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List of filename extensions (A–E)#CSPROJ

{{Short description|none}}

{{More citations needed|date=August 2016}}

This alphabetical list of filename extensions contains extensions of notable file formats used by multiple notable applications or services.

{{List of filename extensions TOC}}

A

class="wikitable sortable"
scope="col" | Ext.scope="col" | Descriptionscope="col" | Used by
{{Visible anchor|A}}

| Archive file

| ar (Unix)

{{Visible anchor|AAC}}

| Advanced Audio Coding file

| iOS, Nintendo DSi, Nintendo 3DS, YouTube Music

{{Visible anchor|ACCDB}}{{cite web|url=https://support.microsoft.com/en-us/office/which-access-file-format-should-i-use-012d9ab3-d14c-479e-b617-be66f9070b41 |title =Which Access file format should I use?|access-date=2020-09-13|website=microsoft.com}}

|Microsoft Access Database

|Microsoft Access Database (Open XML)

{{Visible anchor|ACCFT}}{{cite web|url=https://support.office.com/en-us/article/Save-and-reuse-database-design-elements-b63b7d1b-851e-4bf8-8bbb-3e4840e789df |title=Save and reuse database design elements |access-date=29 October 2015}}

|Microsoft Access Data Type Template

|Microsoft Access

ACO

|Adobe color palette format (.aco){{Cite web |title=Listing of All Formats |url=https://reference.wolfram.com/language/guide/ListingOfAllFormats.html}}

|Adobe Photoshop{{Cite web |title=ACO (.aco) |url=https://reference.wolfram.com/language/ref/format/ACO.html |website=Wolfram Language & System Documentation Center}}

{{Visible anchor|ADT}}

|Abrechnungsdatentransfer, an xDT application

|Healthcare providers in Germany

{{Visible anchor|ADX}}

|Document

|Archetype Designer

{{Visible anchor|ADZ}}

|Amiga Disk Zipped (See Amiga Disk File)

|GZip

{{Visible anchor|AGDA}}

|Agda (programming language) source file

|Agda typechecker/compiler

{{Visible anchor|AGR}}

|ArcView ASCII grid

|

{{Visible anchor|AHK}}

|AutoHotkey script file

|AutoHotkey

{{Visible anchor|AI}}{{cite web|url=https://www.adobe.com/creativecloud/design/discover/vector-file.html | title =What is a vector file?|access-date=2020-09-12 |website=adobe.com}}

|Adobe Illustrator Artwork

|Adobe Illustrator

{{Visible anchor|AIFF}}{{cite web |url=http://shoko.calarts.edu/~tre/AIFFC/comptype.html |title=AIFF-C Compression Types and Names |author=Tom Erbe |year=1999 |access-date=2010-03-21 |archive-url=https://web.archive.org/web/20060620002145/http://shoko.calarts.edu/~tre/AIFFC/comptype.html |archive-date=2006-06-20}}

|Audio Interchange File Format

|professional audio processing applications and on Macintosh{{Cite web |title=AIFF (.aif, .aiff, .aifc) |url=https://reference.wolfram.com/language/ref/format/AIFF.html}}

{{Visible anchor|AIFC}}

|Compressed Audio Interchange File Format

|

{{Visible anchor|AIO}}

|APL programming language file transfer format file

|

{{Visible anchor|AMF}}[http://www.astm.org/Standards/ISOASTM52915.htm Specification for Data Exchange Format for Additive Manufacturing][https://www.iso.org/standard/67472.html Specification of AMF on ISO web page]

|Additive Manufacturing File Format

|Computer Aided Design Software

{{Visible anchor|AMG}}

|System image file

|ACTOR

{{Visible anchor|AML}}{{cite web|url=http://www.unserebroschuere.de/automationml/WebView/ |access-date=2020-09-13 |title=AutomationML | publisher=AutomationML e. V.}}

|AutomationML

|AutomationML Group

{{Visible anchor|AMLX}}

|Compressed and packed AutomationML file

|AutomationML Group

{{Visible anchor|AMPL}}

|AMPL source code file

|AMPL

{{Visible anchor|AMR}}

|Adaptive Multi-Rate audio

|

{{Visible anchor|AMV}}

|Actions Media Video

|

{{Visible anchor|ANI}}{{Cite web|url=https://www.gdgsoft.com/anituner/help/aniformat.htm |title = About animated cursors |access-date=2020-09-14 |website=gdgsoft.com}}

|Animation cursors for Win

|Win95 - WinNT

{{Visible anchor|ANN}}

|Annotations of old Windows Help file

|Windows 3.0 - XP

{{Visible anchor|APE}}

|Monkey's Audio (Lossless)

|audio media players

{{Visible anchor|APK}}

|Android application package

|Android

APK

|Alpine Linux Package

| Alpine Linux and derivatives

{{Visible anchor|ARC}}{{cite web|url=https://archive.org/web/researcher/ArcFileFormat.php |title=Arc File Format |first1=Mike |last1=Burner |first2=Brewster |last2=Kale |access-date=2020-09-13 |date=1996-09-15}}

| ARC (file format)

|

{{Visible anchor|ART}}{{cite web|url=https://www.ucamco.com/en/gerber |title=Gerber Format |date=2020-04-09 |access-date=2020-09-13 |website=ucamco.com }}

| Gerber format

|Cadence Allegro, EAGLE

{{Visible anchor|ASAX}}[https://docs.microsoft.com/en-us/previous-versions/2wawkw1c(v=vs.140) ASP.NET Web Project File Types]

|ASP.NET global application file

|

{{Visible anchor|ASCX}}

|ASP.NET User Control

|

{{Visible anchor|ASF}}{{cite web|url=https://docs.microsoft.com/en-us/windows/win32/wmformat/overview-of-the-asf-format |title=Overview of the ASF format |date=2018-05-31|access-date=2020-09-12|website=microsoft.com}}

|Advanced Streaming Format (Compressed Windows audio/video)

|Microsoft Corporation

{{Visible anchor|ASHX}}

|ASP.NET handler file

|

{{Visible anchor|ASM}}

|Assembler language source

|TASM, MASM, NASM, FASM

{{Visible anchor|ASPX}}

|Active server page extended file

|Microsoft Corporation

{{Visible anchor|ASX}}{{cite web|url=https://docs.microsoft.com/en-us/windows/win32/wmp/asx-element#examples | website=microsoft.com |title=ASX Element |date=2018-05-31 |access-date=2020-09-14}}

|Advanced Stream Redirector file, redirects to an ASF file (see ASF)

|Microsoft Corporation

{{Visible anchor|ATG}}{{cite web|url=https://github.com/SSW-CocoR/CocoR-Java/blob/master/src/Coco.atg |title=Coco/R own DSL grammar|website=github.com}}

| Coco/R LL(1) formal grammar

| Coco/R

{{Visible anchor|AT3}}{{cite web|url=https://www.sony.net/Products/ATRAC3/special/developers01.html |title=ATRAC Developer's Interview|website=sony.net |access-date=2020-09-12}}

|Atrac 3 Sound/music file

|All Sony devices and programs with the Atrac 3+ specification

AU

|audio file{{Cite web |title=AU (.au) |url=https://reference.wolfram.com/language/ref/format/AU.html}}

|

{{Visible anchor|AVI}}{{Cite web|url=https://www.loc.gov/preservation/digital/formats/fdd/fdd000442.shtml|title=AVI File Format with OpenDML Extensions, Version 1.02|date=2016-03-09|website=www.loc.gov|access-date=2019-09-01}}{{Cite web|url=https://docs.microsoft.com/en-us/windows/win32/directshow/avi-riff-file-reference|title=AVI RIFF File Reference - Windows applications|last=stevewhims|website=docs.microsoft.com|language=en-us|access-date=2019-09-01}}

| Audio Video Interleave

| Video for Windows

{{Visible anchor|AVIF}}

| AV1 Image File Format

|

{{Visible anchor|AWK}}

|AWK script/program

|awk, GNU Awk, mawk, nawk, MKS AWK, Awka (compiler)

{{Visible anchor|AX}}

| DirectShow Filter

| Microsoft Corporation (Video Players)

{{Visible anchor|AXF}}{{Cite web|url=http://arcpadteam.blogspot.de/2008/06/what-is-arcpad-axf.html|title=The ArcPad Team Blog: What is an ArcPad AXF?}}

|lightweight geodatabase

|ESRI ArcPad

B

class="wikitable sortable"

! scope="col" | Ext. !! scope="col" | Description !! scope="col" | Used by

{{Visible anchor|B}}

|BASIC language source

|

{{Visible anchor|B}}

|bc arbitrary precision calculator language file

| Unix bc tool

B64

|base64 binary-to-text encoding{{Cite web |title=Base64 (.b64) |url=https://reference.wolfram.com/language/ref/format/Base64.html}}

|

{{Visible anchor|BAK}}

|backup

|various

{{Visible anchor|BAR}}

|Broker Archive. Compressed file containing number of other files for deployment.{{cite web|url=https://www.ibm.com/docs/en/app-connect/11.0.0?topic=software-deploying-integration-solutions |title=Deploying integration solutions |publisher=ibm.com |access-date=2021-05-18}}

|IBM App Connect

{{Visible anchor|BAS}}

|BASIC language source

|QuickBASIC - GW-BASIC - FreeBASIC - others

{{Visible anchor|BAT}}

|Batch file

|MS-DOS, RT-11, DOS-based command processors

{{Visible anchor|BDF}}

|Glyph Bitmap Distribution Format, a format used to store bitmap fonts.

|Adobe

{{Visible anchor|BDT}}

|Behandlungsdatentransfer, an xDT application

|Healthcare providers in Germany

{{Visible anchor|BEAM}}

|Executable bytecode file in fat binary format

|BEAM (Erlang virtual machine){{Cite web|url=https://happi.github.io/theBeamBook/|title=The Erlang Runtime System|website=happi.github.io|language=en|access-date=2018-05-07}}

BIB

|Bibliography database

|BibTex

BIN

|binary file

|Every OS

BLEND

|Blender project file

|Blender

{{Visible anchor|BM3}}

|UIQ3 Phone backup

|

{{Visible anchor|BMP}}{{cite web|url=https://docs.microsoft.com/en-us/windows/win32/gdi/bitmap-storage |date=2018-05-31 |access-date=2020-09-12 |title=Bitmap Storage |website=microsoft.com}}

|OS/2 or Win graphics format (BitMap Picture)

|QPeg - CorelDraw - PC Paintbrush - many

BPS

|WPS backup file{{Cite web|url=https://fileinfo.com/extension/bps|title=BPS File Extension - What is a .bps file and how do I open it?|website=fileinfo.com|language=en|access-date=2018-10-12}}

|Microsoft Word, Microsoft Works

BSON

|JSON-like binary serialization{{Cite web |title=BSON (.bson) |url=https://reference.wolfram.com/language/ref/format/BSON.html}}

|MongoDB

BSP

|Binary space partitioning tree file

|Quake-based game engines

BYU

|3D geometry format{{Cite web |title=BYU (.byu) |url=https://reference.wolfram.com/language/ref/format/BYU.html}}

|CAD systems

{{Visible anchor|BZ2}}{{cite web | url=https://github.com/dsnet/compress/blob/master/doc/bzip2-format.pdf | title=BZIP2 Format Specification | website=GitHub | date=27 February 2022 }}

|Archive

|bzip2

C

class="wikitable sortable"

! scope="col" | Ext. !! scope="col" | Description !! scope="col" | Used by

{{Visible anchor|C--}}

|C-- language source

|Sphinx C--

{{Visible anchor|C}}

|C language source

Note that on case-sensitive platforms like Unix and with the gcc compiler the uppercase .C extension indicates a C++ source file.{{Cite web|title=Overall Options - Using the GNU Compiler Collection (GCC)|url=https://gcc.gnu.org/onlinedocs/gcc-4.4.1/gcc/Overall-Options.html|access-date=2020-06-27|website=gcc.gnu.org}}

|Watcom C/C++, Borland C/C++, gcc and other C compilers

{{Visible anchor|C}}

|Unix file archive

|COMPACT

{{Visible anchor|C++}}

|C++ language source

|

{{Visible anchor|CPP}}

|C++ language source

|

{{Visible anchor|C32}}

|COMBOOT Executable (32-bit)

|SYSLINUX

{{Visible anchor|CAB}}{{cite web|url=https://docs.microsoft.com/en-us/windows/win32/msi/cabinet-files |title=Cabinet Files |date=2018-05-31 |access-date=2020-09-13 |website=microsoft.com}}

|Cabinet archive

|Windows 95 and later, many file archivers

{{Visible anchor|CBL}}{{cite book | url=https://books.google.com/books?id=MJmJAwAAQBAJ&pg=PA4 | title=Beginning COBOL for Programmers | publisher=Apress | access-date=13 August 2014 | page=400 | first=Michael | last=Coughlan | isbn=978-1430262534 | date=16 March 2014}}

|COBOL language source

|

{{Visible anchor|CBT}}

|COMBOOT Executable (incompatible with DOS COM files)

|SYSLINUX

{{Visible anchor|CC}}

|C++ language source

|

{{Visible anchor|CD}}

|ASP.NET class diagram file

|

{{Visible anchor|CDF}}{{cite web|url=https://cdf.gsfc.nasa.gov/ |title=What is Common Data Format (CDF)? |access-date=2020-09-13}}

|Common Data Format

|

{{Visible anchor|CDF}}{{cite web|url=https://www.wolfram.com/cdf/ |title=Computable Document Format |access-date=2020-09-12|website=wolfram.com}}

|Computable Document Format

|Mathematica

CDP{{Cite web |title=CDP File - What is it and how do I open it? |url=https://file.org/extension/cdp |access-date=2022-10-28 |website=file.org |language=en}}

|Trainz Railroad Simulator Content Dispatcher Pack

|Trainz Railroad Simulator

{{Visible anchor|CDR}}{{cite web|url=https://www.coreldraw.com/en/pages/open-cdr-file/ |title=Trying to Open a .CDR File? |access-date=2020-09-12}}

|Vector graphics format (drawinF

|CorelDraw

CDXML

|MIME type: chemical/x-cdxmlXML version of the ChemDraw Exchange format, CDX.{{Cite web |title=CDXML (.cdxml) |url=https://reference.wolfram.com/language/ref/format/CDXML.html}}

|

{{Visible anchor|CER}}{{cite web|url=https://knowledge.digicert.com/generalinformation/INFO2824.html |title=Certificate extensions explained |access-date=2020-09-12 |website=digicert.com}}

|Security certificate

|Microsoft Windows

{{Visible anchor|CGM}}[https://www.iana.org/assignments/media-types/image/ IANA Image Media Types][http://standards.iso.org/ittf/PubliclyAvailableStandards/index.html ISO/IEC 8632]

|Computer Graphics Metafile vector graphics

|A&L - HG - many

{{Visible anchor|CHM}}{{cite web|url=https://docs.microsoft.com/en-us/previous-versions/windows/desktop/htmlhelp/create-a-help-project | title=Create a Help Project |access-date=2020-09-12 |date=2018-05-31}}

| Compiled Help File

| Microsoft Windows, Help Explorer Viewer

{{Visible anchor|CHO}}{{cite web|url=https://www.chordpro.org/chordpro/index.html | title=Welcome to ChordPro! |access-date=2020-09-12}}

| ChordPro lead sheet (lyrics and chords)

| ChordPro and similar tools

{{Visible anchor|CIA}}

| Decrypted Nintendo 3DS ROM cartridge

| Nintendo 3DS

{{Visible anchor|CIF}}{{cite journal |vauthors=Hall SR, Allen FH, Brown ID |title=The Crystallographic Information File (CIF): a new standard archive file for crystallography |journal=Acta Crystallographica Section A|volume=47 |pages=655–685 |year=1991 |doi=10.1107/S010876739101067X |issue=6 |doi-access=free }}{{cite journal |vauthors=Brown ID, McMahon B |title= CIF: the computer language of crystallography| url = http://journals.iucr.org/b/issues/2002/03/01/an0595/index.html|journal=Acta Crystallographica Section B: Structural Science |volume=58 |issue=Pt 3 Pt 1 |pages=317–24 |year=2002 |doi= 10.1107/s0108768102003464|pmid=12037350|url-access=subscription }}

|Crystallographic Information File

|RasMol, Jmol

{{Visible anchor|CLASS}}{{cite web|url=https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html |access-date=2020-09-12 |title=The class File Format |website=oracle.com}}

|Java class file

|Java

CLS

|ooRexx class file

|ooRexx

{{Visible anchor|CMD}}

|Command Prompt batch file

|Microsoft Windows NT based operating systems

{{Visible anchor|CMD}}{{cite web |author-first=John C. |author-last=Elliott |work=Seasip.info |title=CP/M-86 executables (.CMD) |url=http://www.seasip.info/Cpm/cmdfile.html |access-date=2016-08-29 |url-status=live |archive-url=https://web.archive.org/web/20161114135028/http://www.seasip.info/Cpm/cmdfile.html

|archive-date=2016-11-14}}

|executable programs

|CP/M-86 operating system

CML

|Chemical Markup Language, for interchange of chemical information.{{Cite web |title=CML (.cml) |url=https://reference.wolfram.com/language/ref/format/CML.html}}

|

{{Visible anchor|CMOD}}{{cite web|url=https://www.classe.cornell.edu/~seb/celestia/cmod_format.html | title=Celestia's CMOD model format |access-date=2020-09-12 }}

|Celestia Model

|Celestia

{{Visible anchor|CN1}}{{cite web|url=https://fileinfo.com/extension/cn1 | title=MITRE's Combat Net Radio Initialization File |access-date=2020-11-30 }}

|CNR IDL

|MITRE

CNOFF

|3D object file format with normals (.noff, .cnoff){{Cite web |title=Listing of All Formats |url=https://reference.wolfram.com/language/guide/ListingOfAllFormats.html}} NOFF is an acronym derived from Object File Format. Occasionally called CNOFF if color information is present.{{Cite web |title=NOFF (.noff, .cnoff) |url=https://reference.wolfram.com/language/ref/format/NOFF.html}}

|

{{Visible anchor|COB}}{{cite book | url=https://gnucobol.sourceforge.io/HTML/gnucobpg.html | title=GnuCOBOL Programmer's Guide | date=July 2020 | last1=Cutler | first1=Gary | last2=Coen | first2=Vincent | edition=3.1 RC-1 |section=10.1. Compiling Programs}}

|COBOL language source

|GnuCOBOL

{{Visible anchor|COE}}{{cite web|url=https://www.xilinx.com/support/documentation/sw_manuals/xilinx11/cgn_r_coe_file_syntax.htm |title=COE File Syntax |date=2009 |website=xilinx.com}}

|Coefficient file

|Xilinx ISE

COFF

|3D object file format (.off, .coff){{Cite web |title=Listing of All Formats |url=https://reference.wolfram.com/language/guide/ListingOfAllFormats.html}} OFF is an acronym for Object File Format. Used for storing and exchanging 3D models. Occasionally called COFF if color information is present.{{Cite web |title=OFF (.off, .coff) |url=https://reference.wolfram.com/language/ref/format/OFF.html}}

|

COL

|DIMACS graph data format.{{Cite web |title=DIMACS (.col, .col.b) |url=https://reference.wolfram.com/language/ref/format/DIMACS.html}}

|

{{Visible anchor|COM}}

|DOS program

|DOS-

{{Visible anchor|COMPILE}}

|ASP.NET precompiled stub file

|

CONFIG

|Configuration file

|

{{Visible anchor|CPC}}{{cite web|url=https://www.cartesianinc.com/Tech/tech-overview.html |date=1999 |title=Technical Overview of Cartesian Perceptual Compression |access-date=2020-09-13}}

|Compressed image

|Cartesian Perceptual Compression

{{Visible anchor|CPIO}}

|cpio archive file

|cpio

{{Visible anchor|CPL}}{{cite web |url=https://support.microsoft.com/en-us/help/149648/description-of-control-panel-cpl-files |title=Description of Control Panel (.cpl) Files |date=2020-08-19 |access-date=2020-09-12|website=microsoft.com}}

|Control panel file

|Windows 3.x

{{Visible anchor|CPY}}

|COBOL source copybook file

|

{{Visible anchor|CR2}}{{cite web|url=http://lclevy.free.fr/cr2/ |title=Understanding What is stored in a Canon RAW .CR2 file, How and Why |access-date=2020-09-12}}

|Raw image format

|Canon digital cameras

CR3{{Cite web |title=Quick look: Canon's new compressed Raw format |url=https://www.dpreview.com/articles/0483301097/quick-look-canons-new-compressed-raw-format |access-date=2023-07-15 |website=DPReview}}

|Raw image format

|Canon R series cameras

{{Visible anchor|CRAI}}{{Cite journal|last1=Hsi-Yang Fritz|first1=Markus|last2=Leinonen|first2=Rasko|last3=Cochrane|first3=Guy|last4=Birney|first4=Ewan|date=May 2011|title=Efficient storage of high throughput DNA sequencing data using reference-based compression|journal=Genome Research|volume=21|issue=5|pages=734–740|doi=10.1101/gr.114819.110|issn=1549-5469|pmc=3083090|pmid=21245279}}

|CRAM index

|

CRAFT

|Holds Spacecraft Assembly information

|Kerbal Space Program

{{Visible anchor|CRT}}

|Security certificate

|Microsoft Windows

{{Visible anchor|CS}}{{cite web|url=https://docs.microsoft.com/en-us/visualstudio/get-started/tutorial-projects-solutions?view=vs-2019 |date=2020-11-17|access-date=2021-05-06 |title=Introduction to projects and solutions|website=docs.microsoft.com}}

|C# language source

|

{{Visible anchor|CSPROJ}}{{cite web|url=https://docs.microsoft.com/en-us/dotnet/core/tools/csproj |date=2019-04-28|access-date=2020-09-12 |title=Additions to the csproj format for .NET Core|website=microsoft.com}}{{cite web|title=Understanding the project file |url=https://docs.microsoft.com/en-us/aspnet/web-forms/overview/deployment/web-deployment-in-the-enterprise/understanding-the-project-file |date=2012-05-04|website=microsoft.com}}

|C# project file

|Microsoft Visual Studio

{{Visible anchor|CSS}}{{cite web|url=https://www.w3.org/Style/CSS/|title=Cascading Style Sheets home page |access-date=2020-09-12 |website=w3.org}}

|Cascading style sheet

|

{{Visible anchor|CSO}}{{cite web|url=https://learn.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-part1|title=Compiling shaders home page |access-date=2023-03-28 |website=w3.org}}

|Compiled Shader Object, extension of compiled HLSL

|High-Level Shading Language

{{Visible anchor|CSV}}{{cite IETF |url=http://www.ietf.org/rfc/rfc4180.txt |title=Common Format and MIME Type for CSV Files |last=Shafranovich |first=Y. |publisher=IETF |date=October 2005 |rfc=4180 |page=1 }}

|Comma Separated Values text file format (ASCII)

|

CUB

|Used by electronic structure programs to store orbital or density values on a three-dimensional grid.{{Cite web |title=Cube (.cub, .cube) |url=https://reference.wolfram.com/language/ref/format/Cube.html}}

|

CUBE

|same as .cub

|

{{Visible anchor|CUR}}

|Non-animated cursor (extended from ICO)

|Windows

D

class="wikitable sortable"

! scope="col" | Ext. !! scope="col" | Description !! scope="col" | Used by

{{Visible anchor|D}}

|D Programming Language source file

|DMD

{{Visible anchor|D}}

|Directory containing configuration files (informal standard)

|Unix

{{Visible anchor|DAA}}

|Direct Access Archive

|

{{Visible anchor|DAE}}

|COLLADA file

|

{{Visible anchor|DAF}}

|Data file

|Digital Anchor

{{Visible anchor|DPFHTML}}

|Extended from HTML

|DarkPurpleOF's Website Extension

{{Visible anchor|DART}}

|Dart (programming language) source file

|

{{Visible anchor|DAT}}

|AMPL data file

|AMPL

{{Visible anchor|DAT}}

|LDraw (Sub)Part File, 3D Model

|LDraw

{{Visible anchor|DAT}}

|Data

|RSNetWorx Project

{{Visible anchor|DAT}}

|Data file in special format or ASCII

|

{{Visible anchor|DAT}}

|Database file

|Clarion (programming language)

{{Visible anchor|DAT}}

|Norton Utilities disc image data. It saves Boot sector, part of FAT and root directory in image.DAT on same drive.

|Norton Utilities

{{Visible anchor|DAT}}

|Optical disc image (can be ISO9660, but not restricted to)

|cdrdao, burnatonce

{{Visible anchor|DAT}}

|Video CD MPEG stream

|

{{Visible anchor|DAT}}

|Windows registry hive (REG.DAT Windows 3.11; USER.DAT and SYSTEM.DAT Windows 95, 98, and ME; NTUSER.DAT Windows NT/2000/XP/7)

|Microsoft Windows

{{Visible anchor|DATS}}

|Dynamic source

|ATS

DB

|Database file

|[https://sqlitebrowser.org/ DB Browser for SQLite]

{{Visible anchor|DBA}}

|DarkBasic source code

|

{{Visible anchor|DBC}}

|Database Connection configuration file

|AbInitio

DBF

|Native format of the dBASE database management application.{{Cite web |title=DBF (.dbf) |url=https://reference.wolfram.com/language/ref/format/DBF.html}}

|

{{Visible anchor|DBG}}

|Debugger script

|DOS debug - Watcom debugger

{{Visible anchor|DBG}}

|Symbolic debugging information

|Microsoft C/C++

{{Visible anchor|DEB}}

|deb software package

|Debian Linux and derivatives

DEM

|digital elevation model (DEM) including GTOPO30 and USGSDEM. GTOPO30 is a distribution format for a global digital elevation model (DEM) with 30-arc-second grid spacing.{{Cite web |title=GTOPO30 |url=https://reference.wolfram.com/language/ref/format/GTOPO30.html}} USGSDEM is the standard format for the distribution of terrain elevation data for the United States.{{Cite web |title=USGSDEM (.dem) |url=https://reference.wolfram.com/language/ref/format/USGSDEM.html}}

{{Visible anchor|DGN}}

|CAD Drawing

|Bentley Systems, MicroStation and Intergraph's Interactive Graphics Design System (IGDS) CAD programs

{{Visible anchor|DICOM}}

|Digital Imaging and Communications in Medicine (DICOM) bitmap

|DICOM Software (XnView)

{{Visible anchor|DIF}}

|Data Interchange Format

|Visicalc

{{Visible anchor|DIF}}

|Output from [diff] command - script for Patch command

|

{{Visible anchor|DIRED}}

|Directory listing (ls format)

|Dired

{{Visible anchor|DIVX}}

|DivX media format

|

{{Visible anchor|DMG}}

|Apple Disk Image

|macOS (Disk Utility)

{{Visible anchor|DMP}}

| memory dump file (e.g. screen or memory)

|

{{Visible anchor|DN}}

| Dimension model format

|Adobe Dimension[https://helpx.adobe.com/dimension/user-guide.html/dimension/using/supported-file-types.ug.html Adobe Dimension User Guide]

{{Visible anchor|DNG}}{{Cite web|url=https://helpx.adobe.com/photoshop/digital-negative.html#dng|title=Digital Negative (DNG)|publisher=Adobe Systems Incorporated.|access-date=2018-07-30}}

|Digital Negative, a-publicly available archival format for the raw files generated by digital cameras

|At least 30 camera models from at least 10 manufacturers, and at least 200 software products

{{Visible anchor|DOC}}{{citation |url=http://www.microsoft.com/interop/docs/officebinaryformats.mspx |archive-url=https://web.archive.org/web/20080218212338/http://www.microsoft.com/interop/docs/officebinaryformats.mspx |title=Microsoft Office Binary (doc, xls, ppt) File Formats |date=2008-02-15 |archive-date=2008-02-18}}{{cite web|url=http://download.microsoft.com/download/0/B/E/0BE8BDD7-E5E8-422A-ABFD-4342ED7AD886/Word97-2007BinaryFileFormat(doc)Specification.pdf|title=Microsoft Office Word 97 - 2007 Binary File Format Specification (*.doc)|year=2008|work=Microsoft Corporation }}{{citation | url=http://msdn.microsoft.com/en-us/library/cc313153%28v=office.12%29 |title=MS-DOC: Word (.doc) Binary File Format |date=2019-11-19|access-date=2020-02-25}}

|A Document, or an ASCII text file with text formatting codes in with the text; used by many word processors

|Microsoft Word and others

{{Visible anchor|DOCM}}

|Microsoft Word Macro-Enabled Document

|Microsoft Word

{{Visible anchor|DOCX}}{{cite web|url=https://docs.microsoft.com/en-us/openspecs/office_standards/ms-docx/b839fe1f-e1ca-4fa6-8c26-5954d0abbccd |access-date=2020-08-29 |date=2020-08-18 |title=Word Extensions to the Office Open XML (.docx) File Format}}

|Microsoft Word Document

|Microsoft Word

{{Visible anchor|DOT}}

|Microsoft Word document template

|Microsoft Word

{{Visible anchor|DOTX}}

|Office Open XML Text document template

|Microsoft Word

{{Visible anchor|DPX}}{{cite book|doi=10.5594/SMPTE.ST268-1.2014|isbn=978-1-68303-083-6|publisher=SMPTE|title=ST 268-1:2014 - SMPTE Standard - File Format for Digital Moving-Picture Exchange (DPX)}}{{cite book|doi=10.5594/SMPTE.ST268-2.2018|isbn=978-1-68303-161-1|publisher=SMPTE|title=ST 268-2:2018 - SMPTE Standard - Digital Moving-Picture Exchange (DPX) – Format Extensions for High Dynamic Range and Wide Color Gamut|s2cid=252588275 }}

|Digital Picture Exchange

|

{{Visible anchor|DRC}}

|Dirac format video

|

{{Visible anchor|DSC}}{{cite web|url=https://www.classe.cornell.edu/~seb/celestia/dsc-file-parameters.html |title=DSC Parameters recognized by Celestia v1.4.1 (and later) |access-date=2020-09-13}}

|Celestia Deep Space Catalog file

|Celestia

DTA

|Stata database transport format.{{Cite web |title=DTA (.dta) |url=https://reference.wolfram.com/language/ref/format/DTA.html}}

|Stata

{{Visible anchor|DTD}}{{cite web|url=https://www.w3.org/TR/REC-xml/#dt-doctype | title=Extensible Markup Language (XML) 1.0 |edition =5 |date=2008-11-26 |access-date=2020-09-13 |website=w3.org}}

|Document Type Definition

|

{{Visible anchor|DVC}}{{cite web|url=https://dvc.org | title=Data Version Control}}

|Data version control yaml pointer into blob storage

|

{{Visible anchor|DWF}}

|Autodesk Design Web Format

|Design Review

{{Visible anchor|DWG}}{{cite web|url=https://www.opendesign.com/files/guestdownloads/OpenDesign_Specification_for_.dwg_files.pdf |title=Open Design Specification for .dwg Files |website=opendesign.com |access-date=2020-09-13}}

|Drawing

|AutoCAD, IntelliCAD, PowerCAD, Drafix, DraftSight etc.

DX

|same as JDX and JCM.

|

{{Visible anchor|DXF}}{{cite web|url = http://images.autodesk.com/adsk/files/autocad_2012_pdf_dxf-reference_enu.pdf |title= DXF Reference |date=February 2011| access-date=2020-09-13|website=autodesk.com}}

|Drawing Interchange File Format vector graphics

|AutoCAD, IntelliCAD, PowerCAD, etc.

E

class="wikitable sortable"

! scope="col" | Ext. !! scope="col" | Description !! scope="col" | Used by

{{Visible anchor|E}}

|E language source code

|E

{{Visible anchor|E##}}

|EnCase Evidence File chunk

|EnCase Forensic Analysis Suite entity

{{Visible anchor|E00}}

|ArcInfo interchange file

|GIS software

{{Visible anchor|E2D}}

|2-dimensional vector graphics file

|Editor included in JFire

{{Visible anchor|e57}}

|A file format developed by ASTM International for storing point clouds and images

|Most software that enables viewing and/or editing of 3D point clouds

{{Visible anchor|EBD}}

|versions of DOS system files (AUTOEXEC.BAT, COMMAND.COM, CONFIG.SYS, WINBOOT.SYS, etc.) for an emergency boot disk

|Windows 98, ME

{{Visible anchor|EC}}

|Source code

|eC

{{Visible anchor|ECC}}

|Error-checking file

|dvdisaster

{{Visible anchor|EDE}}

|Ensoniq EPS disk image

|AWAVE

{{Visible anchor|EDF}}

|European data format

|Medical timeseries storage files

EFI

|Extensible Firmware Interface

|

{{Visible anchor|EIS}}

|EIS Spectrum Analyser Project

|[http://www.abc.chemistry.bsu.by/vi/analyser/ EIS Spectrum Analyser] {{Webarchive|url=https://web.archive.org/web/20100329150827/http://www.abc.chemistry.bsu.by/vi/analyser/ |date=2010-03-29 }}

{{Visible anchor|EL}}

|Emacs Lisp source code file

|Emacs

{{Visible anchor|ELC}}

|Byte-compiled Emacs Lisp code

|Emacs

ELF

|Executable and Linkable File

EurekaLog File (contains details of an exception)

|Unix

EurekaLog (https://www.eurekalog.com/)

{{Visible anchor|EMAIL}}

|Outlook Express Email Message

|Windows Live Mail, Outlook Express, Microsoft Notepad

{{Visible anchor|EMAKER}}

|E language source code (maker)

|E

{{Visible anchor|EMF}}

|Microsoft Enhanced Metafile

|

{{Visible anchor|EML}}

|Email conforming to RFC 5322;{{Cite web

| url = https://fileinfo.com/extension/eml

| title = .EML File Extension

| access-date = 2022-01-10

| archive-url = https://web.archive.org/web/20210812060630/https://fileinfo.com/extension/eml

| archive-date = 2021-08-12

}} Stationery Template

|Email clients;Outlook Express

{{Visible anchor|EMZ}}

|Microsoft Enhanced Metafile compressed with ZIP

|Microsoft Office suite

{{Visible anchor|EOT}}

|Embedded OpenType

|

{{Visible anchor|EP}}

|GUI wireframe/prototype project

|Prikhi Pencil, Evolus Pencil

{{Visible anchor|EPA}}

|Award BIOS splash screen

|Award BIOS, XnView

{{Visible anchor|EPS}}

|Encapsulated PostScript

|CorelDraw - PhotoStyler - PMView - Adobe Illustrator - Ventua Publisher

{{Visible anchor|EPUB}}

|Electronic Publication (e-Reader format)

|Okular (Linux) - Apple Books - Sony Reader - Adobe Digital Editions - Calibre (LMW)

EU4

|Europa Universalis 4 save game file

|Europa Universalis 4

{{Visible anchor|ERL}}

|Erlang source code file

|

{{Visible anchor|ES6}}

|ECMAScript 6 file

|

{{Visible anchor|ESCPCB}}

|Data file of "esCAD pcb", PCB Pattern Layout Design Software

|esCAD pcb provided by Electro-System

{{Visible anchor|ESCSCH}}

|Data file of "esCAD sch", Drawing Schematics Diagram Software

|esCAD sch provided by Electro-System

{{Visible anchor|ESD}}

|Windows Imaging Format

|ImageX, DISM, 7-Zip, wimlib

{{Visible anchor|ETL}}

|event trace log file

|Microsoft

{{cite web

| url = https://technet.microsoft.com/en-us/library/bb684646.aspx

| title = Windows Event Trace Log Sink

| date = 2005-06-20

| website = Microsoft TechNet

| publisher = Microsoft

| access-date = 2017-02-08

| quote = The Event Trace Sink provided with the Microsoft Enterprise Instrumentation Framework (EIF) produces event trace log (.etl) files [...].

}}

Compare: {{cite book

| last1 = Rea

| first1 = Sara Morgan

| title = Building Intelligent .NET Applications: Agents, Data Mining, Rule-based Systems, and Speech Processing

| url = https://books.google.com/books?id=VbdQAAAAMAAJ

| series = Addison-Wesley Microsoft Technology Series

| year = 2005

| publisher = Addison Wesley

| publication-date = 2005

| page = 41

| isbn = 9780321246264

| access-date = 2017-02-08

| quote = Each call is logged to the Windows Event Trace Log and stored in a log file with an .etl (event log tracing) extension.

}}

{{Visible anchor|EVT}}

|Windows Event log file

|Microsoft Windows NT 4.0 - XP; Microsoft Event Viewer

{{Visible anchor|EVTX}}

|Windows Event log file XML structured

|Microsoft Windows Vista, 7, 8; Microsoft Event Viewer

{{Visible anchor|EX}}

|Elixir source code file

|Elixir programming language running on BEAM (Erlang virtual machine){{Cite web|url=https://elixir-lang.org/getting-started/modules-and-functions.html|title=Modules and functions|website=elixir-lang.github.com|language=en-US|access-date=2018-05-07}}

{{Visible anchor|EXE}}

|Directly executable program

|DOS, OpenVMS, Microsoft Windows, Symbian or OS/2

{{Visible anchor|EXP}}

|Drawing File format

|Drawing Express

{{Visible anchor|EXP}}

|Melco Embroidery Format

|Embroidermodder

EXR

|OpenEXR raster image format (.exr). Used in digital image manipulation for theatrical film production. EXR is an acronym for Extended Dynamic Range. Stores 16 bit per pixel IEEE HALF-precision floating-point color channels. Can optionally store 32-bit IEEE floating-point "Z" channel depth-buffer components, surface normal directions, or motion vectors.{{Cite web |title=OpenEXR (.exr) |url=https://reference.wolfram.com/language/ref/format/OpenEXR.html}}

|

{{Visible anchor|EXS}}

|Elixir script file

|Interactive Elixir (IEx) shell{{Cite web|url=https://elixir-lang.org/crash-course.html|title=Erlang/Elixir Syntax: A Crash Course|website=elixir-lang.github.com|language=en-US|access-date=2018-05-07}}

See also

References

{{Reflist|35em}}

External links

  • [http://dotwhat.net/ File Extension Resource]
  • [http://www.fileinfo.com/ The File Extensions Resource]
  • [http://www.file-extensions.org/ File information site]
  • [https://web.archive.org/web/20120517125537/http://www.findfiles.net/file-formats File format finder]
  • [http://www.cryer.co.uk/filetypes/ List of file types]
  • [http://filext.com/ File format search engine]

{{DEFAULTSORT:List of filename extensions (A-E)}}

* A

* A