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This is a
list of , organized by type. computer file formats Filename extensions are usually noted in parentheses if they differ from the format name or abbreviation. In theory, using the basic Latin alphabet (A–Z) and numerals (0-9), a three character extension can yield up to 46,656 combinations; (26+10) 3. When other characters are accepted, the maximum number is increased (very possibly to a number consisting of at least six digits). Many operating systems do not limit filenames to a single extension shorter than 4 characters, as was common with some operating systems that supported the FAT file system. Examples of operating systems that do not impose this limit include Unix-like systems. Also, Microsoft Windows NT, 95, 98, and Me do not have a three character limit on extensions for 32-bit or 64-bit applications on file systems other than pre-Windows 95/Windows NT 3.5 versions of the FAT file system. Some filenames are given extensions longer than three characters. Archive and compressed [edit ] .cab — A cabinet (.cab) file is a library of compressed files stored as a single file. Cabinet files are used to organize installation files that are copied to the user's system. [1 ] .?Q? — files compressed by the SQ program 7z — 7-Zip compressed file AAC — Advanced Audio Coding ace — ACE compressed file ALZ — ALZip compressed file APK — Applications installable on Android AT3 — Sony's UMD Data compression .bke — BackupEarth.com Data compression ARC ARJ — ARJ compressed file BA — Scifer Archive (.ba), Scifer External Archive Type big — Special file compression format used by Electronic Arts for compressing the data for many of EA's games BIK (.bik) — Bink Video file. A video compression system developed by RAD Game Tools BIN — compressed Archive. can be read and used by cd-roms and java, Extractable by 7-zip and WINRAR BKF (.bkf) — Microsoft backup created by NTBACKUP.EXE bzip2 — (.bz2) bld — Skyscraper Simulator Building c4 — JEDMICS image files, a DOD system cab — Microsoft Cabinet cals — JEDMICS image files, a DOD system CLIPFLAIR (.clipflair, .clipflair.zip) - ClipFlair Studio  component saved state file (contains component options in XML, extra/attached files and nested components' state in child .clipflair.zip files – activities are also components and can be nested at any depth) cpt/sea — Compact Pro ( Macintosh) DAA — Closed-format, Windows-only compressed disk image deb — Debian install package DMG — an Apple compressed/encrypted format DDZ — a file which can only be used by the "daydreamer engine" created by "fever-dreamer", a program similar to RAGS, it's mainly used to make somewhat short games. DPE — Package of AVE documents made with Aquafadas digital publishing tools. .egg — Alzip Egg Edition compressed file EGT (.egt) — EGT Universal Document also used to create compressed cabinet files replaces .ecab ECAB (.ECAB, .ezip) — EGT Compressed Folder used in advanced systems to compress entire system folders, replaced by EGT Universal Document ESS (.ess) — EGT SmartSense File, detects files compressed using the EGT compression system. GHO (.gho, .ghs) — Norton Ghost gzip (.gz) — Compressed file IPG (.ipg) — Format in which Apple Inc. packages their iPod games. can be extracted through Winrar jar — ZIP file with manifest for use with Java applications. LBR (.Lawrence) — Lawrence Compiler Type file LBR — Library file LQR — LBR Library file compressed by the SQ program. LHA (.lzh) — Lempel, Ziv, Huffman lzip (.lz) — Compressed file lzo lzma LZX (algorithm) MBRWizard archive (.mbw) MPQ Archives (.mpq) — Used by Blizzard games MacBinary (.bin) NTH (.nth) — Nokia Theme Used by Nokia Series 40 Cellphones PAK — Enhanced type of .ARC archive Parchive — (.par, .par2) Portable Application File — (.paf) PYK (.pyk) Compressed File Quake 3 archive (.pk3) — (See note on Doom³) Doom³ archive (.pk4) — (Opens similarly to a zip archive.) RAR Rar Archive (.rar) — for multiple file archive (rar to .r01-.r99 to s01 and so on) RAG / RAGS game file, a game playable in the RAGS game-engine, a free program which both allows people to create games, and play games, games created have the file format "RAG game file" RPM — Red Hat package/installer for Fedora, RHEL, and similar systems. SEN Scifer Archive (.sen) — Scifer Internal Archive Type sit/sitx — StuffIt ( Macintosh) SKB — Google Sketchup Backup File tar — group of files, packaged as one file .tar.gz, .tgz — gzipped tar file TB (.tb) — Tabbery Virtual Desktop Tab file TIB (.tib) — Acronis True Image backup uha — Ultra High Archive Compression .uue — user unifile element VIV — Archive format used to compress data for several video games, including Need For Speed: High Stakes. VOL — unknown archive VSA — Altiris Virtual Software Archive WAX — Wavexpress — A ZIP alternative optimized for packages containing video, allowing multiple packaged files to be all-or-none delivered with near-instantaneous unpacking via NTFS file system manipulation. .tar.xz — an xz compressed tar file. (Based on LZMA2.) Z — Unix compress file zoo — based on LZW zip — popular compression format Physical recordable media archiving [edit ] ADZ — The GZip-compressed version of ADF. DMS — , a disk-archiving system native to the Amiga. Disk Masher System DSK — For archiving floppy disks from a number of other platforms, including the ZX Spectrum and Amstrad CPC. D64 — An archive of a Commodore 64 floppy disk. SDI — System Deployment Image, used for archiving and providing "virtual disk" functionality. MDS — DAEMON tools native disc image file format used for making images from optical CD-ROM, DVD-ROM, HD DVD or Blu-ray Disc. It comes together with MDF file and can be mounted with DAEMON Tools. MDX — New DAEMON Tools file format that allows to get one MDX disc image file instead of two (MDF and MDS). DMG — Macintosh disk image files
(MPEG-1 is found in a .DAT file on a video CD.)
CDI — DiscJuggler image file CUE — CDRWrite CUE image file CIF — Easy CD Creator .cif format C2D — Roxio / WinOnCD .c2d format DAA — PowerISO .daa format CCD,SUB,IMG — CloneCD image file B6T — BlindWrite 5/6 image file Computer-aided [edit ] Computer-aided is a prefix for several categories of tools (e.g., design, manufacture, engineering) which assist professionals in their respective fields (e.g., machining, architecture, schematics). Computer-aided design (CAD) [edit ] Computer-aided design (CAD) software assists engineers, architects and other design professionals in project design. 3dmlw — ( 3D Markup Language for Web) files 3dxml — Dassault Systemes graphic representation ACP — VA Software VA — Virtual Architecture CAD file AMF — Additive Manufacturing File Format AEC — DataCAD drawing format [2 ] AR — Ashlar-Vellum Argon — 3D Modeling ART — ArtCAM model ASC — BRL-CAD Geometry File (old ASCII format) ASM — Solidedge Assembly, Pro/ENGINEER Assembly BIN, BIM — Data Design System DDS-CAD BREP — Open CASCADE 3D model (shape) CCC — CopyCAD Curves CCM — CopyCAD Model CCS — CopyCAD Session CAD — CadStd CATDrawing — CATIA V5 Drawing document CATPart — CATIA V5 Part document CATProduct — CATIA V5 Assembly document CATProcess — CATIA V5 Manufacturing document cgr — CATIA V5 graphic representation file CO — Ashlar-Vellum Cobalt — parametric drafting and 3D modeling DRW — Caddie Early version of Caddie drawing — Prior to Caddie changing to DWG DFT — Solidedge Draft DGN — MicroStation design file DGK — Delcam Geometry DMT — Delcam Machining Triangles DXF — ASCII Drawing Interchange file format — AutoCAD DWB — VariCAD drawing file DWF — AutoDesk's Web Design Format; AutoCAD & Revit can publish to this format; similar in concept to PDF files; AutoDesk Design Review is the reader DWG — AutoCAD and Open Design Alliance applications, Autodesk Inventor Drawing file EASM — SolidWorks eDrawings assembly file EDRW — eDrawings drawing file EMB — Wilcom ES Designer Embroidery CAD file EPRT — eDrawings part file ESW — AGTEK format EXCELLON — Excellon file EXP — Drawing Express file format FM — FeatureCAM Part File FMZ — FormZ Project file G — BRL-CAD Geometry File GBR — Gerber file GLM — KernelCAD model GRB — T-FLEX CAD File GTC — GRAITEC Advance file format IAM — Autodesk Inventor Assembly file ICD — IronCAD 2D CAD file IDW — Autodesk Inventor Drawing file IFC — buildingSMART for sharing AEC and FM data IGES — Initial Graphics Exchange Specification Intergraph's Intergraph Standard File Formats IPN — Autodesk Inventor Presentation file IPT — Autodesk Inventor Part file JT (visualization format) Jupiter Tesselation MCD — Monu-CAD (Monument/Headstone Drawing file) model — CATIA V4 part document OCD — Orienteering Computer Aided Design (OCAD) file PAR — Solidedge Part PIPE — PIPE-FLO Professional Piping system design file PLN — ArchiCad project PRT — NX (recently known as Unigraphics), Pro/ENGINEER Part, CADKEY Part PSM — Solidedge Sheet PSMODEL — PowerSHAPE Model PWI — PowerINSPECT File PYT — Pythagoras File SKP — SketchUp Model RLF — ArtCAM Relief RVM - AVEVA PDMS 3D Review model RVT — AutoDesk Revit project files RFA — AutoDesk Revit family files S12 — Spirit file, by Softtech SCAD — OpenSCAD 3D part model SCDOC — SpaceClaim 3D Part/Assembly SLDASM — SolidWorks Assembly drawing SLDDRW — SolidWorks 2D drawing SLDPRT — SolidWorks 3D part model Softimage's dotXSI STEP — Standard for the Exchange of Product model data STL — Stereo Lithographic data format used by various CAD systems and stereo lithographic printing machines. TCT — TurboCAD drawing template TCW — TurboCAD for Windows 2D and 3D drawing UNV — I-DEAS I-DEAS (Integrated Design and Engineering Analysis Software) VC6 — Ashlar-Vellum Graphite — 2D and 3D drafting VLM — Ashlar-Vellum Vellum, Vellum 2D, Vellum Draft, Vellum 3D, DrawingBoard VS — Ashlar-Vellum Vellum Solids WRL — Similar to STL, but includes color. Used by various CAD systems and 3D printing rapid prototyping machines. Also used for VRML models on the web. XE — Ashlar-Vellum Xenon — for Associative 3D Modeling Electronic design automation (EDA) [edit ] Electronic design automation (EDA), or electronic computer-aided design (ECAD), is specific to the field of electrical engineering. BRD — Board file for EAGLE Layout Editor, a commercial PCB design tool BSDL — Description language for testing through JTAG CDL — Transistor-level netlist format for IC design CPF — Power-domain specification in SoC implementation (see also UPF) DEF — Gate-level layout DSPF — Detailed Standard Parasitic Format, Analog-level parasitics of interconnections in IC design EDIF — Vendor neutral gate-level netlist format FSDB — Analog waveform format (see also Waveform viewer) GDSII — Format for PCB and layout of integrated circuits HEX — ASCII-coded binary format for memory dumps LEF — Library Exchange Format, physical abstract of cells for IC design LIB — Library modeling ( function, timing) format MS12 — NI Multisim file OASIS — Open Artwork System Interchange Standard OpenAccess — Design database format with APIs SDC — Synopsys Design Constraints, format for synthesis constraints SDF — Standard for gate-level timings SPEF — Standard format for parasitics of interconnections in IC design SPI, CIR — SPICE Netlist, device-level netlist and commands for simulation SREC, S19 — S-record, ASCII-coded format for memory dumps STIL — Standard Test Interface Language, IEEE1450-1999 standard for Test Patterns for IC SV — SystemVerilog source file S*P — Touchstone/ EEsof Scattering parameter data file — multi-port blackbox performance, measurement or simulated UPF — Standard for Power-domain specification in SoC implementation V — Verilog source file VCD — Standard format for digital simulation waveform VHD, VHDL — VHDL source file WGL — Waveform Generation Language, format for Test Patterns for IC Test technology [edit ]
Files output from
Automatic Test Equipment or post-processed from such. Database [edit ] 4DB — 4D database Structure file 4DD — 4D database Data file 4DIndy — 4D database Structure Index file 4DIndx — 4D database Data Index file 4DR — 4D database Data resource file (in old 4D versions) ACCDB — Microsoft Database ( Microsoft Office Access 2007 and later) ACCDE — Compiled Microsoft Database ( Microsoft Office Access 2007 and later) ADT — Sybase Advantage Database Server (ADS) APR — Lotus Approach data entry & reports BOX — Lotus Notes Post Office mail routing database CHML — Krasbit Technologies Encrypted database file for 1 click integration between contact management software and the chameleon(tm) line of imaging workflow solutions DAF — Digital Anchor data file DAT — DOS Basic DAT — Intersystems Caché database file DB — Paradox DB — SQLite DBF — db/dbase II,III,IV and V, Clipper, Harbour/xHarbour, Fox/FoxPro, Oracle EGT — EGT Universal Document, used to compress sql databases to smaller files, may contain original EGT database style. ESS — EGT SmartSense is a database of files and its compression style. Specific to EGT SmartSense EAP — Enterprise Architect Project FDB — Firebird Databases FDB — Navision database file FP, FP3, FP5, and FP7 — FileMaker Pro FRM — MySQL table definition GDB — Borland InterBase Databases GTABLE — Google Drive Fusion Table KEXI — Kexi database file ( SQLite-based) KEXIC — shortcut to a database connection for a Kexi databases on a server KEXIS — shortcut to a Kexi database LDB — Temporary database file, only existing when database is open MDA — Add-in file for Microsoft Access MDB — Microsoft Access database ADP — Microsoft Access project (used for accessing databases on a server) MDE — Compiled Microsoft Database (Access) MDF — Microsoft SQL Server Database MYD — MySQL MyISAM table data MYI — MySQL MyISAM table index NCF — Lotus Notes configuration file NSF — Lotus Notes database NTF — Lotus Notes database design template NV2 — QW Page NewViews object oriented accounting database ODB — LibreOffice Base or OpenOffice Base database ORA — Oracle tablespace files sometimes get this extension (also used for configuration files) PDB — Palm OS Database PDI — Portable Database Image PDX — Corel Paradox database management PRC — Palm OS resource database SQL — bundled SQL queries REC — GNU recutils database REL — Sage Retrieve 4GL data file RIN — Sage Retrieve 4GL index file SDB — StarOffice's StarBase SDF — SQL Compact Database file UDL — Universal Data Link waData — Wakanda (software) database Data file waIndx — Wakanda (software) database Index file waModel — Wakanda (software) database Model file waJournal — Wakanda (software) database Journal file WDB — Microsoft Works Database WMDB — Windows Media Database file — The
CurrentDatabase_360.wmdb file can contain file name, file properties, music, video, photo and playlist information.
Desktop publishing [edit ] Document [edit ]
These files store
formatted text and plain text. Financial records [edit ] Financial data transfer formats [edit ] Font file [edit ] Geographic information system [edit ] Graphical information organizers [edit ] 3DT — 3D Topicscape The database in which the meta-data of a 3D Topicscape is held. A 3D Topicscape is a form of 3D concept map (like a 3D mind-map) used to organize ideas, information and computer files. ATY — 3D Topicscape file, produced when an association type is exported by 3D Topicscape. Used to permit round-trip (export Topicscape, change files and folders as desired, re-import them to 3D Topicscape). CAG — Linear Reference System. FES — 3D Topicscape file, produced when a fileless occurrence in 3D Topicscape is exported to Windows. Used to permit round-trip (export Topicscape, change files and folders as desired, re-import them to 3D Topicscape). MGMF — MindGenius Mind Mapping Software file format. MM — FreeMind mind map file (XML). MMP — Mind Manager mind map file. TPC — 3D Topicscape file, produced when an inter-Topicscape topic link file is exported to Windows. Used to permit round-trip (export Topicscape, change files and folders as desired, re-import them to 3D Topicscape). Graphics [edit ] Color palettes [edit ] ACT — Adobe Color Table. Contains a raw color palette and consists of 256 24-bit RGB colour values. PAL — Microsoft palette file Color management [edit ] ICC/ICM — Color profile conforming the specification of the ICC. Raster graphics [edit ] Raster (or Bitmap) files store images as a group of pixels.
ASE — Adobe Swatch ART — America Online proprietary format BMP — Microsoft Windows Bitmap formatted image BLP — Blizzard Entertainment proprietary texture format CD5 — Chasys Draw IES image CIT — Intergraph is a monochrome bitmap format CPT — Corel PHOTO-PAINT image CR2 — Canon camera raw format. Photos will have this format on some Canon cameras if the quality "RAW" is selected in camera settings. CUT — Dr. Halo image file DDS — DirectX texture file DIB — Device-Independent Bitmap graphic DjVu — DjVu for scanned documents EGT — EGT Universal Document, used in EGT SmartSense to compress PNG files to yet a smaller file Exif — Exchangeable image file format (Exif) is a specification for the image file format used by digital cameras GIF — CompuServe's Graphics Interchange Format GPL — GIMP Palette, using a textual representation of color names and RGB values GRF — Zebra Technologies proprietary format ICNS — file format use for in icons Mac OS X. Contains bitmap images at multiple resolutions and bitdepths with alpha channel. ICO — a file format used for in icons Microsoft Windows. Contains small bitmap images at multiple resolutions and sizes. IFF (.iff, .ilbm, .lbm) — ILBM JNG — a single-frame MNG using JPEG compression and possibly an alpha channel. JPEG, JFIF (.jpg or .jpeg) — Joint Photographic Experts Group — a lossy image format widely used to display photographic images. JP2 — JPEG2000 JPS — JPEG Stereo LBM — Deluxe Paint image file MAX — ScanSoft PaperPort document MIFF — ImageMagick's native file format MNG — Multiple Network Graphics, the animated version of PNG MSP — a file format used by old versions of Microsoft Paint. Replaced with BMP in Microsoft Windows 3.0 NITF — A U.S. Government standard commonly used in Intelligence systems OTA bitmap (Over The Air bitmap) — a specification designed by Nokia for black and white images for mobile phones PBM — Portable bitmap PC1 — Low resolution, compressed Degas picture file PC2 — Medium resolution, compressed Degas picture file PC3 — High resolution, compressed Degas picture file PCF — Pixel Coordination Format PCX — a lossless format used by ZSoft's PC Paint, popular at one time on DOS systems. PDN — Paint.NET image file PGM — Portable graymap PI1 — Low resolution, uncompressed Degas picture file PI2 — Medium resolution, uncompressed Degas picture file. Also Portrait Innovations encrypted image format. PI3 — High resolution, uncompressed Degas picture file PICT, PCT — Apple Macintosh PICT image PNG — Portable Network Graphic (lossless, recommended for display and edition of graphic images) PNM — Portable anymap graphic bitmap image PNS — PNG Stereo PPM — Portable Pixmap (Pixel Map) image PSB — Adobe Photoshop Big image file (for large files) PSD, PDD — Adobe Photoshop Drawing PSP — Paint Shop Pro image PX — Pixel image editor image file PXM — Pixelmator image file PXR — Pixar Image Computer image file QFX — QuickLink Fax image RAW — General term for minimally processed image data (acquired by a digital camera) RLE — a run-length encoded image SCT — Scitex Continuous Tone image file SGI, RGB, INT, BW — Silicon Graphics Image TGA (.tga, .targa, .icb, .vda, .vst, .pix) — Truevision TGA (Targa) image TIFF (.tif or .tiff) — Tagged Image File Format (usually lossless, but many variants exist, including lossy ones) TIFF/EP (.tif or .tiff) — ISO 12234-2; tends to be used as a basis for other formats rather than in its own right. VTF — Valve Texture Format XBM — X Window System Bitmap XCF — GIMP image (from Gimp's origin at the eXperimental Computing Facility of the University of California) XPM — X Window System Pixmap Vector graphics [edit ] Vector graphics use geometric primitives such as points, lines, curves, and polygons to represent images. 3DV — 3-D wireframe graphics by Oscar Garcia AMF — Additive Manufacturing File Format AWG — Ability Draw AI — Adobe Illustrator Document CGM — Computer Graphics Metafile an ISO Standard CDR — CorelDRAW Document CMX — CorelDRAW vector image DXF — ASCII Drawing Interchange file Format, used in AutoCAD and other CAD-programs E2D — 2-dimensional vector graphics used by the editor which is included in JFire EGT — EGT Universal Document, EGT Vector Draw images are used to draw vector to a website EPS — Encapsulated Postscript FS — FlexiPro file GBR — Gerber file ODG — OpenDocument Drawing SVG — Scalable Vector Graphics, employs XML Scene description languages (3D vector image formats) STL — Stereo Lithographic data format (see STL (file format)) used by various CAD systems and stereo lithographic printing machines. See above. VRML Uses .wrl extension — Virtual Reality Modeling Language, for the creation of 3D viewable web images. X3D SXD — OpenOffice.org XML (obsolete) Drawing V2D — voucher design used by the voucher management included in JFire VND — Vision numeric Drawing file used in TypeEdit, Gravostyle. WMF — Windows Meta File EMF — Enhanced (Windows) MetaFile, an extension to WMF ART — Xara — Drawing (superseded by XAR) XAR — Xara — Drawing 3-D graphics [edit ] 3D graphics are 3D models that allow building models in real-time or non real-time 3D rendering. Links and shortcuts [edit ] Mathematical [edit ] [edit ] .8BF files — plugins for some photo editing programs including Adobe Photoshop, Paint Shop Pro, GIMP and Helicon Filter. .a — Objective C native static library a.out — (no suffix for executable image, .o for object files, .so for shared object files) classic UNIX object format, now often superseded by ELF APK — Android Package APP — A folder found on Mac OS X systems containing program code and resources, appearing as a single file. BAC — an executable image for the RSTS/E system, created using the BASIC-PLUS COMPILE command [5 ] BPL — a Win32 PE file created with Borland Delphi or C++Builder containing a package. Bundle — a Macintosh plugin created with Xcode or make which holds executable code, data files, and folders for that code. .Class — used in Java COFF (no suffix for executable image, .o for object files) — UNIX Common Object File Format, now often superseded by ELF COM files — commands used in DOS DCU — Delphi compiled unit DOL — the file format used by the Gamecube and Wii, short for Dolphin the codename of the Gamecube. .EAR — archives of Java enterprise applications ELF — (no suffix for executable image, .o for object files, .so for shared object files) used in many modern Unix and Unix-like systems, including Solaris, other System V Release 4 derivatives, Linux, and BSD) expander (see bundle) DOS executable ( .exe — used in DOS) .IPA — apple IOS application executable file. Another form of zip file. .JAR — archives of Java class files .XPI — PKZIP archive that can be run by Mozilla web browsers to install software) Mach-O — (no suffix for executable image, .o for object files, .dylib and .bundle for shared object files) Mach based systems, notably native format of Mac OS X) NetWare Loadable Module (.NLM) — the native 32-bit binaries compiled for Novell's NetWare Operating System (versions 3 and newer) New Executable ( .EXE — used in multitasking ("European") MS-DOS 4.0, 16-bit Microsoft Windows, and OS/2) .o — un-linked object files directly from the compiler. Portable Executable ( .EXE, .DLL — used in Microsoft Windows and some other systems) Preferred Executable Format — ( Mac OS versions 9 and earlier; compatible with Mac OS X via the Classic emulator) .s1es — Executable used for S1ES learning system. .so — shared library, typically ELF Value Added Process (.VAP) — the native 16-bit binaries compiled for Novell's NetWare Operating System (version 2, NetWare 286, Advanced NetWare, etc.) .WAR — archives of Java Web applications XBE — Xbox executable .XAP — Windows Phone package XCOFF — (no suffix for executable image, .o for object files, .a for shared object files) extended COFF, used in AIX XEX — Xbox 360 executable Object extensions [edit ] .VBX — Visual Basic extensions .OCX — Object Control extensions .TLB — Windows Type Library Page description language [edit ] Personal information manager [edit ] Presentation [edit ] Project management software [edit ] Reference management software [edit ]
Formats of files used for bibliographic information (
citation) management. Scientific data (data exchange) [edit ] FITS (Flexible Image Transport System) — standard data format for astronomy (.fits) Silo — a storage format for visualization developed at Lawrence Livermore National Laboratory SPC — spectroscopic data EAS3 — binary file format for structured data OST (Open Spatio-Temporal) — extensible, mainly images with related data, or just pure data; meant as an open alternative for microscope images CCP4 — X-ray crystallography voxels (electron density) MRC — voxels in cryo-electron microscopy HITRAN — spectroscopic data with one optical/infrared transition per line in the ASCII file (.hit) Simple Data Format (SDF) — a platform-independent, precision-preserving binary data I/O format capable of handling large, multi-dimensional arrays. Multi-domain [edit ] Meteorology [edit ] GRIB — Grid In Binary, WMO format for weather model data BUFR — WMO format for weather observation data PP — UK Met Office format for weather model data NASA-Ames — Simple text format for observation data. First used in aircraft studies of the atmosphere. Chemistry [edit ] Mathematics [edit ] Biology [edit ] Molecular biology and bioinformatics: Biomedical imaging [edit ] Digital Imaging and Communications in Medicine (DICOM) (.dcm) Neuroimaging Informatics Technology Initiative (NIfTI) .nii — single-file (combined data and meta-data) style .nii.gz — gzip-compressed, used transparently by some software, notably the FMRIB Software Library (FSL) .gii — single-file (combined data and meta-data) style; NIfTI offspring for brain surface data .img,.hdr — dual-file (separate data and meta-data, respectively) style AFNI data, meta-data (.BRIK,.HEAD) Massachusetts General Hospital imaging format, used by the FreeSurfer brain analysis package .MGH — uncompressed .MGZ — zip-compressed Analyze data, meta-data (.img,.hdr) Signed Differential Mapping (SDM) brain maps and/or distributions (.sdm) Medical Imaging NetCDF (MINC) format, previously based on NetCDF; since version 2.0, based on HDF5 (.mnc) Biomedical signals (time series) [edit ] ACQ — AcqKnowledge File Format for Windows/PC from Biopac Systems Inc., Goleta, CA, USA. BCI2000 — The BCI2000 project, Albany, NY, USA. BDF — BioSemi data format from BioSemi B.V. Amsterdam, Netherlands. BKR — The EEG data format developed at the University of Technology Graz, Austria. CFWB — Chart Data File Format from ADInstruments Pty Ltd, Bella Vista NSW, Australia. DICOM — Waveform An extension of Dicom for storing waveform data ecgML — A markup language for electrocardiogram data acquisition and analysis. EDF/EDF+ — European Data Format. FEF — File Exchange Format for Vital signs, CEN TS 14271. GDF v1.x — The General Data Format for biomedical signals — Version 1.x. GDF v2.x — The General Data Format for biomedical signals — Version 2.x. HL7aECG — Health Level 7 v3 annotated ECG. MFER — Medical waveform Format Encoding Rules OpenXDF — Open Exchange Data Format from Neurotronics, Inc. Gainesville, FL, USA. SCP-ECG — Standard Communication Protocol for Computer assisted electrocardiography EN1064:2007, SIGIF — A digital SIGnal Interchange Format with application in neurophysiology. WFDB — Format of Physiobank XDF — eXtensible Data Format Other Biomedical Formats [edit ] Health Level 7 (HL7) — a framework for exchange, integration, sharing, and retrieval of electronic health information xDT — a family of data exchange formats for medical records Biometric Formats [edit ] CBF — Common Biometric Format, based upon CBEFF 2.0 (Common Biometric Exchange Formats Framework). EBF — Extended Biometric Format. Based on CBF but with S/MIME encryption support and semantic extensions CBFX — XML Common Biometric Format, based upon XCBF 1.1 (OASIS XML Common Biometric Format) EBFX — XML Extended Biometric Format, based on CBFX but with W3C XML Encryption support and semantic extensions Script [edit ] Security [edit ]
Authentication and general encryption formats are listed here.
Certificates and keys [edit ] Encrypted files [edit ]
This section shows file formats for encrypted general data, rather than a specific program's data.
AXX — encrypted file, created with Axcrypt EEA — An encrypted CAB, ostensibly for protecting email attachments TC — virtual encrypted disk container, created by TrueCrypt Password files [edit ] Password files (sometimes called keychain files) contain lists of other passwords, usually encrypted. BPW — encrypted password file created by Bitser password manager KeePass 1 database (.kdb) KeePass 2 database (.kdbx) Signal data (non-audio) [edit ] ACQ — AcqKnowledge File Format for Windows/PC from Biopac BKR — The EEG data format developed at the University of Technology Graz BDF — BioSemi data format — similar to EDF but 24bit CFG — Configuration file for Comtrade data CFWB — Chart Data File Format from ADInstruments DAT — Raw data file for Comtrade data EDF — European data format FEF — File Exchange Format for Vital signs GDF — General data formats for biomedical signals GMS — Gesture And Motion Signal format IROCK — intelliRock Sensor Data File Format MFER — Medical waveform Format Encoding Rules SCP-ECG — Standard Communication Protocol for Computer assisted electrocardiography SEG Y — Reflection seismology data format SIGIF — SIGnal Interchange Format Sound and music [edit ] Uncompressed 8SVX — Commodore-Amiga 8-bit sound (usually in an IFF container) 16SVX — Commodore-Amiga 16-bit sound (usually in an IFF container) AIFF (.aif, .aifc, .aiff) — Audio Interchange File Format AU BWF — Broadcast Wave Format (BWF), an extension of WAVE CDDA RAW — raw samples without any header or sync WAV — Microsoft Wave Compressed Lossy audio [edit ] Other music [edit ] AUP — Audacity project file CUST — DeliPlayer custom sound file format MID — standard MIDI file; most often just notes and controls but occasionally also sample dumps MUS — Finale Notation file, see also Finale (software) SIB — Sibelius Notation file, see also Sibelius (computer program) SID — Sound Interface Device — Commodore 64 instructions to play SID music and sound effects LY — LilyPond Notation file, see also GNU LilyPond GYM — Sega Genesis YM2612 log VGM — stands for "Video Game Music", log for several different chips PSF NSF — NES Sound Format, bytecode program to play NES music MOD — Soundtracker and Protracker sample and melody modules PTB — Power Tab Editor tab S3M — Scream Tracker 3 module, with a few more effects and a dedicated volume column XM — Fast Tracker module, adding instrument envelopes IT — Impulse Tracker module, adding compressed samples, note-release actions, and more effects including a resonant filter MT2 — MadTracker 2 module. It could be resumed as being XM and IT combined with more features like track effects and automation. MNG — BGM for the Creatures game series, starting from Creatures 2 PSF — Portable Sound Format, PlayStation variant (originally PlayStation Sound Format). minipsf, psflib — Multipart PSF 2sf, dsf, gsf, psf2, qsf, ssf, usf — PSF for other platforms RMJ — RealJukebox Media used for RealPlayer. SPC — Super Nintendo Entertainment System sound file format. NIFF — Notation Interchange File Format MusicXML (.mxl, .xml) TXM — Track ax media YM — Atari ST/Amstrad CPC YM2149 sound chip format JAM — Jam music format ASF — Advanced Systems Format MP1 — for use with UltraPlayer MSCZ — Musescore compressed file MSCZ, — Musescore uncompressed file Playlists [edit ] Audio editing, music production [edit ] Source code for computer programs [edit ] (see also: Script) ADA, ADB, 2.ADA — Ada (body) source ADS, 1.ADA — Ada (specification) source ASM, S — Assembly language source BAS — BASIC, FreeBASIC, Visual Basic, BASIC-PLUS source, [5 ] PICAXE basic BB — Blitz3D BMX — BlitzMax C — C source CLJ — Clojure source code CLS — Visual Basic class COB, CBL — COBOL source CPP, CC, CXX, C, CBP — C++ source CS — C# source CSPROJ — C# project (Visual Studio .NET) D — D source DBA — DarkBASIC source DBPro123 — DarkBASIC Professional project E — Eiffel source EFS — EGT Forever Source File EGT — EGT Asterisk Source File, could be J, C#, VB.net, EF 2.0 (EGT Forever) EL — Emacs Lisp source FOR, FTN, F, F77, F90 — Fortran source FRM — Visual Basic form FRX — Visual Basic form stash file (binary form file) FTH — Forth source GED — Game Maker Extension Editable file as of version 7.0 GM6 — Game Maker Editable file as of version 6.x GMD — Game Maker Editable file up to version 5.x GMK — Game Maker Editable file as of version 7.0 GML — Game Maker Language script file GO — Go source H — C/C++ header file HPP, HXX — C++ header file HS — Haskell source I — SWIG interface file INC — Turbo Pascal included source JAVA — Java source L — lex source LGT — Logtalk source LISP — Common Lisp source M — Objective-C source M — MATLAB M — Mathematica M4 — m4 source ML — Standard ML / OCaml source N — Nemerle source NB — Nuclear Basic source P — Parser source PAS, PP, P — Pascal source (DPR for projects) PHP, PHP3, PHP4, PHP5, PHPS, Phtml — PHP source PIV — Pivot stickfigure animator PL, PM — Perl PRG — db, clipper, Microsoft FoxPro, harbour and Xbase PRO — IDL POL — Apcera Policy Language doclet PY — Python source R — R source RED — Red source REDS — Red/System source RB — Ruby source RESX — Resource file for .NET applications RC, RC2 — Resource script files to generate resources for .NET applications RKT, RKTL — Racket source SCALA — Scala source SCI, SCE — Scilab SCM — Scheme source SD7 — Seed7 source SKB, SKC — Sage Retrieve 4GL Common Area (Main and Amended backup) SKD — Sage Retrieve 4GL Database SKF, SKG — Sage Retrieve 4GL File Layouts (Main and Amended backup) SKI — Sage Retrieve 4GL Instructions SKK — Sage Retrieve 4GL Report Generator SKM — Sage Retrieve 4GL Menu SKO — Sage Retrieve 4GL Program SKP, SKQ — Sage Retrieve 4GL Print Layouts (Main and Amended backup) SKS, SKT — Sage Retrieve 4GL Screen Layouts (Main and Amended backup) SKZ — Sage Retrieve 4GL Security File SLN — Visual Studio solution SPIN — Spin source (for Parallax Propeller microcontrollers) STK — Stickfigure file for Pivot stickfigure animator SWG — SWIG source code TCL — TCL source code VAP — Visual Studio Analyzer project VB — Visual Basic.NET source VBG — Visual Studio compatible project group VBP, VIP — Visual Basic project VBPROJ — Visual Basic .NET project VCPROJ — Visual C++ project VDPROJ — Visual Studio deployment project XPL — XProc script/pipeline XQ — XQuery file XSL — XSLT stylesheet Y — yacc source Spreadsheet [edit ] Tabulated data [edit ] Video [edit ] AAF — mostly intended to hold edit decisions and rendering information, but can also contain compressed media essence 3GP — the most common video format for cell phones GIF — Animated GIF (simple animation; until recently often avoided because of patent problems) ASF — container (enables any form of compression to be used; MPEG-4 is common; video in ASF-containers is also called Windows Media Video (WMV)) AVCHD — Advanced Video Codec High Definition AVI — container (a shell, which enables any form of compression to be used) CAM — aMSN webcam log file DAT — video standard data file (automatically created when we attempted to burn as video file on the CD) DSH FLV — Flash video (encoded to run in a flash animation) M1V MPEG-1 — Video M2V MPEG-2 — Video FLA — Macromedia Flash (for producing) FLR — (text file which contains scripts extracted from SWF by a free ActionScript decompiler named FLARE) SOL — Adobe Flash shared object (" Flash cookie") M4V — (file format for videos for iPods and PlayStation Portables developed by Apple) Matroska (*.mkv) — Matroska is a container format, which enables any video format such as MPEG-4 ASP or AVC to be used along with other content such as subtitles and detailed meta information WRAP — MediaForge (*.wrap) MNG — mainly simple animation containing PNG and JPEG objects, often somewhat more complex than animated GIF QuickTime (.mov) — container which enables any form of compression to be used; Sorenson codec is the most common; QTCH is the filetype for cached video and audio streams MPEG (.mpeg, .mpg, .mpe) MXF — Material Exchange Format (standardized wrapper format for audio/visual material developed by SMPTE) ROQ — used by Quake 3 NSV — Nullsoft Streaming Video (media container designed for streaming video content over the Internet) Ogg — container, multimedia RM — RealMedia SVI — Samsung video format for portable players SMI — SAMI Caption file (HTML like subtitle for movie files) SWF — Macromedia Flash (for viewing) WMV — Windows Media Video (See ASF) [YUV] - Raw video format - Resolution (horizontal x vertical)and Sample structure 4:2:2 or 4:2:0 need to be know explicitly Video editing, production [edit ] Video game data [edit ]
List of common file formats of data for video games on systems that support filesystems, most commonly PC games.
TrackMania United/Nations Forever Engine — File formats used by games based on the TrackMania engine. XeX CHALLENGE.GBX — (Edited) Challenge files. CONSTRUCTIONCAMPAIGN.GBX — Construction campaignes files. CONTROLEFFECTMASTER.GBX/CONTROLSTYLE.GBX — Menu parts. FIDCACHE.GBX — Saved game. GBX — Other TrackMania items. REPLAY.GBX — Replays of races. — File formats used by games based on the DOOM Engine DOOM engine. DEH — DeHackEd files to mutate the game executable (not officially part of the DOOM engine) DSG — Saved game LMP — A lump is an entry in a DOOM wad. LMP — Saved demo recording MUS — Music file (usually contained within a WAD file) WAD — Data storage (contains music, maps, and textures) — File formats used by games based on the Quake Engine Quake engine. BSP — (For Binary space partitioning) compiled map format MAP — Raw map format used by editors like GtkRadiant or QuArK MDL/ MD2/ MD3/MD5 — Model for an item used in the game PAK/ PK2 — Data storage PK3/ PK4 — used by the Quake II, Quake III Arena and Quake 4 game engines, respectively, to store game data, textures etc. They are actually .zip files. .dat — not specific file type, often generic extension for "data" files for a variety of applications sometimes used for general data contained within the .PK3/PK4 files .fontdat — a .dat file used for formatting game fonts .roq — Video format .sav — Savegame format — File formats used by games based on the Unreal Engine Unreal engine. U — Unreal script format UAX — Animations format for Unreal Engine 2 UMX — Map format for Unreal Tournament UMX — Music format for Unreal Engine 1 UNR — Map format for Unreal UPK — Package format for cooked content in Unreal Engine 3 USX — Sound format for Unreal Engine 1 and Unreal Engine 2 UT2 — Map format for Unreal Tournament 2003 and Unreal Tournament 2004 UT3 — Map format for Unreal Tournament 3 UTX — Texture format for Unreal Engine 1 and Unreal Engine 2 UXX — Cache format. These are files that client downloaded from server (which can be converted to regular formats) — File formats used by games based on the Duke Nukem 3D Engine Duke Nukem 3D engine. DMO — Save game GRP — Data storage MAP — Map (usually constructed with BUILD.EXE) Diablo Engine — File formats used by Diablo by Blizzard Entertainment. SV — Save Game ITM — Item File — File formats used by Real Virtuality Engine Bohemia Interactive. Operation:Flashpoint, ARMA 2, VBS2 SQF — Format used for general editing SQM — Format used for mission files PBO — Binarized file used for compiled models LIP — Format that is created from WAV files to create in-game accurate lip-synch for character animations. Other Formats B — used for Grand Theft Auto saved game files BOL — used for levels on Poing!PC DBPF — The Sims 2, DBPF, Package HE0, HE2, HE4 HE games File GCF — format used by the Steam content management system for file archives IMG — format used by Renderware-based games for data storage Grand Theft Auto MAP — format used by Halo: Combat Evolved for archive compression, Doom³, and various other games NBT — format used by Minecraft for storing program variables along with their (Java) type identifiers OEC — format used by OE-Cake for scene data storage P3D — format for panda3d by Disney POD — format used by Terminal Reality REP — used by Blizzard Entertainment for scenario replays in StarCraft. Simcity 4, DBPF (.dat, .SC4Lot, .SC4Model) — All game plugins use this format, commonly with different file extensions SMZIP — ZIP-based package for Stepmania songs, themes and announcer packs. VVVVVV — format used by VVVVVV [12 ] Video game storage media [edit ]
List of the most common filename extensions used when a game's
ROM image or storage medium is copied from an original ROM device to an external memory such as hard disk for back up purposes or for making the game playable with an emulator. In the case of cartridge-based software, if the platform specific extension is not used then filename extensions ".rom" or ".bin" are usually used to clarify that the file contains a copy of a content of a ROM. ROM, disk or tape images usually do not consist of a single file or ROM, rather an entire file or ROM structure contained within a single file on the backup medium. [13 ] N64, V64, Z64, U64, USA, JAP, PAL, EUR, BIN — Nintendo 64 (.n64, .v64, .z64, .u64, .usa, .jap, .pal, .eur, .bin) FIG — Super Famicom (Japanese releases are rarely .fig, above extensions are more common) SRM — Super NES Saved Data Files (.srm) ZST — ZSNES Save States (.zst, .zs1-.zs9, .z10-.z99) FRZ — Snes9X Save States (.frz, .000-.008) TAP (for tape images without copy protection) Z80,SNA — (for snapshots of the emulator RAM) DSK — (for disk images) TAP — Commodore 64 (.tap) (for tape images including copy protection) T64 — (for tape images without copy protection, considerably smaller than .tap files) D64 — (for disk images) CRT — (for cartridge images) ADF — Amiga (.adf) (for 880K diskette images) ADZ — GZip-compressed version of the above. DMS — Disk Masher System, previously used as a disk-archiving system native to the Amiga, also supported by emulators. VFD — Virtual Floppy Disk (.vfd) VHD — Virtual Hard Disk (.vhd) VUD — Virtual Undo Disk (.vud) VMC — Virtual Machine Configuration (.vmc) VSV — Virtual Machine Saved State (.vsv) LOG — Virtual Machine Logfile (.log) VMDK, DSK — Virtual Machine Disk (.vmdk, .dsk) NVRAM — Virtual Machine BIOS (.nvram) VMEM — Virtual Machine paging file (.vmem) VMSD — Virtual Machine snapshot metadata (.vmsd) VMSN — Virtual Machine snapshot (.vmsn) VMSS,STD — Virtual Machine suspended state (.vmss, .std) VMTM — Virtual Machine team data (.vmtm) VMX,CFG — Virtual Machine configuration (.vmx, .cfg) VMXF — Virtual Machine team configuration (.vmxf) VDI — VirtualBox Virtual Disk Image (.vdi) Parallels Workstation [edit ] HDD — Virtual Machine hard disk (.hdd) PVS — Virtual Machine preferences/configuration (.pvs) SAV — Virtual Machine saved state (.sav) COW — Copy-on-write QCOW — QEMU copy-on-write Qcow QCOW2 — QEMU copy-on-write — version 2 Qcow QED — QEMU enhanced disk format Webpage [edit ] Static dtd, Document Type Definition (standard), MUST be public and free HTML — (.html, .htm) — HyperText Markup Language XHTML — (.xhtml, .xht) — eXtensible HyperText Markup Language MHTML — (.mht, .mhtml) — Archived HTML, store all data on one web page (text, images, etc.) in one big file MAF — (.maff) — web archive based on ZIP Dynamically generated ASP — (.asp) — Microsoft Active Server Page ASPX — (.aspx) — Microsoft Active Server Page. NET ADP — AOLserver Dynamic Page BML — (.bml) — Better Markup Language (templating) CFM — (.cfm) — ColdFusion CGI — (.cgi) iHTML — (.ihtml) — Inline HTML JSP — (.jsp) JavaServer Pages Lasso — (.las, .lasso, .lassoapp) — A file created or served with the Lasso Programming Language PL — Perl (.pl) PHP — (.php, .php?, .phtml) — ? is version number (previously abbreviated Personal Home Page, later changed to PHP: Hypertext Preprocessor) RNA — (.rna) — Real Native Application File R — (.r) — Real Native Application File (short alternative) RNX — (.rnx) — Real Native Application File (using experimental version 6 of RNA/Karbon Language) SSI — (.shtml) — HTML with Server Side Includes (Apache) SSI — (.stm) — HTML with Server Side Includes (Apache) Markup languages other web standards-based file formats [edit ] Atom — (.atom, .xml) — Another syndication file format EML — (.eml) — File format used by several desktop email clients JSON-LD — (.jsonld) — A JSON-based Serialization for Linked Data Metalink — (.metalink, .met) — A file format for listing metadata about downloads, such as mirrors, checksums, and other information. RSS — (.rss, .xml) — Syndication file format Markdown — (.markdown, .md) — A light-weight, plain-text, easy to read and write markup language. Shuttle — (.se) — lightweight markup language Other [edit ] AXD — cookie extensions found in temporary internet folder BDF — Binary Data Format — raw data from recovered blocks of unallocated space on a hard drive CBP — CD Box Labeler Pro, CentraBuilder, Code::Blocks Project File, Conlab Project [14 ] CEX — SolidWorks Enterprise PDM Vault File CREDX — CredX Dat File DDB — Generating code for Vocaloid singers voice (see .DDI) DDI — Vocaloid phoneme library (Japanese, English, Korean, Spanish, Chinese, Catalan) DUPX — DuupeCheck database management tool project file GA3 — Graphical Analysis 3 GEDCOM (.ged) — ( GEnealogical Data COMmunication) file format for exchanging genealogical data between different genealogy software HLP — Windows help file IGC — flight tracks downloaded from GPS devices in the FAI's prescribed format INF — similar file format to INI file; used to install device drivers under Windows, inter alia. JAM — JAM Message Base Format for BBSes KMC — tests made with KatzReview's MegaCrammer LSM — LSMaker script file (program using layered .jpg to create special effects; specifically designed to render lightsabers from the Star Wars universe) (.lsm) OER — AU OER TOOL, Open Educational Resource editor PIF — Used for running MS-DOS programs under Windows POR — So called "portable" SPSS files, readable by PSPP PXZ — Compressed file to exchange media elements with PSALMO RISE — File containing RISE generated information model evolution SKP — SketchUp file TOPC — TopicCrunch SEO Project file holding keywords, domain and search engine settings (ASCII); TOS — Character file from The Only Sheet XLF — Extensible LADAR Format XMC — Assisted contact lists file format, based on xml and used in kindergartens and schools ZED — My Heritage Family Tree Zone file — a text file containing a DNS zone Cursors [edit ] ANI — Animated Cursor CUR — Cursor file Smes — Hawk's Dock configuration file Generalized files [edit ] General data formats [edit ]
These file formats are fairly well defined by long-term use or a general standard, but the content of each file is often highly specific to particular software or has been extended by further standards for specific uses.
Text-based [edit ] Generic file extensions [edit ]
These are filename extensions and broad types reused frequently with differing formats or no specific format by different programs.
Binary files [edit ] Bak file (.bak, .bk) — various backup formats: some just copies of data files, some in application-specific data backup formats, some formats for general file backup programs BIN — binary data, often memory dumps of executable code or data to be re-used by the same software that originated it DAT — data file, usually binary data proprietary to the program that created it DSK — file representations of various disk storage images RAW — raw (unprocessed) data Text files [edit ] Partial files [edit ] Differences and patches [edit ] diff — text file differences created by the program diff and applied as updates by patch Incomplete transfers [edit ] !UT — partially completed downloads in uTorrent PART (.part) — partially completed downloads in Mozilla Firefox CRDOWNLOAD (.crdownload) - partially completed downloads in Google Chrome Temporary files [edit ] Temporary file (.temp, .tmp, various others) — sometimes in a specific format, but often just raw data in the middle of processing See also [edit ] References [edit ] External links [edit ]