Mega tracks download file type

This is a list of file formats used by computers, organized by type. Filename extensions are usually noted in parentheses if they differ from the file format name or abbreviation. Many operating systems do not limit filenames to one extension shorter than 4 characters, as was common with some operating systems that supported the File Allocation Table (FAT) file system. Examples of operating systems that do not impose this limit include Unix-like systems, and Microsoft WindowsNT, 95, 98, and ME which have no three character limit on extensions for 32-bit or 64-bit applications on file systems other than pre-Windows 95 and Windows NT 3.5 versions of the FAT file system. Some filenames are given extensions longer than three characters. While MS-DOS and NT always see the final period in a filename as an extension, in UNIX-like systems, the final period doesn't necessarily mean the text no afterward is the extension.^[1]

Some file formats, such as or , may be listed multiple times.

Archive and compressed[edit]

• .?Q? – files that are compressed, often by the SQ program.
• 7z – 7-Zip compressed file
• AAPKG – ArchestrA IDE
• AAC – Advanced Audio Coding
• ace – ACE compressed file
• ALZ – ALZip compressed file
• APK – Android package: Applications installable on Android; package format of the Alpine Linux distribution
• APPX – Microsoft Application Package (.appx)
• AT3 – Sony's UMD data compression
• .bke – BackupEarth.com data compression
• ARC – pre-Zip data compression
• ARC - Nintendo U8 Archive (mostly Yaz0 compressed)
• ARJ – ARJ compressed file
• ASS (also SAS) – a subtitles file created by Aegisub, a video typesetting application (also a Halo game engine file)
• B – (B file) Similar to .a, but less compressed.
• BA – Scifer Archive (.ba), Scifer External Archive Type
• big – Special file compression format used by Electronic Arts to compress the data for many of EA's games
• BIN – compressed archive, can be read and used by CD-ROMs and Java, extractable by 7-zip and WINRAR
• bjsn – Used to store The Escapists saves on Android.
• BKF (.bkf) – Microsoft backup created by NTBackup.c
• bzip2 (.bz2) –
• bld – Skyscraper Simulator Building
• cab – A cabinet (.cab) file is a library of compressed files stored as one file. Cabinet files are used to organize installation files that are copied to the user's system.^[2]
• c4 – JEDMICS image files, a DOD system
• cals – JEDMICS image files, a DOD system
• xaml – Used in programs like Visual Studio to create exe files.
• CLIPFLAIR (.clipflair, .clipflair.zip) – ClipFlair Studio ClipFlair 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.
• DN – Adobe Dimension CC file format
• 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
• ESD – Electronic Software Distribution, a compressed and encrypted WIM File
• ESS (.ess) – EGT SmartSense File, detects files compressed using the EGT compression system.
• EXE (.exe) – Windows application
• Flipchart file (.flipchart) – Used in PrometheanActivInspire Flipchart Software.
• GBP – GBP File Extension – What is a .gbp file and how do I open it? 2 types of files: 1. An archive index file that is created by Genie Timeline [2]. It contains references to the files that the user has chosen to backup; the references can be to an archive file or a batch of files. This files can be opened using Genie-Soft Genie Timeline on Windows. 2. A data output file created by CAD Printed Circuit Board (PCB). This type of file can be opened on Windows using Autodesk EAGLE EAGLE | PCB Design Software | Autodesk, Altium Designer [3], Viewplot Welcome to Viewplot.com ...For PCB Related Software;...Viewplot The Gerber Viewer & editor in one......PCB Elegance a professional layout package for a affordable price, Gerbv gerbv – A Free/Open Source Gerber Viewer on Mac using Autodesk EAGLE, Gerbv, gEDA gplEDA Homepage and on Linux using Autodesk EAGLE, gEDA, Gerbv
• GHO (.gho, .ghs) – Norton Ghost
• GIF (.gif) – Graphics Interchange Format
• gzip (.gz) – Compressed file
• HTML (.html) HTML code 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 – Lempel–Ziv–Markov chain algorithm compressed file
• LZX
• MBW (.mbw) – MBRWizard archive
• MHTML – Mine HTML (Hyper-Text Markup Language) code file
• MPQ Archives (.mpq) – Used by Blizzard Entertainment
• BIN (.bin) – MacBinary
• NTH (.nth) – Nokia Theme Used by NokiaSeries 40 Cellphones
• OAR (.oar) – OAR archive
• OSK - Compressed osu! skin archive
• OSZ – Compressed osu! beatmap archive
• PAK – Enhanced type of .ARC archive
• PAR (.par, .par2) – Parchive
• PAF (.paf) – Portable Application File
• PEA (.pea) – PeaZip archive file
• PHP (.php) – PHP code file
• PYK (.pyk) – Compressed file
• PK3 (.pk3) – Quake 3 archive (See note on Doom³)
• PK4 (.pk4) – Doom³ archive (Opens similarly to a zip archive.)
• py / pyw – Python code file
• RAR (.rar) – Rar Archive, 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 format "RAG game file"
• RaX – Archive file created by RaX
• RPM – Red Hat package/installer for Fedora, RHEL, and similar systems.
• sb – Scratch file
• sb2 – Scratch 2.0 file
• sb3 - Scratch 3.0 file
• SEN – Scifer Archive (.sen) – Scifer Internal Archive Type
• SIT (.sitx) – StuffIt (Macintosh)
• SIS/SISX – Symbian Application Package
• SKB – Google SketchUp backup File
• SQ (.sq) – Squish Compressed Archive
• SWM – Splitted WIM File, usually found on OEMRecovery Partition to store preinstalled Windows image, and to make Recovery backup (to USB Drive) easier (due to FAT32 limitations)
• SZS – Nintendo Yaz0 Compressed Archive
• TAR – group of files, packaged as one file
• TGZ (.tar.gz) – gzipped tar file
• TB (.tb) – Tabbery Virtual Desktop Tab file
• TIB (.tib) – Acronis True Image backup
• UHA – Ultra High Archive Compression
• UUE (.uue) – unified utility engine – the generic and default format for all things UUe-related.
• VIV – Archive format used to compress data for several video games, including Need For Speed: High Stakes.
• VOL – video game data package.
• 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.
• WIM – A compressed disk image for installing Windows Vista or higher, Windows Fundamentals for Legacy PC, or restoring a system image made from Backup and Restore (Windows Vista/7)
• XAP – Windows Phone Application Package
• xz – xz compressed files, based on LZMA/LZMA2 algorithm
• Z – Unixcompress file
• zoo – based on LZW
• zip – popular compression format

Physical recordable media archiving[edit]

• ISO – The generic format for most optical media, including CD-ROM, DVD-ROM, Blu-ray Disc, HD DVD and UMD.
• NRG – The proprietary optical media archive format used by Nero applications.
• IMG – For archiving DOS formatted floppy disks, larger optical media, and hard disk drives.
• ADF – Amiga Disk Format, for archiving Amiga floppy disks
  • ADZ – The GZip-compressed version of ADF.
  • DMS – Disk Masher System, a disk-archiving system native to the Amiga.
• 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 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 format that allows getting 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
• B6T – BlindWrite 5/6 image file

Ceramics glaze recipes[edit]

File formats for software, databases, and websites used by potters and ceramic artists to manage glaze recipes, glaze chemistry, etc.

Computer-aided design[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.

• 3DXML – Dassault Systemes graphic representation
• 3MF – Microsoft 3D Manufacturing Format^[3]
• ACP – VA Software VA – Virtual Architecture CAD file
• AMF – Additive Manufacturing File Format
• AEC – DataCAD drawing format^[4]
• 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)
• C3D – C3D Toolkit File Format
• 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
• ckd – KeyCreator CAD Modeling
• ckt – KeyCreator CAD Modeling
• 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 – Popular file format for Computer Aided Drafting applications, notably AutoCAD, Open Design Alliance applications, and Autodesk Inventor Drawing files
• EASM – SolidWorks eDrawings assembly file
• EDRW – eDrawings drawing file
• EMB – Wilcom ES Designer Embroidery CAD file
• EPRT – eDrawings part file
• EscPcb – "esCAD pcb" data file by Electro-System (Japan)
• EscSch – "esCAD sch" data file by Electro-System (Japan)
• ESW – AGTEK format
• EXCELLON – Excellon file
• EXP – Drawing Express format
• F3D – Autodesk Fusion 360 archive file^[5]
• FCStd – Native file format of FreeCADCAD/CAM package
• 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 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 Standard File Formats – Intergraph
• IPN – Autodesk Inventor Presentation file
• IPT – Autodesk Inventor Part file
• JT – Jupiter Tesselation
• MCD – Monu-CAD (Monument/Headstone Drawing file)
• MDG – Model of Digital Geometric Kernel
• 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 – AVEVAPDMS 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
• dotXSI – For Softimage
• STEP – Standard for the Exchange of Product model data
• STL – Stereo Lithographic data format used by various CAD systems and stereo lithographic printing machines.
• STD – Power Vision Plus – Electricity Meter Data (Circutor)
• 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.
• X_B – Parasolids binary format
• X_T – Parasolids
• XE – Ashlar-Vellum Xenon – for associative 3D modeling
• ZOFZPROJ – ZofzPCB 3D PCB model, containing mesh, netlist and BOM

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 system-on-a-chip (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 – Analogwaveform 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
• PSF – Cadence proprietary format to store simulation results/waveforms (2GB limit)
• PSFXL – Cadence proprietary format to store simulation results/waveforms
• 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
• SST2 – Cadence proprietary format to store mixed-signal simulation results/waveforms
• 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
• TLF – Contains timing and logical information about a collection of cells (circuit elements)
• 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
• DTA – Sage Sterling database file
• 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 DriveFusion 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
• LIRS - Layered IntagerStorage. Stores intageres with characters such as semicolons to create lists of data.
• 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)
• PCONTACT – WinIM Contact file
• 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
• sqlite – SQLite
• 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 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, it 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; used to permit round-trip (export Topicscape, change files and folders as desired, re-import 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 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.
• ASE – Adobe Swatch Exchange. Used by Adobe Photoshop, Illustrator, and InDesign.^[8]
• GPL – GIMP palette file. Uses a text representation of color names and RGB values. Various open source graphical editors can read this format,^[9] including GIMP, Inkscape, Krita,^[10]KolourPaint, Scribus, CinePaint, and MyPaint.^[11]
• PAL – Microsoft RIFF 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.

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