.WRI File Extension Windows Write Document Text Microsoft Binary Text Document created with Windows Write, a basic word processor that came with early versions of Windows through Windows 3.1; may contain styled text and page formatting information.
.WP File Extension WordPerfect Document Text Corel Unknown Word processing Document created by Corel WordPerfect, a popular word processor for Windows; may contain text, images, forms, and other data.
.WPE File Extension openCanvas 1.1 Event File Raster Image Portalgraphics Unknown File created by openCanvas 1.1, a free drawing program designed for use with drawing tablets; saves the stroke events used to create the drawing so that it can be recreated or reanimated in the software.
.WP5 File Extension WordPerfect 5 Document Text Corel Binary Word processing Document created by WordPerfect 5.x for DOS, a highly successful version of WordPerfect; included support for tables within the Document.
.WP4 File Extension WordPerfect 4 Document Text Corel Unknown Word processing Document created by WordPerfect 4.x for DOS, the first version to include automatic paragraph numbering; overtook WordStar as the most popular word processor for the DOS platform.
.WLP File Extension Worldlabel.com Label Designer File Page Layout Worldlabel.com Binary Document created by Worldlabel.com Label Designer, a program used for designing and printing labels for CDs, addresses, envelopes, and other media; stores the label Document dimensions, design layout, and data; supports pictures, bar codes, drawn Shapes, counters, and various text styles.
.WBXML File Extension WAP Binary XML File Web Open Mobile Alliance Binary File created in the WAP (Wireless Application Protocol) Binary XML (WBXML) format, a compact binary file format used for transmitting XML Documents over wireless mobile networks; allows mobile devices to preserve XML Format">XML Formatting while reducing the transmission time.
.WP6 File Extension WordPerfect 6 Document Text Corel Binary Word processing Document created by WordPerfect 6.x for DOS, the first version of WordPerfect to include a graphical editing mode, which displayed how the Document would look when printed; may contain text styles such as bold, underlined, and italics, which were not possible in previous versions of the program.
.WSD File Extension WordStar Document Text Micropro International Unknown Document created by WordStar, a word processing program for DOS used heavily in the 1980s; contains Document data and Page Layout formatting; used to store text using the WYSIWYG DOS-based editor.
.XML File Extension XML File Data N/A XML XML (Extensible Markup Language) data file that uses tags to define objects and object attributes; formatted much like an .HTML Document, but uses custom tags to define objects and the data within each object; can be thought of as a text-based Database.
.XSL File Extension XML Style Sheet Data N/A XML Defines the style of text, tables, and other objects within a XML Document; similar to a .CSS file used by .HTML Documents; can be opened with FileMaker or any program that supports XML style sheets.
.XSLT File Extension XSL Transformation File Data N/A XML Text File similar to an .XSL Document that contains XML style transformation information; used for transforming XML Documents into a standard output format, such as a text Document or an .HTML Web page.
.XSD File Extension XML Schema Definition Developer N/A XML Defines what elements and attributes may appear in an XML Document; also defines the relationship of the elements and what data may be stored in them; written in the W3C XML Schema Language.
.XFDF File Extension Adobe Acrobat XFDF File Data Adobe Systems XML XML Forms Data Format (XFDF) file created by Adobe Acrobat, a PDF authoring application; stores descriptions of page form elements and their values, such as the names and values for text fields; used for saving form data that can be imported into a PDF Document.
.XFD File Extension FormFlow 99 Form Data File Data JetForm Unknown File created in the FormFlow 99 format, which was developed by JetForm; contains page form element information, such as the names and values of text fields; used for storing form data that can be imported into a PDF Document.
.XV3 File Extension Lattice XVL Geometry File CAD Lattice Technology Binary File created by Lattice Technology programs, which are used to create Digital Mock Up (DMU) Documentation of 3D Models; contains a model, including its three-dimensional geometry and appearance; used to save and load 3D design data.
.XTP File Extension xTime Project Document Data adnx Unknown Project accessed by xPlan, a project management application; similar to the .PJ2 and .PJM file; created by the app4mac xTime Project program, which became xPlan; contains project data input such as the budget, project tasks, days off, and task duration.
.XBRL File Extension XBRL Document Data XBRL International XML Document written in eXtensible Business Reporting Language (XBRL), an XML-based">XML-based Language; contains business and financial data, such as balance sheets, ledgers, and financial statements; used for communicating and exchanging business performance reports; commonly uses the .XML extension but occasionally appears with the XBRL extension.
.XBDOC File Extension Xiosis Scribe Document Text Xiosis Binary Document created by Xiosis Scribe, a word processing program; supports formatted text, page formatting, images, and tables; can be edited with the unique "next generation" toolset and user interface provided with the software.
.XWP File Extension Xerox Writer Text Document Text N/A Unknown Text File created with Xerox Writer, one of the original word processing programs.
.XDP File Extension XML Data Package Data Adobe Systems XML XML file created in the XML Data Package format, a file format developed by Adobe Systems for packaging PDF data into XML files; contains the entire PDF Document contents including form and template data; may also include character-encoded sections for binary content.
.XIF File Extension ScanSoft Pagis File Page Layout Nuance Communications Binary XIF (eXtended Image Format) file originally created for the ScanSoft Pagis scanning software; designed as an extension to the .TIFF format for storing text Documents as images; separates the image into four layers: Text layer for optical character recognition (OCR) Layer for text colors Color image segments layer Background tint layer NOTE: ScanSoft is now Nuance Communications. The XIF file format is still supported by some Nuance applications.
.XFN File Extension Ventura Printer Font Font Corel Unknown Printer font file used by the Corel Ventura Publishing Application, a program that can transform complex Documents and XML files into visually rich publications; the XFN font format ensures accurate printing of text and is supported by Xerox printers.
.XPD File Extension PlayStation Store PSP License File Game Sony Unknown License file downloaded along with content from the Sony PlayStation Store; used for Digital Rights Management (DRM|rm) and required to transfer Games and other downloaded files to the PlayStation Portable (PSP) device.
.XYW File Extension XYWrite for Windows Document Text N/A Unknown Text Document created by XYWrite for Windows 3.x/4.x
.XYP File Extension XYWrite Plus Document Text N/A Unknown Text Document created by XYWrite Plus, a a word-processing software program from The Technology Group.
.XY3 File Extension XYWrite III Document Text N/A Unknown Text Document created by version 3 of XYWrite
.XDL File Extension Oracle Expert Definition Language File Text N/A Unknown Defines the classes and structures of other files created by the Oracle Expert Database optimization program; created whenever a Database, environment, instance, schema, or workload data is exported by Oracle Expert.
.XWF File Extension OmniPage Workflow File Misc Nuance Communications Unknown Workflow file created with OmniPage OCR software; used for streamlining Document conversions by automating scanning, converting, and saving processes; may be a pre-built workflow or created by the user with the Workflow Assistant.
.XDW File Extension Fuji Xerox DocuWorks File Page Layout Fuji Xerox Unknown Proprietary image format used by Fuji Xerox DocuCentre scanners and copiers; may include both images and text, as well as links to Web pages or other Documents; scanned text may be converted to actual characters using DocuWorks OCR technology and searched like a word processing Document.
.XMP File Extension Extensible Metadata Platform File Misc Adobe Systems Unknown Contains metadata that describes a file, such as an image, Database, or Web Document; may include a file description, title, keywords, author and copyright data, and other information; saved in a standard format that can be searched by XMP-compatible applications.
.XMCT File Extension Mathcad XML Worksheet Template Data PTC XML Template file created by Mathcad, a program used for engineering calculations; saves a worksheet template that can be used for creating multiple .XMCD Documents from the same starting point.
.XV0 File Extension Lattice XVL Structure File 3D Image Lattice Technology Binary File created by Lattice Technology programs, which are used to Document 3D designs; contains a three-dimensional model, including its structure and appearance; stored in a highly compressed format.
.XY File Extension XYWrite Document Text XyQuest Text Text Document created by XYWrite, an early word processing program for Windows; contains Plain Text markup delimited by > symbols.
.YBD File Extension YobiDrive Link File Misc EZC Group Binary File used by YobiDrive, a file sharing service that provides secure online storage locations for files and folders; saves a link to a file or folder available on a YobiDrive; used as a shortcut to a remote file stored on a YobiDrive, such as a Document or a video.
.ZW File Extension Chinese Text File Text N/A Unknown Text Document containing Chinese characters; uses ASCII/Chinese Character Encoding; similar to an .HZ file, but uses a different coding style; also known as a HXWZ file.
.ZABW File Extension Compressed AbiWord Document File Text AbiSource Binary Compressed Document created by AbiWord, an open source word processor; contains an .ABW Document that has been compressed using Gzip compression; differs from an .BZABW file, which is compressed with Bzip2 compression.
.ZDB File Extension Zimbra Database File Data Zimbra Binary Email data file created by Zimbra Connector for Microsoft Outlook (ZCO), a plug-in for Outlook used to manage Zimbra email accounts; saved in the Outlook .PST format but uses the ".zdb" extension instead; can be imported into an Outlook profile by first renaming the file extension to ".pst."
.ZVPL File Extension Visual Paradigm License File Misc Visual Paradigm Binary Software license file used by the Visual Paradigm Suite, a suite of diagramming and Documentation applications; saves registration information for one or more programs; enables users to activate trial and purchased versions of the software.
.ZFX File Extension ZipForm File Page Layout ZipLogix Binary File created by ZipForm, a program used to facilitate real estate transactions online; contains real estate forms and other Documentation; used for sending real estate information over email.
.ZGM File Extension Zenographics Image File Vector Image Zenographics Binary Image created by Zenographics graphic rendering software programs; typically used for storing prepared images for print; stored in a format designed to increase the speed at which office Documents are printed.
.BAK File Extension Firefox Bookmarks Backup Backup Mozilla Unknown Backup of the Firefox bookmarks file; can be used to replace saved bookmarks in case the main bookmarks file becomes corrupted; automatically generated by the Firefox Web browser; typically named "bookmarks.bak"
.BOOK File Extension iBooks Author Document Data Apple Binary Book design project created by iBooks Author, a program used for authoring digital books for the Apple iPad; stores the sections and chapters of an iBook; can be exported to the .IBOOKS format and directly uploaded to an iPad, or may be published to the Apple iBookstore using the .ITMSP format.
.BIB File Extension BibTeX Bibliography Database Text N/A Text Text Document containing a list of references formatted using BibTeX formatting; often used in combination with LaTeX (.TEX) Document preparation; allows for bibliographies to be searched and published using standard commands.
.BLG File Extension Windows Binary Performance Log File Data Microsoft Binary Log file created by Windows performance tracking tools; contains a history of the computer resource utilization and performance, such as the amount of CPU, memory, and disk resources used by different programs; used to analyze Server and computer loads and discover resource bottlenecks.
.BBPROJECTD File Extension BBEdit Project Document Developer Bare Bones Software Unknown Project Document created by BBEdit, a source code text editor and development tool for Mac; includes references to project source code and resource files; enables programmers to organize development project files during software development.
.BBCD File Extension BobCAD-CAM Document CAD BobCAD-CAM Unknown CAD Document created by BobCAD-CAM, a CAD design application for Windows; saves a manufacturing part design and may include various geometry and dimensioning data; may also include instructions for milling the part.
.BZABW File Extension Compressed AbiWord Document Text AbiSource Binary Compressed Document created by AbiWord, a free, cross-platform word processor; contains a .ABW Document compressed with Bzip2 (.BZ2 files) compression; helps reduce the size of an ABW Document, which is stored using XML Format">XML Formatting.
.BMK File Extension PowerDVD MovieMark File Video CyberLink Unknown Bookmark file created by PowerDVD, an advanced video player for HD and 3D Movies; contains a bookmark, called a MovieMark, for a video, including a timestamp, video information, and user comments.
.BRX File Extension BREW Application Resource File Developer Qualcomm Unknown Deprecated application resource file used by older BREW 3.x and 4.x mobile application development programs; contains descriptions of assets used by the application; replaced by the newer .CAR format.
.BLK File Extension AutoCAD Block Template File CAD Autodesk Unknown Attribute extraction template used by AutoCAD, a 2D and 3D CAD design and Documentation application; stores selected drawing elements used for publishing a drawing to a .PDF, .DWF, or .DWFX format; specifically stores the drawing blocks and their properties.
.BLK File Extension AutoCAD Block Template File CAD Autodesk Unknown Attribute extraction template used by AutoCAD, a 2D and 3D CAD design and Documentation application; stores selected drawing elements used for publishing a drawing to a .PDF, .DWF, or .DWFX format; specifically stores the drawing blocks and their properties.
.BKZ File Extension FileFort Backup File Backup NCH Software Binary Backup file created by FileFort, a program used for backing up data to discs, external drives, and remote storage locations via FTP or a Google Drive; can be double-clicked to restore the backed up files to their original location.
.BPM File Extension Bizagi Process Modeler CAD Bizagi Unknown File created by Bizagi Process Modeler, a business process modeling and Documentation application; contains processes that consist of diagram Shapes, images, arrow connectors, etc.; referred to as a model and may contain one or more diagrams.
.BTD File Extension Business-in-a-Box Document Text Biztree Binary Document created by Business-in-a-Box, a program used for authoring business Documents; often is created from one of the numerous templates included with the software; can contain legal notices, human relations memos, financial Documents, and many other Document types.
.BIBTEX File Extension BibTeX Bibliography Database Text N/A Text Document containing information in the BibTeX format; contains one or more references and enables bibliographies to be searched and published using standard commands.
.BRF File Extension Braille Ready Format File Data N/A Text Document saved in the ASCII-based Braille Ready Format (BRF); encodes contracted Braille characters using a numbering system; can be displayed on a Braille embosser or printed on a Braille printer; may also be spoken by software that supports Braille to speech functionality.
.BDT3 File Extension BEEDOCS Timeline 3D 3 Document Video BEEDOCS Binary Document created by BEEDOCS Timeline 3D version 3, an application used for creating interactive 3D historical timelines; stores historical events, each of which is mapped on the timeline; can include pictures, dates, sounds, video, Notes, and other event information; can be shared on the Web, through ITunes or YouTube video, or as an insert in an Apple Keynote presentation.
.BRD File Extension EAGLE Circuit Board File Data CadSoft Unknown CAD file created by EAGLE, an application used for schematic capture and PCB design; created with the EAGLE Layout Editor and used for developing design templates for circuitry; can be saved in the Gerber drill Data Format, which may be used by CAM (computer aided manufacturing) programs.
.BRO File Extension Broadleaf Tree Model 3D Image Onyx Computing Unknown Three-dimensional model of a tree or bush created with OnyxTREE BROADLEAF software; used for modeling broadleaf trees, bushes, and plants; supports lighting effects, shadows, wind settings, and leaf textures.
.BPDX File Extension Business Plan Pro Document Data Palo Alto Software Zip Project File created by Business Plan Pro, an application used for creating business plans; saves information such as the executive summary, company type, market analyses, investments, and financial targets; used in the process of compiling a business plan.
.BRS File Extension RoboHelp Browse Sequence File Data Adobe Systems Text File created by RoboHelp, an application used for creating Windows help Documentation; saves a browse sequence, which allows the help readers to move through a series of help topics; included as part of a RoboHelp project (.XPJ).
.BVD File Extension Bitdefender Vault File Encoded Bitdefender Binary Encrypted virtual drive created by Bitdefender, an antivirus and Internet security application; often stores important and sensitive user Documents, but may store any other kind of file as well; incorporates both encryption and password protection for security.
.BOC File Extension EasyWord Big Document Text E-Press Unknown Document saved with EasyWord, the word processor included with the EasyOffice office suite; used for saving large files created with EasyWord; can also be exported to a .DOC file, which can be opened by Microsoft Word.
.BEAN File Extension Bean Rich Text Document Text Bean Unknown Word processing Document created with Bean, a free word processor for Mac OS X powered by the same engine as Apple Text Edit; supports live word count, text styles, graphics, and custom printed margin settings.
.BST File Extension BibTeX Style Document Misc N/A Unknown Specifies the formatting of a BibTeX (.BIB) Document; referenced by the LaTeX Document and used by the BibTeX program "bibtex" when generating items for the bibliography; may also be used to create HTML output from a BibTeX file.
.BNA File Extension Barna Word Processor Document Text Safe Works Unknown Text Document created with Barna, a word processing program for the Bangla Language; uses the Bangla ("Bengali") font and supports Munir, Bijoy, and Easy keyboards as well as custom keyboard layouts.
.BPF File Extension Baan ERP Document Page Layout Infor Global Solutions Unknown Document generated by Baan ERP (Enterprise Resource Planning) software; specifies the structure and content of the Document in a propritary markup Language; can be printed using the BWPRINT.EXE file included with the Baan software.
.BAK~ File Extension AbiWord Auto-Saved Document Backup AbiSource Unknown Auto-saved Document created by AbiWord, an open source word processor; stores a Backup copy of the currently-open Document; used for recovering Documents if the program unexpectedly shuts down.
.BSK File Extension Bryce Skies File 3D Image DAZ Productions Binary File used by Bryce, a 3D landscape modeling application; contains visual properties for a sky, which can be included in a 3D scene; can be used for setting daytime, nighttime, or sci-fi skies, as well as for creating rainbows and star fields.
.BDT2 File Extension BEEDOCS Timeline 3D 2 Document Video BEEDOCS Binary Document created by BEEDOCS Timeline 3D 2, a program used for capturing timelines and historical events; may include pictures, dates, sounds, video, Notes, and other event information; used for sharing timelines through videos or interactive presentations.
.BLEND2 File Extension Blender Document Backup 2 File Backup Blender Binary Automatically generated Backup file created by Blender, an open source 3D Modeling application; stores a Backup copy of a .BLEND Document from the past save operation two saves ago; contains the saved version prior to the .BLEND1 Backup file, which is the immediate Backup version of the BLEND Document.
.BRK File Extension Brooktrout Fax Document Raster Image Dialogic Binary Fax Document created in the Brooktrout fax format; contains the contents of a fax sent via modem or fax machine; used to store digital copies of faxes.
.CWK File Extension ClarisWorks Document Data Apple Binary Document created by Apples AppleWorks or ClarisWorks productivity suite; can be a word processing document, spreadsheet, or presentation; can still be opened by iWork applications (Pages, Numbers, Keynote), but the file must first be in the AppleWorks 6 format and importing results may vary.
.DWLIBRARY File Extension Paperless Document Library Misc Mariner Software Binary Digital document library created by Paperless, an application used to scan and organize electronic copies of documents; contains a collection of documents that have been scanned from paper copies; also stores metadata that has been captured with Mariners optical character recognition (OCR) technology.
.DVL File Extension Virtual Library File Raster Image Dalim Unknown Image information format used by Dalim Softwares electronic publishing programs; contains one or more pages with keywords, URLs, document structure information and other metadata.
.EXPORTEDUI File Extension Microsoft Office Exported UI Customization File Settings Microsoft XML Customization file used by Microsoft Office, a work document production suite; contains XML code that customizes ribbons in Microsoft Office; exported format to easily share custom tabs, commands, groups, etc. that make up the Microsoft Office UI with other users.
.FREEWAY File Extension Freeway Document Web Softpress Unknown Website document created and used by Freeway Pro, an OS X WYSIWYG app used to create websites; stores information about a website, such as the sites appearance and layout; includes font, background appearance, margins, and links to resources.
.FWACTIONB File Extension Freeway Action Bundle File Plugin Softpress Unknown Action bundle created and used by Freeway Pro, an app that allows users to create websites without having to write any code; contains one or more actions that can be added to a .FREEWAY document in order to add functionality to the website that cant be created through Freeway Pros interface.
.FLKB File Extension Folder Lock Basic Locker File Backup NewSoftwares Binary Encrypted archive, or "locker," created by Folder Lock, an application used for protecting sensitive files; contains a collection of files that can only be opened using the locker password; uses NTFS file system formatting and supports unlimited file sizes; used for backing up personal documents and other sensitive files.
.FWACTION File Extension Freeway Action File Plugin Softpress Text Action file created and used by Freeway Pro, an app that allows users to create websites without having to write any code; contains an action that can be added to a .FREEWAY document in order to add functionality to the website.
.GDOC File Extension Google Drive Document Text Google Text A GDOC file is a document created by Google Docs, an online document editor included with Google Drive. It contains a URL reference to a Google Docs document stored in Google Drive. GDOC documents store text, images, equations, drawings, charts, and tables.
.GALLERYCOLLECTION File Extension SMART Notebook Gallery Collection File Data SMART Technologies Binary Document collection file used by SMART Technologies whiteboard and classroom management applications; contains a document set, which can include clip art, multimedia content, lesson activities, and .NOTEBOOK files; used for distributing packages of classroom lesson content over the Internet.
.GALLERY File Extension SMART Notebook Gallery File Data SMART Technologies Binary Document gallery used by SMART Technologies classroom management applications; can contain clip art, background images, multimedia content and .NOTEBOOK files; used by teachers for organizing classroom materials and creating classroom lectures; also used for distributing content with other teachers or to classroom computers.
.GALLERYITEM File Extension SMART Notebook Gallery Item File Data SMART Technologies Binary Gallery document file used by SMART Technologies classroom management and whiteboard software; contains one or more gallery items from a teachers classroom database; may include clip art images, video, audio, .NOTEBOOK files, or other types of content; used for exporting gallery documents and sharing them over email or the Internet.
.GFORM File Extension Google Drive Form Data Google Text Form document file used by Google Drive, a cloud storage service; links to a Google Form online, which contains a set of input fields that users can fill in; can be double-clicked to open the form in Google Docs (in the users Web browser).
.GTA File Extension Microsoft Groove Tool Archive Misc Microsoft Binary Mini-application created for Microsoft SharePoint Workspace (formerly named Groove), a program used for sharing documents and other content in collaborative environments; can be added to a SharePoint users workspace to customize its functionality; used for distributing tools.
.HFD File Extension HotDocs Form Document Page Layout HotDocs Binary Document created by HotDocs, a software package used for automating document generation; saves form information, fields data (populated answers), and page layout formatting for a digital form; used for legal, insurance, and contracting forms; generated from .HFT templates and filled with user answers.
.HFT File Extension HotDocs Form Template Page Layout HotDocs Binary Document template created by HotDocs, a software package used for document generation; saves a template for a digital form, often for a legal or insurance form; can be published to an .HFD document by filling the fields with user answers.
.HPD File Extension HotDocs PDF Document Page Layout HotDocs Binary Document created by HotDocs, an application used for digital document preparation; saves filled fields (populated answers), labels, and page layout formatting for a digital form; often used for legal or insurance documents.
.HPJ File Extension Help Project File System Microsoft Unknown Help project created with either WinHelp or RoboHelp help authoring software; used for creating program Help documentation; contains information that defines the behavior, look, and content of the Help system.
.HXT File Extension Microsoft Help 2 Table of Contents File Misc Microsoft Unknown File used by Microsoft Help 2.x help document projects; contains information about the help documentations table of contents; enables the help information to be browsed in a structured manner; used for compiling a .HXS help file.
.IWA File Extension iWork Archive File Encoded Apple Binary Archive file format used by the iWork suite; contains serialized components, such as theme style sheets, tables, and metadata, in a Protobuf stream, which is compressed in the Snappy compression format; located inside the Index.zip file in an iWork document bundle.
.IPCH File Extension Intellisense Precompiled Header File Developer Microsoft Binary Developer file used by Microsoft Visual C++, an IDE used for Windows C++ programming; contains precompiled header information used by Intellisense, Microsofts code assistance module used for code hinting, documentation, and autocompletion while the programmer types source code.
.INTERNETCONNECT File Extension Apple Internet Connect Document System Apple Unknown Document created for Apples System Preferences, an application included on the Apple operating system; contains data that assists your computer connect and disconnect to your ISP and to your bluetooth devices.
.JSPF File Extension Java Server Page Fragment Developer Oracle Text Web page source code file written using Java Server Page (.JSP) syntax; contains a fragment of JSP code that does not comprise an entire JSP document; used for abstracting reusable segments of code and statically including them in JSP pages.
.JVSG File Extension Video Surveillance Project CAD JVSG Binary Project file created by JVSGs CCTV (Closed-Circuit Television) system design programs; stores camera locations, camera view angles, bandwidth and hard disk calculations, and other CCTV design information; can be rendered into 3D views for advanced analysis and documentation.
.KES File Extension Kurzweil 3000 Document Text Kurzweil Educational Systems Binary Document created by Kurzweil 3000, a learning assistance application featuring text to speech for students that struggle with reading comprehension; saves a document that has been scanned into the program using OCR technology.
.LFP File Extension IPRO LFP File Data IPRO Tech Text File used by IPRO Techs litigation applications, which are used to generate and review legal documents; saved in a plain text format and contains commands used for loading images from a litigation database; helps construct digital views of images in legal proceedings.
.LYR File Extension ArcView Layer File Misc ESRI Unknown Contains information available in ArcViews layer properties dialog box; may include symbols, display settings, joined table details, definition queries, labeling properties, and annotation display properties.
.LPDF File Extension Localized PDF File Page Layout Apple Binary Multilingual .PDF file, often named About Stacks.lpdf and About Downloads.lpdf, and found on Mac OS X systems; and saved in the Mac OS X package format and stores both the .PDF file as well as data that localizes the document for multiple languages.
.MJD File Extension Adobe Acrobat MIME Encoded Job Definition File Encoded Adobe Systems Binary Package file created by Adobe Acrobat, a PDF editing and publishing program; contains a MIME-encoded archive of PDF documents and a .JDF job ticket file; used for transferring document publishing workflow packages over FTP and email.
.MJDOC File Extension MacJournal Document Misc Mariner Software Binary Document created by MacJournal, a program used for journaling and blogging; stores a collection of journal entries, including each entrys title, date, and written text; may also include images and audio and video content, as well as each entrys rating, status, and priority.
.MGOURMET4 File Extension MacGourmet Deluxe 4 Document Data Mariner Software Binary Document created by MacGourmet Deluxe, a recipe and cookbook organizing program; similar to the .MGOURMET3 file; contains a recipe, cooking note, shopping list, wine note, beer note, cheese note, or reference.
.NRMLIB File Extension Neat Cabinet File Database The Neat Company Unknown Cabinet file created by Neat 5, a digital filing system; contains a library of your scanned documents; used only by the Mac version of Neat and not the Windows version of the software.
.NBAK File Extension Neat Backup File Backup The Neat Company Unknown Backup file created by Neat 5, a digital filing system application; contains a backup of your scanned documents, including receipts and contacts; similar to the .NRBAK and .NWBAK files.
.NETWORKCONNECT File Extension Apple Network Connect Document System Apple Unknown Document created by Apples System Preferences, an application included on the Apple operating system; contains information that helps you set up your network.
.NRX File Extension Neat Receipt Folder File Data The Neat Company Unknown Receipt folder file created by NeatWorks, a digital document organizing application; contains an exported copy of a Neat receipt folder of scanned receipts that can be shared between Neat users; replaced by Neat 5s .NDX extension.
.NWCP File Extension Nisus Clipboard Document Data Nisus Unknown Document used by Nisus Writer Pro, a rich text word processor; temporarily contains text and images that you add via "Copy" or "Cut;" referenced when you select "Paste."
.ODT File Extension OpenDocument Text Document Text Oracle Zip An ODT file is a text document created with Writer, the Apache OpenOffice and StarOffice word processor. It contains different elements such as text, images, drawn objects, and styles. ODT files are formatted using the OASIS OpenDocument XML-based standard.
.OFFICEUI File Extension Microsoft Office UI Customization File Settings Microsoft XML Customization file used by Microsoft Office, a document production suite; contains XML code that customizes ribbons in Microsoft Office; includes code that defines custom tabs, commands, groups, etc. that make up the Microsoft Office UI.
.OTT File Extension OpenDocument Document Template Text OASIS Binary Document template created in OASIS OpenDocument standard format; saves the page layout and default styles for a text document; used for authoring .ODT documents that have the same appearance and formatting.
.OTI File Extension OpenDocument Image Template Raster Image OASIS Zip Image template created by programs that use OASISs OpenDocument specification; stores the default settings for an image; can be used as the starting point for creating multiple .ODI image documents.
.OTC File Extension OpenDocument Chart Template Misc OASIS Zip Chart template created by programs that implement OASISs OpenDocument standard; stores the default setting and layout information for a chart and may specify the dimensions, plot area, and axis information; used to create multiple .ODC files with the same look and feel.
.ORT File Extension Rich Text Editor Document Text IBM Unknown Rich text file created with IBMs Rich Text Editor, a basic word processor included with several IBM programs; contains text and supports text and document formatting; similar to an .RTF file, but created specifically by IBM software.
.PAGES File Extension Pages Document Text Apple Zip A PAGES files is a document created by Apple Pages, a word processor and page layout program. It may be a basic text document or a complex multi-page brochure. PAGES files can include text, pictures, tables, graphs, and charts and may be created from a blank page or built from a template.
.PDF File Extension Portable Document Format File Page Layout Adobe Systems Binary A PDF file is a multi-platform document created by Adobe Acrobat or another PDF application. The PDF format is commonly used for saving documents and publications in a standard format that can be viewed on multiple platforms. In many cases, PDF files are created from existing documents instead of from scratch.
.PSI File Extension PrimalScript Online Help Shortcut Misc Sapien Technologies Unknown Shortcut to online help documentation for PrimalScript, a visual script development program; contains a subject header, file description, and links to online help.
.PN File Extension Powernoodle File Misc Powernoodle Text File created by Powernoodle, an online collaboration application used for discussing business plans, ideas, and implementations; stores content created through a Powernoodle session, such as diagrams, outlines, debriefings, or other business document content; allows users to template their organizations intellectual property, processes, business rules, and knowledge in order to share with others.
.PAGES-TEF File Extension Pages iCloud Document Text Apple Binary Text document created by Pages, the word processor included with Apples iWork suite; used as the save format when a user chooses to save the document to iCloud; differs from the standard .PAGES extension, but doesnt affect the contents of the document when reopened in Pages.
.PRO4 File Extension ProPresenter 4 Document Data Renewed Vision Binary Multimedia presentation created with ProPresenter, an application used for creating productions for church worship services; may contain multiple presentation slides as well as references to audio and video files; also stores the timeline for when to show each slide; used for saving the documents in the applications Library pane.
.PDM File Extension PowerDesigner Database File Database Sybase Unknown Database created with Sybase PowerDesigner, an enterprise modeling and design program; stores database information as well as references to other files, such as the database definition (.XDB) file and model definition (.XEM) files.
.PWI File Extension Pocket Word Document Text Microsoft Binary Document created by Microsoft Word for Windows Mobile edition, a word processing program also referred to as "Pocket Word;" created on Pocket PC PDAs running the Windows Mobile operating system; similar to a Word (.DOC) document, but does not support features such as headers, footers, and comments.
.P7M File Extension Digitally Encrypted Message Misc N/A Binary Encrypted e-mail message in which the contents and attachments are enveloped in an smime.p7m file; may require a private key matching the messages public key to open the document.
.PQB File Extension Pleco Chinese Dictionary Backup File Backup Pleco Unknown Backup file used by Pleco Chinese Dictionary, a Chinese document reader, dictionary, and flashcard program for iOS; stores a backup of a user dictionary or flashcard database; may contain a Websters English or Oxford E-C dictionary.
.PROQC File Extension ProPresenter Quartz Composition Video Renewed Vision Unknown Composer documents created by ProPresenter in order to view Quartz files (.QTZ); contains processed and rendered graphical data used for animations; appears similar to a QuickTime movie but is much smaller in size.
.QAT File Extension Microsoft Office Quick Access Toolbar File Settings Microsoft XML Customization file used by Microsoft Office, a document production suite; contains XML code that customizes ribbons in Microsoft Office; includes code that defines custom commands, groups, groups, tabs, etc. that make up the Microsoft Office UI.
.RWLIBRARY File Extension Paperless Receipt Library Misc Mariner Software Binary Digital receipt collection created by Paperless, a program used to organize electronic copies of receipts and other documents; stores scanned images of paper receipts, as well as the transaction information; used for archiving personal financial records.
.RPROJ File Extension R Project Settings The R Project for Statistical Computing Unknown Project created and used by RStudio, an open source IDE for the R programming language; contains project information used to customize the behavior of RStudio, such as loading RStudio settings and restoring previously edited source documents into editor tabs; also used to indicate whether to load the .RHISTORY file for use in the RStudio History pane and the .RDATA file in the projects main directory.
.SC45 File Extension SuperCard Project File Data Solutions Etcetera Binary Project file created by SuperCard, a high-level visual authoring tool for Mac OS X; stores a data document for the SuperCard runtime and includes user interface components, scripts, and application resources; may contain multiple windows that execute a "stack" in a manner similar to Apples HyperCard technology.
.SGML File Extension Standard Generalized Markup Language File Data N/A Unknown Document written in Standard Generalized Markup Language (SGML); includes tags that describe the informations structure and content; may contain multiple types of information, such as text, graphics, database information, and even audio and video data.
.TOPVIW File Extension TopSolid Viewer Document CAD Missler Software Unknown CAD document created by TopSolid, a CAD design and product data management (PDM) application; stores a CAD drawing exported from TopSolid, but does not include all design information such as the complete models and Bill of Materials (BoM) data; can be opened with the free TopSolidViewer program.
.TOPPRJ File Extension TopSolid Project File CAD Missler Software Binary CAD design package file used by TopSolid, a software solution for managing CAD projects; may store references to part and assembly design documents, bill of materials documents, drawing drafts, and exploded part design documents; used for consolidating and organizing CAD project documents.
.TMW File Extension Translation Memory Data File Data SDL Unknown Data file that contains linguistic and translation units for a translation memory used by Trados document translation software; continually grows and learns from the translator; can be opened directly with Trados Translators Workbench.
.VM File Extension Velocity Template Developer Apache Text Developer file used by Velocity, a Java-based template engine; written using the Velocity Template Language (VTL); contains VTL statements inserted in a normal text document; often used for auto-generating Web source code and class skeletons.
.VBD File Extension Visual Basic ActiveX Document Web Microsoft Unknown ActiveX file, also called an "Active Document," created with Microsoft Visual Basic; often hosted on Web servers and can be accessed with a Web browser.
.WSP File Extension SharePoint Solution Package Developer Microsoft Binary Package used by SharePoint, an enterprise-level document and content management system; saves a Windows SharePoint Services solution, which is a custom component, such as a website, that can be added to a companys SharePoint site.
.WBT File Extension Toribash Help File Game Nabi Studios Unknown Contains help documentation for Toribash, a 3D fighting game where users create the characters moves; may include tutorials, FAQs, and other game help; must be stored in the scripts folder in order to open correctly.
.XPS File Extension XML Paper Specification File Page Layout Microsoft Zip An XPS file is a document that contains fixed page layout information written in the XPS page description language. It defines the layout, appearance, and printing information for a document. XPS file are similar to .PDF files, but saved in Microsoft’s proprietary XPS format.
.XSIADDON File Extension Softimage Add-on File Plugin Autodesk Binary Add-on file used by Softimage, a 3D character animation and effects application; contains plug-in functionality as well as help documentation and information for adding toolbars and menus; used for packaging and distributing add-ons.
.XSS File Extension XML Style Sheet Web Oracle XML Style sheet file created in UIX Styles XML Style Sheet (XSS) language, which is based on the CSS standard, except that styles are specified in an XML format; contains layout properties for a document; used for defining the appearance of Web application pages.
.XBPLATE File Extension Xiosis Scribe Template Text Xiosis Binary Document template created by Xiosis Scribe, a word processing application; saves the default page formatting and textual information for a document; used for generating multiple .XBDOC documents with a similar style.
.ZON File Extension OmniPage Zone Template File Settings Nuance Communications Unknown File used by OmniPage, a program that uses OCR technology to transform images and other files into searchable text documents; stores framed areas, or zones, of an image that should be processed with OmniPages OCR algorithm; allows the zones to be saved and reused across multiple documents, which is helpful when processing large sets of documents that have the same page layout template.
.ZPS File Extension Zebra Portable Safe File Encoded Zebra Digital Assets Binary Encrypted archive created by ZPS Explorer, a program used for securely sharing files; contains one or more files (documents, pictures, etc.) that the user wants to protect and share; incorporates encryption, but uses a private key owned by the archives creator rather than passwords.
.BUD File Extension Binary Printer Description File System Microsoft Binary Binary file generated by the Windows operating system when sending documents to the printer in Microsoft Windows 2000 or XP; increases the spooler efficiency of the print driver; most often created from .GPD files so when the GPD parser is updated, the associated BUD file must be regenerated.
.BIFX File Extension Get Backup Project Backup BeLight Software Binary Project file created by Get Backup, a Mac OS X backup application; saves a project backup for the Mac users iPhoto library, Apple Mail email, iTunes library, Documents folder, or Address Book; enables backup options to be saved.

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