List of file extensions

A filename extension, file extension or file type is an identifier specified as a suffix to the name of a computer file. The extension indicates a characteristic of the file contents or its intended use.

• 3DS – 3D Studio
• 906 – Calcomp plotter
• AAC – Advanced Audio Coding (Mac)
• ABC – A Program’s Master Index
• ABK – CorelDRAW auto backup
• ACL – CorelDRAW keyboard accelerator
• AD – After Dark image
• ADM – After Dark MultiModule
• ADR – After Dark Randomizer
• AFM – Adobe font metrics
• AG4 – Access G4 document imaging
• AI – Adobe Illustrator graphics,
• AI – Encapsulated PostScript header
• AIF Digital audio (Mac)
• AIFC – Digital audio (Mac)
• AJAX – Asynchronous JavaScript And XML
• ALB – JASC Image Commander
• ANI – Animated cursor
• ANN – Windows help annotations
• ANS – ANSI text
• ARC – ARC, ARC+ compressed archive
• ARJ – Compressed archive (Jung)
• ART – Xara Studio drawing
• ASA – ASP info
• ASAX – ASP.NET file
• ASC – ASCII file
• ASCX – ASP.NET file
• ASD – Word temporary document
• ASF – Advanced Streaming Format
• ASM – Assembly source code
• ASMX – ASP.NET file
• ASP – Active Server Page
• ASPX – ASP.NET file
• ASX – NetShow file
• ATT – AT&T Group IV fax
• AU – Digital audio (Sun)
• AVI – Microsoft movie format
• AXD – Actrix drawing
• BAK – Backup
• BAS – BASIC source code
• BAT – DOS, OS/2 batch file
• BFC – Windows briefcase document
• BIN – Driver, overlay
• BM1 – Apogee BioMenace file
• BML – Bookmark library (SyncURL)
• BMP – Windows & OS/2 bitmap
• BMK – Windows help bookmarks
• BMS – BlackMagic script
• BRK – Brooktrout fax
• BS1 – Apogee Blake Stone file
• C – C source code
• CAB – Microsoft compressed format for distribution
• CAL – Windows calendar
• CAL – SuperCalc spreadsheet
• CAL – CALS raster and vector formats
• CAP – Ventura Pub. captions
• CAL – CALS raster and vector formats
• CCB – Visual Basic animated button
• CCH – Corel Chart
• CDA – CD audio track
• CDR – CorelDRAW vector graphics
• CDT – CorelDRAW template
• CDX – CorelDRAW compressed drawing
• CDX – FoxPro and Clipper index
• CFG – Configuration
• CGM – CGM vector graphics
• CH3 – Harvard Graphics chart
• CHP – Ventura Pub. chapter
• CHK – DOS/Windows corrupted file (Chkdsk)
• CIF – Ventura Pub. chapter info.
• CIT – Intergraph scanned image
• CK – iD/Apogee Commander Keen
• COB – COBOL source code
• COB – Truespace 3-D file
• CLP – Windows clipboard
• CLS – Visual Basic class module
• CMF – Corel metafile
• CMP – JPEG bitmap, LEAD bitmap
• CMP – RichLink composed format
• CMX – Corel clip art
• CMV – Corel Presentation Exchange
• CNT – Windows help contents
• COM – Executable program
• CPD – Fax cover document
• CPE – Fax cover document
• CPI – DOS code page
• CPL – Windows control panel applets
• CPL – Corel color palette
• CPP – C++ source code
• CPR – Knowledge Access bitmap
• CPR – Corel Presents presentation
• CPT – Corel Photopaint image
• CPX – Corel Presentation Exchange
• CRD – Cardfile file
• CRP – Corel Presents runtime presentation
• CSC – Corel script
• CSS – Cascading Style Sheet
• CSV – Comma delimited
• CT – Scitex CT bitmap
• CUR – Cursor
• CV5 – Canvas 5 vector/bitmap
• DAT – Data
• DAT – WordPerfect merge data
• DB – Paradox table
• DBF – dBASE database
• DBT – dBASE text
• DBX – DATABEAM bitmap
• DCA – IBM text
• DCM – DICOM medical image
• DCS – Color separated EPS format
• DCX – Intel fax image
• DCT – Dictionary
• DEF – Definition
• DG – Autotrol vector graphics
• DGN – Intergraph vector graphics
• DIB – Windows DIB bitmap
• DIC – Dictionary
• DIF – Spreadsheet
• DISCO – Publishing and Discovering Web Services
• DLG – Dialogue script
• DLL – Dynamic link library
• DOC – Document (MS Word 2003-2007)
• DOCX – Document (MS Word 2008)
• DOT – Word template
• DOX – MultiMate V4.0 document
• DPI – Pointline bitmap
• DRV – Driver
• DRW – Designer vector graphics (Version 2.x, 3.x)
• DS4 – Designer vector graphics (Version 4.x)
• DSF – Designer vector graphics (Version 6.x)
• DSML – Directory Services Markup Language
• DWG – AutoCAD vector format
• DX – Autotrol document imaging
• DXF – AutoCAD vector format
• ED5 – EDMICS bitmap (DOD)
• EMF – Enhanced Windows metafile
• EPS – Encapsulated PostScript
• ESI – Esri plot file (vector)
• EVY – Envoy document
• EXE – Executable program
• FAX – Various fax formats
• FDX – Force index
• FH3 – Freehand 3
• FLC – Autodesk animation
• FLD – Hijaak thumbnail folder
• FLI – Autodesk animation
• FLT – Graphics conversion filter
• FMT – dBASE Screen format
• FMV – FrameMaker raster & vector graphics
• FNT – Windows font
• FOG – Fontographer font
• FON – Windows bitmapped font,
• FON – Telephone file
• FOR – FORTRAN source code
• FOT – Windows TrueType font info.
• FOX – FoxBase compiled program
• FM3 – Format info for 1-2-3 Version 3
• FP1 – Flying Pigs for Windows data
• FPX – FlashPix bitmap
• FRM – dBASE report layout
• FTG – Windows help file links
• FTS – Windows help text search index
• G4 – GTX RasterCAD (raster into vector)
• GAL – Corel Multimedia Manager album
• GCA – IBM MO:DCA – GOCA vector graphics
• GDF – GDDM format
• GED – Arts & Letters graphics
• GEM – GEM vector graphics
• GFI – Genigraphics presentation link
• GFX – Genigraphics presentation link
• GID – Windows help global index
• GIF – CompuServe bitmap
• GIM – Genigraphics presentation link
• GIX – Genigraphics presentation link
• GNA – Genigraphics presentation link
• GNX – Genigraphics presentation link
• GP4 – CALS Group IV – ITU Group IV
• GRA – Microsoft graph
• GRF – Micrografx Charisma vector graphics
• GRP – Windows ProgMan Group
• GWX – Genigraphics presentation link
• GWZ – Genigraphics presentation link
• GX1 – Show Partner bitmap
• GX2 – Show Partner bitmap
• GZ – UNIX Gzip
• H – C header
• HED – HighEdit document
• HGL – HP Graphics language
• HLP – Help text
• HPJ – Visual Basic help project
• HPP – C++ program header
• HPL – HP Graphics language
• HQX – BinHex format
• HT – HyperTerminal
• HTM – HTML document (Web page)
• HTML – HTML document (Web page)
• HTX – HTML extension file
• HYC – WordPerfect hypen list
• ICA – IBM MO:DCA – IOCA bitmap
• ICB – Targa bitmap
• ICO – Windows icon
• IDC – Internet Database Connector
• IDD – MIDI instrument definition
• IDE – Development environment configuration
• IDX – FoxBase index
• IFF – Amiga bitmap
• IGF – Inset Systems (Hijaak) raster & vector graphics
• IL – Icon library (hDC Computer)
• IMG – ISO 9660 CD-ROM image
• IMG – Macintosh image file
• IMG – GEM Paint bitmap
• INF – Setup information
• INI – Initialization
• JFF – JPEG bitmap
• JIF – JPEG bitmap
• JPG – JPEG bitmap
• JS – JavaScript file
• JT – JT Fax
• JTF – JPEG bitmap
• KDC – Kodak Photo bitmap
• KFX – Kofax Group IV fax
• KYE – Kye game program data
• LBL – dBASE label
• LBM – Deluxe Paint graphics
• LEG – Legacy text
• LIB – Function library
• LIT – Microsoft Reader file
• LOG – Log file
• LNK – Windows 9x/NT shortcut
• LQT – Liquid Audio
• LSN – Topic list (CDE)
• LST – List
• LV – LaserView Group IV
• LZH – LHARC compressed
• LZS – Skyroads program data
• M1V – MPEG file
• M3U – MPEG file
• MAC – MacPaint bitmap
• MAK – Visual Basic/MS C++ project
• MAP – Link editor map
• MB1 – Apogee Moster Bash file
• MBX – Mailbox (e-mail)
• MCS – MathCAD format
• MCW – Word for Macintosh document
• MDB – Access database
• MEL – Maya script
• MET – OS/2 Metafile
• MEU – Menu items
• MDX – dBASE IV multi-index
• MID – MIDI sound file
• MID – Eudora script file
• MIL – Same as GP4
• MIX – PhotoDraw file
• MME – MIME-encoded file
• MMF – Microsoft mail file
• MMM – Macromind animation format
• MOD – Eudora script file
• MOV – QuickTime movie
• MPA – MPEG file
• MP2 – MPEG file
• MP2V – MPEG file
• MP3 – MPEG-1 Layer 3 audio
• MPE – MPEG file
• MPEG – MPEG file
• MPG – MPEG file
• MPP – Microsoft Project
• MRK – Informative Graphics markup file
• MSG – Message file
• MSP – Microsoft Paint bitmap
• MUS – Music
• MVB – Microsoft Multimedia Viewer
• M1V – MPEG file
• M3D – Corel Motion 3-D
• NAP – NAPLPS format
• NAV – Eudora script file
• NDX – dBASE index
• NDX – CDE index
• NG – Norton Guides text
• NLM – NetWare NLM program
• NTZ – InVircible antivirus blueprint
• O – UNIX machine language
• OAZ – OAZ Fax
• OBD – Microsoft Office binder
• OBJ – Machine language,
• OBJ – Wavefront 3-D file
• OBZ – Microsoft Office wizard
• OEB – Open eBook publication
• OFX – Open Financial Exchange
• OLB – OLE object library
• OLE – OLE object
• OPF – Open package file
• ORG – Organizer file
• OTF – OpenType font
• OVL – Overlay module
• OVR – Overlay module
• OZM – Sharp Organizer memo bank
• OZP – Sharp Organizer telephone bank
• OUT – Encyclopedia definitions
• P10 – Tektronic Plot 10
• PAL – Windows palette
• PAS – Pascal source code
• PAT – CorelDRAW pattern
• PBD – PowerBuilder dynamic library
• PBK – Microsoft Phonebook
• PBM – Portable Bitmap
• PCL – HP LaserJet series
• PCD – Photo CD bitmap
• PCM – LaserJet cartridge info.
• PCS – PICS animation
• PCT – PC Paint bitmap,
• PCT – Macintosh PICT bitmap & vector graphics
• PCW – PC Write document
• PCX – PC Paintbrush bitmap
• PDF – Portable Document Format (Acrobat),
• PDF – Printer driver,
• PDF – Printer description (QuarkXpress)
• PDV – PC Paintbrush printer driver
• PDW – HiJaak vector graphics
• PFA – Type 1 font (ASCII)
• PFB – Type 1 font (encrypted)
• PFM – Windows Type 1 font metrics
• PGL – HPGL 7475A plotter (vector graphics)
• PIC – Various vector formats:
• PIC – Lotus 1-2-3,
• PIC – Micrografx Draw,
• PIC – Mac PICT format,
• PIC – IBM Storyboard bitmap
• PIF – Windows info. for DOS programs,
• PIF – IBM Picture Interchange
• PIN – Epic Pinball data
• PIX – Inset Systems raster & vector graphics
• PL – Perl script
• PLT – AutoCAD plotter file
• PLT – HPGL plotter file
• PM – PageMaker graphics/text
• PMx – PageMaker document (x=ver.)
• PML – PageMaker library
• PNG – PNG bitmap
• POV – POV-Ray ray tracing
• PP4 – Picture Publisher 4
• PPD – PostScript printer description
• PPM – Portable Pixelmap
• PPS – PowerPoint Slideshow
• PPT – PowerPoint
• PRC – Resource (text or program) file (3com PalmPilot)
• PRD – Microsoft Word printer driver
• PRE – Lotus Freelance
• PRG – dBASE source code
• PRN – XyWrite printer driver,
• PRN – Temporary print file
• PRS – WordPerfect printer driver,
• PRS – Harvard Graphics
• PRT – Formatted text
• PS – PostScript page description
• PSD – Photoshop native format
• PSR – Powersoft report
• PTx – PageMaker template (x=ver.)
• PUB – Microsoft Publisher publication,
• PUB – Ventura Publisher publication
• PUZ – Across puzzle
• PVK – Private Key
• PWL – Windows password list
• P10 – Tektronix Plot10 plotter (vector graphics)
• QBO – QuickBooks Online
• QBW – QuickBooks
• QFX – Quicken Financial Exchange
• QIF – Quick Interchange Format
• QLB – Quick programming library
• QLC – ATM font info
• QT – QuickTime movie
• QTM – QuickTime movie
• RA – Real Audio file
• RAM – Real Audio file
• RAS – Sun bitmap
• RAW – 3-D file (open standard)
• RC – Resource script
• REC – Recorder file
• REG – Registration file
• RES – Programming resource
• RFT – DCA/RFT document
• RGB – SGI bitmap
• RIA – Alpharel Group IV bitmap
• RIB – Renderman graphics
• RIC – Roch FaxNet
• RIX – RIX virtual screen
• RLC – CAD Overlay ESP (Image Systems)
• RLE – Compressed (run length encoded)
• RLF – RichLink compiled format
• RM – Real Media file
• RMI – MIDI music
• RMM – Real Media file
• RND – AutoShade rendering format
• RNL – GTX Runlength bitmap
• RTF – Microsoft text/graphics
• R8P – LaserJet portrait font
• R8L – LaserJet landscape font
• RV – Real Video file
• SAM – Ami Pro document
• SAT – ACIS 3-D model
• SAV – Saved file
• SBP – IBM Storyboard graphics/Superbase text
• SC – Paradox source code
• SC? – ColoRIX raster (?=res.)
• SC2 – Microsoft Schedule+ 7
• SCD – Microsoft Schedule+ 7
• SCH – Microsoft Schedule+ 1
• SCM – ScreenCam movie
• SCP – Dial-up Networking script
• SCR – Windows screen saver
• SCR – Generic script,
• SCR – Fax image
• SCR – dBASE screen layout,
• SCT – Lotus Manuscript screen capture text,
• SCT – Scitex bitmap
• SDL – SmartDraw library
• SDR – SmartDraw vector graphics
• SDT – SmartDraw template
• SET – Setup parameters
• SFP – LaserJet portrait font
• SFL – LaserJet landscape font
• SFS – PCL 5 scalable font
• SGI – SGI bitmap
• SHB – Corel Show
• SHG – Segmented HyperGraphic (imagemap Windows help)
• SHS – OLE2 package (can contain executables)
• SHW – Corel Show
• SLD – AutoCAD slide
• SLK – SYLK format (spreadsheets)
• SMI – SMIL multimedia
• SND – Digital audio
• SPD – Speedo scalable font
• SPML – Service Provisioning Markup Language
• STY – Ventura Pub. style sheet
• SUN – Sun bitmap
• SVX – Amiga sound file
• SWF – Shockwave file
• SY3 – Harvard Graphics symbol
• SYL – SYLK format (spreadsheets)
• SYS – DOS, OS/2 driver
• TAL – Adobe Type Align shaped text
• TAR – Tape archive
• TAZ – UNIX Gzip archive
• TDF – Speedo typeface definition
• TFM – Intellifont font metrics
• TGA – TARGA bitmap
• TGZ – UNIX Gzip archive
• TIF – TIFF bitmap
• TLB – OLE type library
• TMP – Temporary
• TOC – Table of contents
• TRM – Terminal file
• TTC – TrueType font compressed
• TTF – TrueType font
• TXT – ASCII text
• USP – LaserJet portrait font
• USL – LaserJet landscape font
• VBP – Visual Basic project
• VBX – Visual Basic custom control
• VBS – Visual Basic script
• VCF – vCard file
• VDA – Targa bitmap
• VGR – Ventura Pub. chapter info.
• VOC – Sound Blaster sound
• VOX – Voxware compressed audio
• VP – Ventural Publisher publication
• VSD – Visio drawing
• VST – Targa bitmap
• VUE – dBASE relational view
• WAV – Digital Audio (Windows)
• WAX – WMA metafile (location of WMA file)
• WB? – Quattro Pro spreadsheet (?=version)
• WBK – Microsoft Word backup
• WBT – WinBatch file
• WCM – WordPerfect macro
• WDB – Microsoft works data file
• WGP – Wild Board games data
• WID – Font width table
• WIF – Wavelet image
• WIZ – Microsoft Word wizard
• WKQ – Quattro spreadsheet
• WK1 – Lotus ver. 2.x
• WK3 – Lotus ver. 3.x & Windows
• WK4 – Lotus ver. 4.x
• WKS – Lotus 1-2-3 ver. 1a spreadsheet
• WMA – Windows Media Audio (ASF file)
• WMF – Windows Metafile
• WMV – Windows Media video (ASF file)
• WPD – Corel WordPerfect,
• WPD – Windows printer description
• WP? – WordPerfect document (?=version)
• WPG – WordPerfect raster & vector graphics
• WPM – WordPerfect macro
• WPT – WordPerfect template
• WQ? – Quattro Pro for DOS (?=version)
• WPS – Microsoft Works document
• WRI – Windows Write document
• WRK – Sympohony spreadsheet
• WRL – VRML page
• WS? – WordStar for Windows (?=version)
• WSD – WordStar 2000 document
• WSH – Windows Scrip Host properties
• WVL – Wavelet compressed file
• WVX – WMV metafile (location of WMV file)
• XAR – Corel Xara drawing
• XBM – X Window bitmap
• XFX – JetFax
• XLA – Excel add-in
• XLB – Excel toolbar
• XLC – Excel chart
• XLD – Excel dialogue
• XLK – Excel backup
• XLM – Excel macro
• XLS – Excel spreadsheet
• XLT – Excel template
• XLW – Excel project
• XML – eXtensible Markup Language
• XPM – X Window pixelmap
• XSD – XML schema
• XWD – X Window dump
• XY? – XyWrite document (?=version)
• XYW – XyWrite for Windows document
• Z – UNIX Gzip archive
• ZIP – PKZIP compressed
• ZOO – Zoo compressed
• $$$ – Temporary