Enterprise DLP
Supported File Signatures
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Enterprise DLP Docs
Supported File Signatures
File signature detection supported by Enterprise Data Loss Prevention (E-DLP).
| File Type Name | Extension | Supports Include Mode |
|---|---|---|
| 3d [Survex 3d image] | 3D | No |
| 3dm [Rhinoceros 3D Model] | 3DM | No |
| 3dxml [3DVIDIA 3DXML] | 3DXML | Yes |
| 3g2 [3GPP2 video file] | 3G2 | No |
| 3gp [3GPP video file] | 3GP | No |
| 3ko [NGRAIN SDK 3d data] | 3KO | No |
| 3mf [3D Manufacturing Format document] | 3MF | No |
| 4db-data [4D Database data file] | 4DD, 4DB | No |
| 4db-index [4D Database index file] | 4DINDX, 4DINDY | No |
| 4xm [4X Movie File] | 4XM | No |
| 7z [7-Zip archive (7z)] | 7Z | Yes |
| aa [Audible Audiobook (AA) file] | AA | No |
| aab [Android App Bundle] | AAB | No |
| aaf [Advanced Authoring Format (AAF) for data interchange] | AAF | No |
| aax [Audible Enhanced Audiobook] | AAX | No |
| ab [Applix Builder format] | AB | No |
| abap [ABAP Source Code4] | ABAP | No |
| abaqus-odb [Abaqus ODB Format] | ODB | No |
| abif [Applied Biosystems Inc. Format (ABIF)] | AB1, FSA | No |
| ability-comm [Ability Presentation] | No | |
| ability-db [Ability Database] | No | |
| ability-image [Ability Image] | No | |
| ability-spreadsheet [Ability Spreadsheet later versions format] | AWS | No |
| ability-ss [Ability Spreadsheet] | No | |
| ability-wp [Ability Word Processor] | No | |
| ability-write [Ability Write later versions format] | AWW | No |
| abr [Adobe Photoshop Brush document] | ABR | No |
| abt [AbiWord template] | ABT | No |
| abw [AbiWord document] | ABW | No |
| ac [Inivis AC3D file] | AC | No |
| ac3 [AC3 Audio File Format] | AC3 | No |
| acb [Adobe Photoshop Color Book] | ACB | No |
| accdb [Microsoft Access 2007] | ACCDB | No |
| accdt [Microsoft Access 2007 Template] | ACCDT | No |
| ace [ACE archive format] | ACE | No |
| acis-ascii [3d ACIS Modeler (ASCII) file] | SAT | No |
| acis-binary [3d ACIS Modeler (binary) file] | SAB | No |
| acorn-draw [Acorn Draw image] | AFF | No |
| acs [Microsoft Agent Character file] | ACS | No |
| act [ACT! CRM software] | ACT | No |
| ad [Apple Double] | AD | No |
| ad1 [AD1 Evidence file] | AD1 | No |
| adobe-aep [Adobe After Effects project] | AEP | No |
| adobe-mmm [Adobe Multiple master font format] | MMM | No |
| adobe-pfm [Adobe Printer Font Metrics format] | PFM | No |
| adobe-swatch-exchange [Adobe Swatch Exchange Format] | ASE, ASEF | No |
| advanced-forensic-aff [Advanced Forensic Format (AFF) version 1] | AFF | No |
| adx [ADX audio file] | ADX | No |
| aes [AES Crypt document] | AES | No |
| afd [AutoForm Design file] | AFD | No |
| aff4 [Advanced Forensic Format (AFF) version 4] | AFF4 | No |
| affinity [Affinity Photo/Publisher/Designer document] | AFPHOTO, AFPUB, AFDESIGN, AFTEMPLATE | No |
| afm [Adobe Font Metrics ASCII format] | AFM | No |
| afp [IBM Advanced Function Presentation (AFP) image] | AFP | No |
| ag [Applix Graphics] | AG | No |
| agda [Agda Source Code4] | AGDA | No |
| agema [AGEMA thermal camera report] | No | |
| aiff [Audio Interchange File Format (AIFF)] | AIF, AIFF, AIFC | No |
| air [Adobe AIR application installer package] | AIR | No |
| aix-exe [AIX/RISC COFF executable] | No | |
| aix-lib [AIX/RISC COFF dynamic library] | A | Yes |
| aix-obj [AIX/RISC COFF relocatable object] | No | |
| ajp [Anfy (Java) Applet Generator file] | AJP | No |
| alibre-asm [Alibre document] | ASM, DRW, GLP, PRT, SMP | No |
| alis [ALIS] | No | |
| alloy [Alloy Source Code4] | ALS | No |
| altium-intlib [Altium Designer Integrated Library] | INTLIB | No |
| altium-pcbdoc [Altium Designer PCB document] | PCBDOC | No |
| altium-pcblib [Altium Designer PCB Library] | PCBLIB | No |
| altium-schdoc [Altium Designer Schematic document] | SCHDOC | No |
| altium-schlib [Altium Designer Schematic Library] | SCHLIB | No |
| alz [ESTsoft ALzip ALZ archive] | ALZ | No |
| amazon-kfx [Amazon KFX eBook format] | KFX, AZW | No |
| amf [Additive manufacturing file format (AMF) document] | AMF | No |
| amiga-amf [Amiga Metafile] | AMF | No |
| amiga-iff [Amiga IFF (8SVX) Sound] | IFF | No |
| amiga-mod [Amiga MOD] | MOD | No |
| aml [Microsoft Assistance Markup Language] | AML | No |
| ampl [AMPL Source Code4] | AMPL | No |
| amr [Adaptive Multi-Rate audio format] | AMR | No |
| amv [AMV video file] | AMV | No |
| anbm [IFF Animated Bitmap] | No | |
| android-xml-binary [Android Binary XML (compressed by aapt) format] | XML | No |
| ani [Windows Animated Cursor] | ANI | No |
| anim [IFF Amiga animated raster graphics format] | No | |
| apache-orc [Apache ORC (Optimized Row Columnar) data] | ORC | No |
| ape [Monkey's Audio format] | APE | No |
| apex [Apex Source Code4] | CLS | No |
| apk [Android Package Kit (APK) format] | APK | No |
| apl [APL Source Code4] | APL | No |
| apng [Animated Portable Network Graphics (Animated-PNG)] | APNG, PNG | No |
| apnx [Amazon Kindle page number index] | APNX | No |
| aportis-palm-doc [PalmDOC / Aportis DOC eBook] | PRC, PDB | No |
| applescript [AppleScript Source Code3] | APPLESCRIPT | No |
| applescript-binary [AppleScript Binary Source Code] | SCPT | No |
| apple-single [Apple Single] | No | |
| apple-typedstream [Apple/NeXT typedstream data format] | No | |
| applix-alis [Applix Asterix] | AX | No |
| applix-word [Applix Words] | AW | No |
| apx [Ability Office PhotoPaint image] | APX | No |
| ar [Unix Archive ar format or DOS/Windows Object Library] | LIB, A | No |
| AR | Yes | |
| arc [Internet Archive ARC format] | ARC | No |
| arcgis-graph-grf [ArcGIS Graph format] | GRF | No |
| arc-pak [PAK/ARC Archive] | ARC, PAK | No |
| arcxml [ESRI ArcIMS project XML file (ArcXML)] | AXL | No |
| arduino [Arduino Source Code4] | INO | No |
| arf [Webex advanced network ARF recordings] | ARF | No |
| arj [ARJ (Archive by Robert Jung) file format] | ARJ | No |
| art [ART image format] | ART | No |
| as [Applix Spreadsheets] | AS | No |
| asciidoc [AsciiDoc Source Code4] | ASC | No |
| asd [Microsoft Word (97-2003) AutoRecover file] | ASD | No |
| asdf [Advanced Scientific Data Format] | ASDF | No |
| asf [Advanced Systems Format (ASF)] | ASF | No |
| ashlar-vellum-model [Ashlar-Vellum CAD model] | AR, CO, XE | No |
| asice [Associated Signature Container Extended format] | ASICE | No |
| asics [Associated Signature Container Simple format] | ASICS | No |
| ask [askSam database] | ASK | No |
| asm [Assembly Code] | Yes | |
| asn1 [ASN.1 Source Code4] | ASN | No |
| aspectj [AspectJ Source Code4] | AJ | No |
| asx [Advanced Stream Redirector file] | ASX | No |
| asylum-music-amf [Asylum Music Format] | AMF | No |
| atm [Terragen object geometry file] | ATM | No |
| atom [Atom Syndication Format] | ATOM | No |
| ats [ATS Source Code4] | No | |
| au [NeXT/Sun Audio Data] | AU, SND | No |
| aud [Westwood Studios Audio file] | AUD | No |
| aup [Audacity audio project file] | AUP | No |
| autocad-ctb [AutoCAD Plot Style and Configuration files] | CTB, STB, PC3, PMP | No |
| autocad-shx [AutoCAD compiled shape file] | SHX | No |
| autocad-slb [AutoCAD Slide library] | SLB | No |
| autocad-sld [AutoCAD Slide image] | SLD | No |
| autocad-vba [AutoCAD VBA project format] | DVB | Yes |
| autodesk-123d [Autodesk 123D] | 123DX | No |
| autodesk-3ds [Autodesk 3ds format] | 3DS | No |
| autodesk-artcam [Autodesk ArtCAM] | ART | No |
| autodesk-emdl [AutoDesk Softimage Export Model] | EMDL | No |
| autodesk-f3d [Autodesk Fusion 360 model] | F3D | No |
| autodesk-flc [AutoDesk Animator Pro FLIC] | FLC | No |
| autodesk-fli [AutoDesk Animator FLIC] | FLI | No |
| autodesk-fm [Autodesk FeatureCAM part] | FM | No |
| autodesk-formit [Autodesk FormIt] | AXM, AXMF | No |
| autodesk-iam [Autodesk Inventor assembly] | IAM | No |
| autodesk-idw [Autodesk Inventor drawing] | IDW | No |
| autodesk-ipt [Autodesk Inventor part] | IPT | No |
| autodesk-max [Autodesk 3ds Max format] | MAX | Yes |
| autodesk-max-ase [Autodesk 3ds Max ASCII Scene Exporter file] | ASE | No |
| autodesk-pcg [Autodesk Indexed Point Cloud] | PCG | No |
| autodesk-rcp [Autodesk ReCap Project] | RCP | No |
| autodesk-rcs [Autodesk ReCap Scan] | RCS | No |
| autodesk-revit [Autodesk Revit document] | RVT, RFA, RTE, RFT | No |
| autodesk-whip [AutoDesk WHIP] | WHP | No |
| autoshade [AutoShade Rendering] | No | |
| avb [Microsoft Comic Chat Character] | AVB | No |
| avi [Audio Video Interleave] | AVI | No |
| avif [AV1 Image Format (AVIF)] | AVIF | No |
| avif-ivf [AV1 Image (IVF container)] | AVIF, AVIFS | No |
| avif-sequence [AV1 Image Sequence Format (AVIFS)] | AVIFS | No |
| avr [AVR (Audio Visual Research) format] | AVR | No |
| avro [Apache Avro binary format] | AVRO | No |
| away3d-awd [Away3D scene file] | AWD | No |
| awk [Awk Source Code4] | AWK | No |
| axpx [AuditXPressX file] | AXPX | No |
| axx [AxCrypt encrypted document] | AXX | No |
| azw [Amazon Kindle or Mobipocket eBook format] | AZW, PRC | No |
| b1 [B1 format] | B1 | No |
| bai2 [BAI2 (Bank Administration Institure) data] | No | |
| base64 [Base64-encoded ASCII text file] | No | |
| bat [MS-DOS Batch File] | BAT | Yes |
| bau [ODF AutoText file] | BAU | No |
| bb-activ-dat [BlackBerry Activation File] | DAT | No |
| bbcd [BobCAD-CAM document] | BBCD | No |
| bc [Boxcryptor encrypted file] | BC | No |
| bdb-log [Berkeley DB log database format] | No | |
| bdb-query [Berkeley DB queue database format] | No | |
| bdf [Glyph Bitmap Distribution Format] | BDF | No |
| bdicty [PalmOS BDicty document] | PDB | No |
| bdr [Microsoft Office Border images] | BDR | No |
| berkeley-btree-db [Berkeley DB btree database format] | DB | No |
| berkeley-hash-db [Berkeley DB hash database format] | DB | No |
| bernina-art [Bernina ART embroidery image] | ART | No |
| bff [3D Sprint (3D Systems) SLA Build file] | BFF | No |
| bh [BlakHole compression format] | BH | No |
| bik [Bink audio-video container format] | BIK, BK2 | No |
| bim-collaboration-bcf [BIM Collaboration Format (BCF)] | BCF | No |
| binary-call-bcf [Binary Variant Call Format (BCF) file] | BCF | No |
| binary-terrain [Binary Terrain file] | BT | No |
| binhex [BinHex] | HQX | No |
| bin-unknown [Bin unknown format (.xxx)] | No | |
| biorad-image [BioRad confocal image] | PIC | No |
| bitmap-bga [OS/2 Bitmap Graphics Array] | BGA, BMP, ICO | No |
| bk2 [Bink Video 2 audio-video container] | BIK, BK2 | No |
| bkf [Microsoft Windows Backup File] | BKF | No |
| blackberry-cod [Blackberry executable] | COD | No |
| blender-v1 [Blender (v1) CAD file] | BLEND | No |
| blender-v2 [Blender (v2) CAD file] | BLEND | No |
| blf [CAD Binary Logging Format] | BLF | No |
| blg [Microsoft Binary Log file] | BLG | No |
| blitzmax [BlitzMax Source Code4] | BMX | No |
| bluespec [Bluespec Source Code4] | BSV | No |
| bmp [Windows Bitmap Image] | BMP | No |
| book [FrameMaker Book] | BOOK | No |
| borland-reflex2-db [Borland Reflex 2 format] | R2D | No |
| borland-reflex-db [Borland Reflex database] | No | |
| borland-turbo-c-project [Borland Turbo C project file] | PRJ | No |
| box [Foxmail email format] | BOX | No |
| boxnote [Box Note document] | BOXNOTE | No |
| bpg [Better Portable Graphics BPG format] | BPG | No |
| brainfuck [Brainfuck Source Code4] | B, BF | No |
| brep [Open CASCADE BRep model] | BREP, BRP | No |
| brightscript [Brightscript Source Code4] | BRS | No |
| brl-cad-binary [BRL-CAD binary database (v5)] | G | No |
| bw-database [BeagleWorks (later WordPerfect Works) Database document] | BW, WPW | No |
| bw-draw [BeagleWorks (later WordPerfect Works) Draw document] | BW, WPW | No |
| bw-paint [BeagleWorks (later WordPerfect Works) Paint document] | BW, WPW | No |
| bw-spreadsheet [BeagleWorks (later WordPerfect Works) Spreadsheet document] | BW, WPW | No |
| bw-word [BeagleWorks (later WordPerfect Works) Word Processor document] | BW, WPW | No |
| bzip2 [Bzip 2 Compressed File] | BZ2 | No |
| c_cpp-hdr [C Source Code Header] | H | Yes |
| c_cpp-src [C Source Code] | C, H | Yes |
| c3d [Coordinate 3D (C3D) format] | C3D | No |
| c4d [Cinema 4D model] | C4D | No |
| cab [Microsoft Cabinet File (CAB)] | CAB | No |
| cad [CadStd (CAD Standard) document] | CAD | No |
| cadam-drawing [CADAM Drawing] | CDD | No |
| cadam-drawing-overlay [CADAM Drawing Overlay] | CDO | No |
| cadd-font [General CADD Pro Font file] | GXF | No |
| cadkey [CADKEY PRT file] | PRT | Yes |
| cad-mdf [CAD Measurement Data Format] | MDF | No |
| caf [Apple Core Audio Format] | CAF | No |
| caj [Chinese Academic Journal CAJ document (2010-)] | CAJ | No |
| caj2 [Chinese Academic Journal CAJ document (2005-2010)] | CAJ | No |
| cal [Sorcim SuperCalc spreadsheet] | CAL | No |
| calamus [Calamus Desktop Publishing] | No | |
| calamus-crg [Calamus Raster Graphic image] | CRG | No |
| calamus-cvg [Calamus Vector Graphic image] | CVG | No |
| calamus-font [Calamus Font] | CFN | No |
| calendar-creator [Broderbund Calendar Creator document (v4+)] | CC3, CE3, CC5, BCC | No |
| cals-cal [CALS raster image format] | CAL | No |
| camtasia-project [Camtasia XML Project] | CAMPROJ | No |
| camtasia-recording [Camtasia Recording] | CAMREC | No |
| canon-camera [Canon Digital Camera image] | No | |
| canon-ciff [Canon RAW CIFF/CRW image] | CRW | No |
| canon-raw [Canon Raw image] | CR3 | No |
| cartocss [CartoCSS Source Code4] | MSS | No |
| casio-camera [Casio Digital Camera image] | No | |
| catia [CATIA Formats (CAT*)] | CATPART, CATDrawing, CATPRODUCT | Yes |
| catia-mod [CATIA (version 4) model] | MOD, MODEL | No |
| caz [CA Technologies ZIPXP compressed document] | CAZ | No |
| cch [CorelChart] | CCH | No |
| cda [CD Audio track shortcut] | CDA | No |
| cda-ddif [CDA / DDIF] | DDIF | No |
| cddx [Circuit Diagram (CDDX) document] | CDDX | No |
| cdr [CorelDRAW] | CDR, CDRX | No |
| cdx [ChemDraw CDX format] | CDX | No |
| cdxa-mpeg-ps [MPEG-PS container with CDXA stream] | MPG | No |
| cdxml [ChemDraw CDXML format] | CDXML | No |
| ceowrite [CEOwrite] | CW | No |
| cerius-msi [MSI Cerius chemical formula document] | MSI | No |
| ceylon [Ceylon Source Code4] | CEYLON | No |
| cff-font [Adobe Compact Font Format (CFF)] | CFF | No |
| cgm-binary [Computer Graphics Metafile Binary] | CGM | No |
| cgm-character [Computer Graphics Metafile Character] | CGM | No |
| cgm-clear-text [Computer Graphics Metafile Text] | CGM | No |
| chapel [Chapel Source Code4] | CHPL | No |
| chi [ChiWriter document (up to version 3)] | CHI | No |
| chi4 [ChiWriter document (version 4)] | CHI | No |
| chinese-avs [Chinese AVS video format] | avs | No |
| chm [Microsoft Compiled HTML Help] | CHM | No |
| chp [BizInt SmartCharts data format] | CHP, CHRR | No |
| chrt [KOffice KChart document] | CHRT | No |
| cht [Harvard Graphics Chart] | CH3, CHT | No |
| cif [Crystallographic Information File] | CIF | No |
| cin [Kodak Cineon image] | CIN | No |
| cine [Phantom Cine video file] | CINE | No |
| cis-cod [Lightning Strike image] | COD | No |
| ckd [Kubotek KeyCreator file] | CKD | No |
| clarion [Clarion Source Code4] | CLW | No |
| clarion-db [Clarion database] | DAT | No |
| clarion-tps [Clarion TopSpeed Data file] | TPS | No |
| claris-draw [Claris Draw document] | No | |
| class [Java Class format] | CLASS | Yes |
| clean [Clean Source Code4] | DCL, ICL | No |
| clicker-ebook-clk [Crick Clicker eBook] | CLK | No |
| clips [CLIPS Source Code4] | CLP | No |
| clojure [Clojure Source Code3] | CLJ, CL2 | No |
| cmake [CMake Source Code4] | CMAKE | No |
| cmdf [CrystalMaker chemical format] | CMDF | No |
| cml [Chemical Markup Language (CML) XML format] | CML | No |
| cmp [LEADTools CMP image] | CMP | No |
| cmpcbdoc [Altium CircuitMaker] | CMPCBDOC | No |
| cmz [CMZ compression format] | CMZ | No |
| cnc [Dolphin PartMaster CNC file] | CNC | No |
| cnm [Arxel CNM audio-video format] | CNM | No |
| cobol [COBOL Source Code4] | CBL, CCP, COB, CPY | No |
| coffeescript [CoffeeScript Source Code3] | COFFEE, CAKE | No |
| coff-exe [Common Object File Format (COFF) executable] | No | |
| coff-lib [Common Object File Format (COFF) dynamic library] | No | |
| coff-obj [Common Object File Format (COFF) relocatable object] | O, OBJ | No |
| collada-dae [Collada Digital Asset Exchange (DAE) format] | DAE | No |
| colorix [ColoRIX image] | RIX, SCX, SCI | No |
| com [PC (.COM)] | COM | No |
| comet-top-word [Nixdorf COMET TOP Financial Accounting software] | No | |
| compactor-archive [Compactor / Compact Pro] | No | |
| component-pascal [Component Pascal Source Code4] | CP | No |
| concept-draw-cdd [ConceptDraw Diagram (CDD/CDL/CDS/CDT) document] | CDD, CDL, CDS, CDT | No |
| concept-draw-cddz [ConceptDraw Diagram (CDDZ/CDSZ/CDTZ) document] | CDDZ, CDSZ, CDTZ | No |
| concept-draw-cdmz [ConceptDraw MindMap (CDMZ/CDMTZ) document] | CDMZ, CDMTZ | No |
| concept-draw-cdpx [ConceptDraw Project XML (CDPX) document] | CDPX | No |
| concept-draw-cdpz [ConceptDraw Project (CDPZ) document] | CDPZ | No |
| concept-draw-cdtsx [ConceptDraw Diagram theme (CDTSX) document] | CDTSX | No |
| concept-draw-cdx [ConceptDraw Diagram XML (CDX) document] | CDX | No |
| concept-draw-report [ConceptDraw Project Report] | CDPREPORT | No |
| consolidated-cda [Consolidated CDA document] | XML | No |
| convergent-design [Convergent Design file] | No | |
| cool [Cool Source Code4] | CL | No |
| coq [Coq Source Code4] | V | No |
| corel-draw-cmx [Corel CMX] | CMX | No |
| corel-painter-rif [Corel Painter RIFF image] | RIF | No |
| corel-photo-paint [Corel Photo Paint (version 7 and higher)] | CPT | No |
| corel-presentation [Corel Presentations] | SHW, PRC | No |
| corel-quattro-pro [Corel Quattro Pro] | QPW, WB1, WB2, WB3, WQ1 | No |
| corel-rave [Corel R.A.V.E. animation] | CLK | No |
| corel-wavelet-wi [Corel Wavelet WI image] | WI | No |
| corel-wavelet-wvl [Corel Wavelet WVL image] | WVL | No |
| cpc [Cartesian Perceptual Compression image] | CPC, CPI | No |
| cpio-chr-hdr [cpio archive - CHR Header] | CPIO | No |
| cpio-crc-hdr [cpio archive - CRC Header] | CPIO | No |
| cpp-hdr [C++ Source Code Header] | H,HPP,HXX,HH | Yes |
| cpp-src [C++ Source Code] | CC, CPP, CXX, HPP | Yes |
| cpt-comm [CPT Corporation word processor] | PF | No |
| cpx [FreeDOS CodePage information file] | CPX | No |
| crack-art [Crack Art image] | CA1, CA2, CA3 | No |
| creole [Creole Source Code4] | CREOLE | No |
| crt [X509 certificate] | CRT, PEM, CER, KEY | Yes |
| DER, CER | No | |
| crx [Google Chrome Extension format] | CRX | No |
| cryo-apc [CRYO Interactive APC audio] | APC, HNM, BF, ZIK | No |
| cryptoforge-cfe [CryptoForge encrypted file] | CFE | No |
| crystal [Crystal Source Code4] | CR | No |
| csdl [MS Visual Studio schema definition file] | CSDL, SSDL | No |
| csharp [C# Source Code] | CS | Yes |
| cso [Compressed ISO CD image (CISO)] | CSO | No |
| csound [Csound Source Code4] | ORC | No |
| csound-doc [Csound Document Source Code4] | CSD | No |
| csp [Creative Signal Processor codec] | CSP | No |
| cspcbdoc [Altium CircuitStudio] | CSPCBDOC | No |
| csproj [MS Visual Studio VCXPROJ/CSPROJ project] | CSPROJ, VCXPROJ | No |
| css [Cascading Style Sheet3] | CSS | No |
| csv [CSV (Comma Separated Values)] | CSV | Yes |
| ctable2-datum [CTable2 Datum Grid Shift format] | No | |
| ctx [Softdisk Text Compressor format] | CTX | No |
| cuda [Cuda Source Code4] | CU | No |
| curses-screen [Curses Screen Image] | No | |
| cweb [CWeb Source Code4] | W | No |
| cwk [AppleWorks (Claris Works) File] | CWK | No |
| d [D Source Code4] | DCL, ICL | No |
| d256-mmm [Digisonde D256 tape format] | MMM | No |
| daa [PowerISO Direct Access Archive format] | DAA | No |
| dar [Disk Archiver archive] | DAR | No |
| dart [Dart Source Code4] | DART | No |
| datapackage [Frictionless Data Package] | ZIP | No |
| dbase-db [dBase Database III+/IV] | DBF, VCX | No |
| dbml [Microsoft Database Markup Language XML document] | DBML | No |
| dc1 [DevCAD (v1) document] | DC1 | No |
| dc2 [DevCAD Cam Pro (v2) document] | DC2 | No |
| dca-rft [IBM DCA-RFT (Revisable Form)] | RFT, DC | No |
| dcs [DCS] | No | |
| dcx [DCX FAX Format - PCX images] | DCX | No |
| ddp [Delphi Diagram Portfolio file] | DDP | No |
| dds [Microsoft DirectDraw Surface container format] | DDS | No |
| deb [Debian binary package format] | DEB | No |
| deep [IFF-DEEP TVPaint image] | DEEP | No |
| def [Convergent Technologies DEF Comm. Format] | def | Yes |
| degas [DEGAS (Design & Entertainment Graphic Arts System) image] | PI1, PI2, PI3 | No |
| degas-compressed [DEGAS (Design & Entertainment Graphic Arts System) compressed image] | PC1, PC2, PC3 | No |
| deluxepaint-anm [DeluxePaint animation] | ANM | No |
| designpro [Avery DesignPro document] | ZDL, ZDP | No |
| dex [Dalvik Executable dex format] | DEX | No |
| dfa [DreamForge DFA FMV format] | DFA | No |
| dfont [Datafork TrueType font] | DFONT | No |
| dgb [FlashCAD drawing database] | DGB | No |
| dg-cds [DG Common Data Stream] | CDS | No |
| dia [Dia diagramming document] | DIA | No |
| dicom [Digital Imaging and Communications in Medicine (Dicom)] | DCM | No |
| dif [Digital Interface Format (DIF) DV video] | DV | No |
| dif-spreadsheet [Data Interchange Format] | DIF | No |
| digital-command-com [DIGITAL Command Language Source Code4] | COM | No |
| dirac-wavelet [ISO-BMFF Dirac Wavelet compression] | No | |
| directory-interchange-dif [Directory Interchange Format (DIF)] | DIF | No |
| disk-doubler [Disk Doubler] | No | |
| disk-image [Disk Image] | DMG | No |
| disney-ptext [Walt Disney Ptext texture map] | PTX | No |
| dita [Darwin Information Typing Architecture (DITA) file] | DITA | No |
| ditamap [Darwin Information Typing Architecture (DITA) map file] | DITAMAP | No |
| djvu [AT&T DjVu format] | DJVU | No |
| dll [Microsoft Dynamic Link Library (DLL)] | DLL, PYD | No |
| dls [DLS Downloadable Sounds format] | DLS | No |
| dmb-maf-audio [DMB MAF audio] | No | |
| dmb-maf-video [DMB MAF video] | No | |
| dmg [Mac Disk Copy Disk Image File] | DMG, ISO, IMAGE | No |
| dmp [Windows heap or mini core dump file] | DMP | No |
| dmp-content [Digital Media Project Content Format] | No | |
| dnl [DNAML DNL eBook] | DNL | No |
| doc [Microsoft Word DOC] | DOC, WPS, WBK | Yes |
| MW | No | |
| No | ||
| doc-html [Microsoft Word HTML format] | DOC, HTM | No |
| dockerfile [Dockerfile3] | No | |
| docx [Microsoft Word 2007 DOCX] | DOCM, DOTM, DOCX, DOTX | Yes |
| doc-xml [Microsoft Word 2003 XML] | XML | No |
| docx-xml [Microsoft Word 2007 XML - Flat xml] | XML | No |
| dolphin-3dcam [Dolphin 3DCAM] | D3D | No |
| dos-red [MS-DOS RED installer library format] | RED | No |
| dot [Graphviz (DOT) Source Code4] | DOT | No |
| dpg [Nintendo DS DPG video format] | DPG | No |
| dpx [Digital Picture Exchange (DPX) image format] | DPX | No |
| dra [Dolphin PartMaster drawing] | DRA | No |
| drawio [DRAWIO image] | DRAWIO | No |
| drc [BBC Dirac video format] | DRC | No |
| dr-halo-pal [Dr Halo raster image PAL file format] | PAL | No |
| drw [Windows Draw (Micrografx)] | DRW | No |
| dsa101 [Honeywell Bull] | No | |
| dsf [Micrografx Designer] | DSF | No |
| ds-store [Apple Desktop Services Store file] | DS_Store | No |
| dst [Data Stitch Tajima (DST) embroidery image] | DST | No |
| dsym [Digital Symphony audio] | DSYM | No |
| dtb [Linux Device Tree Blob format] | DTB | No |
| dtrace [DTrace Source Code4] | D | No |
| dts [DTS Coherent Acoustics audio format] | DTS | No |
| dvb [Digital Video Broadcast format] | DVB | No |
| dvi [DeVice Independent file (DVI)] | DVI | No |
| dvr-ms [Microsoft Digital Video Recording (DVR-MS)] | DVR-MS | No |
| dwb [VariCAD file] | DWB | No |
| dwf [Autodesk Design Web Format] | DWF | No |
| dwfx [Design Web Format XPS (DWFX) document] | DWFX | No |
| dwg [AutoDesk AutoCAD Drawing file] | DWG, DWS, DWT | Yes |
| dx [DEC WPS Plus DX] | DX | No |
| dxa [Runesoft DXA video] | DXA | No |
| dxf [Autodesk AutoCAD DXF] | DXF | Yes |
| dxp [TIBCO Spotfire DXP data format] | DXP | No |
| dz [Dzip archive] | DZ | No |
| e [E Source Code4] | E | No |
| e57 [E57 LIDAR point cloud file] | E57 | No |
| eac3 [Enhanced-AC3 (EAC3) Audio File format] | AC3 | No |
| eagle [Autodesk EAGLE] | BRD, DBL, LBR, SCH | Yes |
| ea-mpc [Electronic Arts MPC video] | MPC | No |
| ear [Java EAR file format] | EAR | No |
| ea-sead [Electronic Arts SEAD audio] | TGV | No |
| ea-str-audio [Electronic Arts audio file] | STR | No |
| ea-tgq [Electronic Arts TGQ video] | TGQ | No |
| ea-tgv [Electronic Arts TGV video] | TGV | No |
| ebcdic-xml [EBCDIC-encoded XML file] | XML | No |
| ebo [Microsoft Reader annotation file] | EBO | No |
| ebu-subtitle [EBU Subtitling data exchange format] | STL | No |
| ec [eC Source Code4] | EC | No |
| ecl [ECL Source Code4] | ECL | No |
| ecw [Enhanced Compressed Wavelet image] | ECW | No |
| edc [Kryptel encrypted file] | EDC | No |
| edcdic [EBCDIC Text] | No | |
| eddx [Edraw Max document] | EDDX | No |
| edf [Electronic Data Interchange Format (EDIF)] | EDF | No |
| edi [EDIFACT-encoded EDI document] | EDI | No |
| edmx [MS Visual Studio entity data model] | EDMX | No |
| edrawings [eDrawings Publisher document] | EASM, EPRT, EDRW | No |
| efires [Apple EFI Image] | EFIRES | No |
| efx [eFax file] | EFX | No |
| egg-archive [ESTsoft ALzip EGG archive] | EGG | No |
| egg-video [EGG video file] | EGG | No |
| eiffel [Eiffel Source Code3] | E | No |
| elc [Byte-compiled Lisp (Emacs/XEmacs)] | ELC | No |
| elf [ELF file] | Yes | |
| o, so | Yes | |
| elm [Elm Source Code4] | ELM | No |
| emacs-lisp [Emacs Lisp Source Code4] | EL | No |
| emberscript [EmberScript Source Code4] | EM | No |
| emcmf [Documentum EMCMF format] | EMCMF | No |
| emf [Enhanced Metafile] | EMF | Yes |
| eml [EML email] | SMTP | No |
| EML, MBX | Partial | |
| emx [Legato EMailXtender Archives Format (EMX)] | EMX | No |
| encase [Expert Witness Compression Format (EnCase)] | E01, L01, LX01 | No |
| encrypted-iwork [iWork password-protected document] | PAGES, NUMBERS, KEY | No |
| enex [Evernote XML document] | ENEX | No |
| enf [EndNote Filter] | ENF | No |
| enl [EndNote Library (up to version 9)] | ENL | No |
| enlx [EndNote Library (version X onwards)] | ENL, ENLX | No |
| ens [EndNote Style] | ENS | No |
| ensoniq-waveset-ecw [Ensoniq Waveset audio data file] | ECW | No |
| ent [Microsoft Entourage Database Format] | No | |
| enz [EndNote Connection] | ENZ | No |
| eot [Embedded OpenType font] | EOT | No |
| eps [Encapsulated PostScript] | EPS | No |
| eps | Yes | |
| epub [Open Publication Structure electronic publication] | EPUB | No |
| ereader-pdb [eReader (Palm Reader/ Peanut Reader) eBook] | PDB | No |
| erlang [Erlang Source Code3] | ERL, ES | No |
| es3 [e-Szigno signed xml document] | ES3 | No |
| esri-projection-metadata [ESRI Projection Metadata (PRJ) file] | PRJ | No |
| est [Microsoft Streets & Trips map] | EST | No |
| etl [MS Windows Event Trace Log] | ETL | No |
| etv [ETV video file] | ETV | No |
| evp [EnVision Publisher file] | EVP, EVT | No |
| evt [Microsoft Windows NT Event Log] | EVT | No |
| evtx [Microsoft Windows Vista Event Log] | EVTX | No |
| ewb [Electronics Workbench (EWB) file] | EWB | No |
| exe [MSDOS/Windows executable] | EXE | No |
| exp [Microsoft Visual C++ Export file] | EXP | No |
| exr [OpenEXR image format] | EXR | No |
| f26 [Open Document Architecture (ODA / ODIF) FOD26] | F26 | No |
| f36 [Open Document Architecture (ODA / ODIF) FOD36] | F36 | No |
| f4a [Adobe Flash Player audio] | F4A | No |
| f4b [Adobe Flash Player audio book] | F4B | No |
| f4p [Adobe Flash Player protected video] | F4P | No |
| f4v [Adobe Flash Player video] | F4V | No |
| fantom [Fantom Source Code4] | FAN | No |
| faxx [IFF-FAXX Facsimile image] | faxx | No |
| fb2 [FictionBook e-book XML format] | FB2 | No |
| fbm [DELFTship or FREE!ship model] | FBM | No |
| fbx-ascii [Kaydara FBX project (ASCII)] | FBX | No |
| fbx-binary [Kaydara FBX project (binary)] | FBX | No |
| fcs [Flow Cytometry Standard document] | FCS | No |
| fcstd [FreeCAD document] | FCSTD | No |
| fdb [Firebird database] | FDB | No |
| fdf [PDF Forms Data Format] | FDF | No |
| fff [Folio Flat File] | FFF | No |
| ffx [Microsoft Office Fast Find Index] | FFX | No |
| fig [Facility for Interactive Generation of figures (FIG) image format] | FIG | No |
| filemaker [Filemaker MAC] | FP5, FP7 | No |
| first-choice-db [PFS First Choice database] | FOL | No |
| first-choice-spreadsheet [PFS First Choice spreadsheet] | SS | No |
| first-choice-wp-doc [PFS First Choice word-processing document] | DOC | No |
| fit [Flexible Image Transport System FITS image] | FIT | No |
| fkb [Flipkart eBook] | FKB | No |
| fla [Macromedia Flash FLA Project File OLE format] | FLA | No |
| flac [Free Lossless Audio Codec format] | FLAC | No |
| flash [Macromedia Flash (.swf)] | SWF, SWD | No |
| flashprint-xg [FlashForge FlashPrint XG-Code 3d-printer model] | GX | No |
| flash-shared-obj [Macromedia Flash shared object] | SOL | No |
| flex-fxp [Adobe Flash Flex project file format] | FXP | No |
| flif [Free Lossless Image Format (FLIF)] | FLIF | No |
| flipchart [ActivInspire flipchart document] | FLIPCHART | No |
| flo [RFFlow flowchart document] | FLO | No |
| flp [ActivStudio and ActivPrimary document] | FLP | No |
| flv [Flash video File] | FLV | No |
| flx [Graebert FelixCAD document] | FLX | No |
| fo [XSL Formatting Object (XSL-FO)] | FO, XSLFO | No |
| fodc [ODF Chart flat XML format] | FODC | No |
| fodf [ODF Formula flat XML format] | FODF | No |
| fodg [ODF Drawing/Graphics flat XML format] | FODG | No |
| fodi [ODF Image flat XML format] | FODI | No |
| fodp [ODF Presentation flat XML format] | FODP | No |
| fods [ODF Spreadsheet flat XML format] | FODS | No |
| fodt [ODF Text flat XML format] | FODT | No |
| forth [Forth Source Code4] | FOR, FORTH | No |
| fortran [Fortran Source Code3] | F | No |
| founder-ceb [Founder Chinese E-paper Basic (ceb)] | CEB | No |
| foxpro-fxp [FoxPro compiled source format] | FXP | No |
| fpm [Microsoft FrontPage macro file format] | FPM | No |
| fpml [FpML (Financial products Markup Language) document] | No | |
| fppx [Microsoft Fresh Paint image] | FPPX | No |
| fpx [Kodak FlashPix FPX Image format] | FPX | No |
| framemaker [FrameMaker] | FM, FRM | No |
| frame-vector-fmv [Frame Vector Metafile] | FMV | No |
| framework-ii-office [Framework II office suite] | FW3 | No |
| framework-office [Framework office suite] | No | |
| freearc-arc [FreeArc archive format] | ARC | No |
| freehand [Adobe/Macrovision FreeHand image] | FH3, FH4, FH5, FH7, FH8, FH9, FH10, FH11 | No |
| freemarker [FreeMarker Source Code4] | FTL | No |
| frege [Frege Source Code4] | FR | No |
| fritzing [Fritzing Software XML file] | FZ, FZB, FZP | No |
| fritzing-bundled-binary [Fritzing Software bundled bin file] | FZBZ | No |
| fritzing-part [Fritzing Software part file] | FZPZ | No |
| fritzing-project [Fritzing Software project file] | FZZ | No |
| frm [MySQL table definition file] | FRM | No |
| fsharp [F# Source Code3] | FS | No |
| fst [FutureVision FST video] | FST | No |
| fts [Microsoft Windows 95/NT help full-text-search file] | FTS | No |
| g [G-code Source Code4] | G | No |
| g31d [CCITT G3 1D] | No | |
| game-maker [Game Maker Language Source Code4] | GML | No |
| gams [GAMS Source Code4] | GMS | No |
| gap [GAP Source Code4] | No | |
| gb [GenBank DNA character sequence document] | GB | No |
| gbr [Gerber image format] | GBR | No |
| gbxml [Green Building XML (gbXML) file] | XML | No |
| gdiff [GDIFF (Generic Diff) document] | No | |
| gd-image [GD Library image] | GD, GD2 | No |
| gds [GDSII data format] | GDS, GDS2 | Partial |
| gdscript [GDScript Source Code4] | GD | No |
| gdx [General Algebraic Modeling System (GAMS) Data Exchange (GDX) format] | GDX | No |
| gem [GEM VDI Metafile image] | GEM, GDI | No |
| gexf [Graph Exchange XML Format (GEXF)] | GEXF | No |
| ggb [Geogebra worksheet] | GGB | No |
| ggt [Geogebra tool] | GGT | No |
| gho [Ghost Disk Image File] | GHO, GHS | No |
| ghx [Grasshopper GHX format] | GHX | No |
| gif [Graphics Interchange Format] | GIF | No |
| gih [GIMP Animated Brush file] | GIH | No |
| gimp-brush [GIMP Brush file] | GBR | No |
| gis-world [ESRI GIS World file] | BPW, GFW, JGW, J2W, PGW, SDW, TFW, WLD | No |
| git-pack-idx [Git Pack Index format] | IDX | No |
| glb [Graphics Language (GL) Binary Transmission Format] | GLB | No |
| glowicon [IFF Glow Icon image] | info | No |
| glsl [GLSL Source Code4] | GLSL | No |
| gltf [GL Transmission Text Format] | GLTF | No |
| gnt [Micro Focus COBOL generated code file] | GNT | No |
| gnumeric [GNOME GNumeric document] | GNUMERIC | No |
| gnu-message-catalog-mo [GNU Message Catalog format] | MO | No |
| gnuplot [Gnuplot Source Code4] | GNU, GP | No |
| go [Go Source Code3] | GO | No |
| golo [Golo Source Code4] | GOLO | No |
| gom-g3d [GOM Atos 3D Scanner file] | G3D | No |
| gosu [Gosu Source Code4] | GS | No |
| gpg-key [GnuPG private key] | KEY | No |
| gpg-protected-key [GnuPG protected private key] | KEY | No |
| gpx [GPS Exchange Format] | GPX | No |
| gradle [Gradle Source Code4] | GRADLE | No |
| graffle [Omni Graffle XML File] | GRAFFLE | No |
| graphml [GraphML XML data] | GRAPHML | No |
| graphql [GraphQL Source Code4] | GRAPHQL | No |
| greatworks-chart [Symantec GreatWorks Chart document] | No | |
| greatworks-db [Symantec GreatWorks Database document] | No | |
| greatworks-draw [Symantec GreatWorks Draw document] | No | |
| greatworks-outline [Symantec GreatWorks Outline document] | No | |
| greatworks-spreadsheet [Symantec GreatWorks Spreadsheet document] | No | |
| greatworks-word [Symantec GreatWorks Word Processor document] | No | |
| grib [General Regularly-distributed Information in Binary form GRIB format] | GRB, GRIB2 | No |
| groovy [Groovy Source Code3] | GRT, GVY | No |
| grv [Microsoft Office Groove Format] | GRV | No |
| gsm [Archicad library part (GSM) file] | GSM | No |
| gst-dtp [GST/Greenstreet/Pressworks/Publish It/Timeworks document] | DTP | No |
| gul [Samsung Electronics Jungum Global document] | GUL | No |
| gvdesign [Gravit Designer document] | GVDESIGN | No |
| gwfs [GroupWise FileSurf email] | GWFS | No |
| gxc [General CADD Pro Component file] | GXC | No |
| gxd [General CADD Pro Drawing file] | GXD | No |
| gxf [General Exchange Format (GXF)] | GXF | No |
| gxl [Genus Graphics Library] | GX, GXL | No |
| gzip [GZ Compress archive] | GZ | Yes |
| h264 [MPEG JVT-NAL sequence H264 video] | 264 | No |
| h265 [High Efficiency Video Coding (HEVC) MP4 document] | HEVC, H265 | No |
| hack [Hack Source Code4] | No | |
| haml [Haml Source Code4] | HAML | No |
| hancom-cell [Hancom Office Cell 2010 document] | CELL | No |
| handlebars [Handlebars Source Code4] | HBS | No |
| har [HTTP Archive (HAR)] | HAR | No |
| harvard-graphics-cfg [Harvard Graphics Configuration File] | No | |
| harvard-graphics-pl [Harvard Graphics Palette] | PL | No |
| haskell [Haskell Source Code3] | HS | No |
| hdf4 [Hierarchical Data Format HDF4] | HDF, H4 | No |
| hdf5 [Hierarchical Data Format HDF5] | HDF, H5 | No |
| hdr [L3Harris Geospatial ENVI file] | HDR | No |
| heic [High Efficiency Image Format HEVC image] | HEIC | No |
| heics [High Efficiency Image Format HEVC image sequence] | HEICS | No |
| heif [High Efficiency Image Format image] | HEIF | No |
| heifs [High Efficiency Image Format image sequence] | HEIFS | No |
| hex [Intel Hex format] | IHEX | Yes |
| hfa [ERDAS Imagine image format] | HFA, RRD, AUX | No |
| hhe [HHE video] | HHE | No |
| hikvision-dvr [Hikvision DVR video] | No | |
| hl7 [Health level7 message] | HL7 | No |
| hlp [Windows Help File] | HLP | No |
| hlsl [HLSL Source Code4] | HLSL | No |
| hlsl-cso [DirectX High-Level Shader Language (HLSL) compiled shader object] | CSO | No |
| hlsl-fxo [DirectX High-Level Shader Language (HLSL) pre-compiled shader] | FXO | No |
| hnm-4 [CRYO HNM4 video] | HNM | No |
| hnm-6 [CRYO HNM6 video] | HNM, HNS | No |
| hpgl [HP Graphics Language] | HPGL, HPG | No |
| hpgl2 [HP Graphics Language (Plotter)] | HPG | No |
| hp-pclxl [HP Printer Control Language XL (PCL XL)] | PXL, PRN | No |
| hprof [HPROF Java Profiler document] | HPROF | No |
| hpux-exe [HPUX/PA-RISC COFF executable] | No | |
| hpux-lib [HPUX/PA-RISC COFF dynamic library] | SL | No |
| hpux-obj [HPUX/PA-RISC COFF relocatable object] | No | |
| hsf [HOOPS Streaming Format] | HSF | No |
| html [HTML] | HTM, HTML | No |
| hus [Husqvarna Viking HUS embroidery format] | HUS | No |
| hw [HP Word PC] | HW | No |
| hwp [Haansoft Hangul HWP (Arae-Ah Hangul)] | HWP | No |
| hwpx [Hangul HWPX document] | HWPX | No |
| hy [Hy Source Code4] | HY | No |
| i4 [IBM 1403 Line Printer] | I4 | No |
| iba [Apple iBooks Author eBook] | IBA | No |
| ibm-dca-fft [IBM Final Form] | IF, FFT | No |
| ibm-dsk [IBM SaveDskF (SKF) disk image] | DSK, 1DK, 2DK, 3DK | No |
| ibooks [Apple iBooks format] | IBOOKS | No |
| ic [DCF Script] | IC | No |
| icc [International Color Consortium files] | ICC, ICM | No |
| icedraw-idf [iCEDraw character graphics image] | IDF | No |
| ichat [Apple iChat format] | ICHAT | No |
| icns [Apple Icon image format] | ICNS | No |
| ico [Windows Icon Format] | ICO | No |
| ics [Microsoft Outlook iCalendar file format] | ICS, VCS | Yes |
| idl [IDL Source Code4] | PRO | No |
| idl-binary [IDL binary save file] | DAT, SAV | No |
| idml [Adobe InDesign IDML format] | IDML | No |
| idol-idx [IDOL Server IDX file] | IDX | No |
| idris [Idris Source Code4] | IDR | No |
| ie-cache [MS Internet Explorer cache file] | DAT | Yes |
| ifcxml [Industry Foundation Classes (IFC) XML document] | IFCXML | No |
| ifilter [iFilter] | No | |
| ifo [DVD Information (IFO) file] | IFO | No |
| igor-pro [IGOR Pro Source Code4] | IPF | No |
| igs [Initial Graphics Exchange Specification format] | IGS | Yes |
| ilbm [Interleaved BitMap image] | IFF | No |
| ilk [Microsoft Visual Studio incremental linker file] | ILK | No |
| im [Applix Bitmap image format] | IM | No |
| img [GEM Bit Image] | IMG | No |
| img2 [Apple iOS Image2 document] | IMG2 | No |
| img3 [Apple iOS Image3 document] | IMG3 | No |
| img4 [Apple iOS Image4 document] | IMG4, IM4M | No |
| indesign [Adobe InDesign document] | INDD | No |
| indesign-v1 [Adobe InDesign v1 document] | INDD | No |
| index [Git Index format] | INDEX | No |
| inform7 [Inform 7 Source Code4] | I7X | No |
| ini [Initialization (INI) file3] | No | |
| ins [InstallShield script document] | INS | No |
| installshield-archive [InstallShield archive (early versions) format] | EX_ | No |
| installshield-cab [InstallShield Cabinet Archive format] | CAB, HDR | No |
| int [Micro Focus Net Express intermediate file] | INT | No |
| interbase-db [InterBase database] | GDB | No |
| intercrypto-aep [InterCrypto Advanced Encrypted Package file] | AEP | No |
| intergraph-dgn [Intergraph Standard File Format (ISFF) V7 DGN (non-OLE)] | DGN | No |
| interleaf [Interleaf] | No | |
| interplay-acmp [Interplay ACMP audio] | No | |
| interplay-mve [Interplay MVE video format] | MVE | No |
| inx [InstallShield Compiled Rules file] | INX | No |
| ioke [Ioke Source Code4] | IK | No |
| ip [IBM DisplayWrite] | IP | No |
| ipa [iOS App Store Package] | IPA | No |
| ipd [Blackberry backup file] | IPD | No |
| ipfix [IP Flow Information Export (IPFIX) format] | IPFIX | No |
| ipx [Ipix spherical image] | IPX | No |
| ircam [IRCAM audio file] | IRCAM | No |
| ironcad-icd [IRONCAD drawing] | ICD | No |
| ironcad-ics [IRONCAD scene] | ICS | No |
| isabelle [Isabelle Source Code4] | No | |
| isatab-assay [ISA-Tab Assay document] | No | |
| isatab-investigation [ISA-Tab Investigation document] | No | |
| isatab-study [ISA-Tab Study document] | No | |
| isilo [PalmOS iSilo document] | PDB | No |
| ismacryp [ISMACryp 2.0 Encrypted format] | No | |
| iso [ISO-9660 CD Disc Image Format] | ISO | Yes |
| iso19139 [ISO 19139 Geographic Information Metadata] | ISO19139 | No |
| iso20022 [ISO 20022 document] | XML | No |
| iss [FunCom ISS audio] | ISS | No |
| isu [InstallShield Uninstall format] | ISU | No |
| is-xml [Extended or Custom XML] | XML | No |
| itc2 [iTunes Cover Flow image data] | ITC2 | No |
| itl [Apple iTunes music library] | ITL | No |
| ivf [IVF container document] | IVF | No |
| ivr [RealNetworks Internet Video Recording (IVR) file] | IVR | No |
| iwa [IBM Writing Assistant] | IWA | No |
| iwork-iwa [Apple iWork 2013 IWA document] | IWA | No |
| iwork-keynote [Apple iWork Keynote] | IWA, KEY | Yes |
| iwork-numbers [Apple iWork Numbers] | IWA, NUMBERS | Yes |
| iwork-pages [Apple iWork Pages] | IWA, PAGES | Yes |
| j [J Source Code4] | IJS | No |
| j2c [JPEG 2000 Codestream] | JP2, JPF, J2K, JPWL, JPX, PGX | No |
| jar [Executable Java Archive file] | JAR, PACK | Yes |
| jasmin [Jasmin Source Code4] | J | No |
| java [Java Source Code] | JAVA | Yes |
| java-jce-keystore [Java JCE Key Store format] | No | |
| jbf [PaintShop Pro JBF image cache file] | JBF | No |
| jbig [JBIG (JBIG1) image] | JBG, JBIG, BIE | No |
| jbig2 [JBIG2 File Format] | JB2, JBIG2 | No |
| jdf [JEOL NMR Spectroscopy JDF file] | JDF | No |
| jef [Janome JEF embroidery format] | JEF | No |
| jmsh [JMesh document] | JMSH | No |
| jng [JPEG Network Graphics] | JNG | No |
| jnlp [Java Network Launching Protocol] | JNLP | No |
| jnt [Windows Journal format] | JNT, JTP | No |
| jolie [Jolie Source Code4] | No | |
| jp2 [JPEG 2000 image] | JP2, JPM, JPX, MJ2, MJP2 | No |
| jpeg [JPEG File Interchange Format] | JPG, JPEG, JFIF, JFI | Yes |
| jq [JSONiq Source Code4] | JQ | No |
| js [Javascript Source Code] | JS | Yes |
| json [JSON document] | JSON | Yes |
| jsx [JSX Source Code4] | JSX | No |
| jt [UGS Jupiter Tesselation file] | JT | No |
| jtd [ICHITARO (v4-10)] | JTD | No |
| jtdc [ICHITARO Compressed format] | JTDC | No |
| julia [Julia Source Code4] | JL | No |
| jv [Bitmap Brothers JV video] | JV | No |
| jvx [JavaView XML (JVX) format] | JVX | No |
| jxl [JPEG XL image] | JXL | No |
| jxr [JPEG XR (extended range) image format] | JXR, HDP | No |
| karbon [KOffice Karbon document] | KARBON | No |
| kbx [GnuPG keybox document] | KBX | No |
| kdb [Keepass Password file] | KDB, KDBX | No |
| kddi-video [KDDI Video file] | No | |
| kdh [Chinese Academic Journal KDH document (2000-2005)] | KDH, CAJ | No |
| keychain [MacOS keychain database] | KEYCHAIN, KEYCHAIN-DB | No |
| kfx-aux [Amazon KFX eBook auxiliary format (2015)] | KFX, AZW | No |
| kfx-ion [Amazon KFX eBook Ion format (2015)] | KFX, AZW, ION | No |
| kgb [KGB Archiver document] | KGB | No |
| kicad-layout [KiCad Layout document4] | No | |
| kicad-mod [KiCad Footprint document] | KICAD_MOD | No |
| kicad-pcb [KiCad Schematic PCB document] | KICAD_PCB | No |
| kicad-sch [KiCad Schematic SCH document] | KICAD_SCH | No |
| kicad-sch-legacy [KiCad Eeschema Schematic document4] | SCH | No |
| kicad-sym [KiCad Symbols document] | KICAD_SYM | No |
| kicad-wks [KiCad Worksheet document] | KICAD_WKS | No |
| kindle-topaz-azw [Amazon Kindle Topaz eBook] | AZW, AZW1, TPZ | No |
| kml [Keyhole Markup Language] | KML | No |
| kmz [Zipped Keyhole Markup Language] | KMZ | No |
| kno [PalmOS SuperMemo document] | KNO, PDB | No |
| koffice-presenter [KOffice KPresenter document] | KPR | No |
| koffice-presenter-gz [KOffice (up to v1.1) kPresenter document] | KPR | No |
| koffice-spread [KOffice KSpread document] | KSP | No |
| koffice-spread-gz [KOffice (up to v1.1) kSpread document] | KSP | No |
| kolor-kro [Kolor Raw image] | KRO | No |
| kotlin [Kotlin Source Code4] | KT | No |
| kplato [KOffice KPlato document] | KPLATO | No |
| kra [Krita image] | KRA | No |
| ks [Java Key Store format] | KS | No |
| ktx [KTX image format] | KTX | No |
| kwd [KOffice KWord document] | KWD | No |
| kwd-gz [KOffice (up to v1.1) kWord document] | KWD | No |
| las [LAS LIDAR file] | LAS, LAZ | No |
| lasergraphics [Lasergraphics Language] | No | |
| lasso [Lasso Source Code4] | LAS, LASSO | No |
| lbl2 [Planetary Data System data version 2] | LBL | No |
| lbl3 [Planetary Data System data version 3] | LBL | No |
| lblx [Planetary Data System data version 4] | LBLX | No |
| ldf [Microsoft SQL Server log] | LDF | No |
| ledes-budgeting [LEDES Budgeting XML document] | No | |
| ledes-ebilling-v1998 [LEDES eBilling v1998 document] | No | |
| ledes-ebilling-v2000 [LEDES eBilling v2000 XML document] | No | |
| ledes-ipmm [LEDES Intellectual Property Matter Management (IPMM) XML document] | No | |
| ledes-timekeeper [LEDES Timekeeper XML document] | No | |
| lfe [LFE Source Code4] | LFE | No |
| limbo [Limbo Source Code4] | No | |
| lisp [Common Lisp Source Code3] | EL | No |
| lit [Microsoft Reader eBook file] | LIT | No |
| livescript [LiveScript Source Code4] | LS | No |
| lnk [Windows shortcut file] | LNK | No |
| locoscript-doc [LocoScript document] | No | |
| lolcode [LOLCODE Source Code4] | LOL | No |
| lotus-123-rel9 [Lotus 1-2-3 Release 9] | 123 | No |
| lotus-123-v97 [Lotus 1-2-3 97] | 123 | No |
| lotus-123-worksheet [Lotus 1-2-3] | WKS, WK1, WK3, WK4 | No |
| lotus-amipro [Lotus Ami Pro] | SAM | No |
| lotus-amipro-draw [Lotus Ami Pro Draw] | SDW | No |
| lotus-amipro-stylesheet [Lotus Ami Pro Style Sheet] | No | |
| lotus-apr [Lotus Approach format] | APR, MPR | No |
| lotus-domino-dxl [IBM Domino Data in XML format (.dxl)] | DXL | No |
| lotus-fm3 [Lotus 1-2-3 Formatting] | FM3 | No |
| lotus-freelance [Lotus Freelance] | FLW, PRE, PRS, PRZ | No |
| lotus-freelance-graphics [Lotus Freelance Graphics image] | DRW | No |
| lotus-freelance-v96 [Lotus Freelance 96] | PRZ | No |
| lotus-freelance-v97 [Lotus Freelance 97] | PRZ | No |
| lotus-imp [Lotus Improv spreadsheet] | IMP | No |
| lotus-lwp96 [Lotus Word Pro 96] | LWP, MWP | No |
| lotus-lwp97 [Lotus Word Pro 97] | LWP, MWP | No |
| lotus-notes-bitmap [Lotus Notes Bitmap] | No | |
| lotus-notes-cdf [Lotus Notes CDF] | CDF | No |
| lotus-notes-nsf [IBM Lotus Notes Database NSF/NTF] | NSF | No |
| lotus-org [Lotus Organizer documents] | OR2, OR3, OR4, OR5, OR6 | No |
| lotus-org-plt [Lotus Organizer print/paper layout file] | PLT | No |
| lotus-org-report [Lotus Organizer report document] | REP | No |
| lotus-pic [Lotus PIC] | PIC | No |
| lotus-screencam [Lotus ScreenCam] | SCM | No |
| lotus-smarticon [Lotus Smart Icon image file] | SMI | No |
| lotus-symphony [Lotus Symphony spreadsheet] | WR1 | No |
| lqt [Liquid Audio] | LQT | No |
| lrf [Broad Band eBook (BBeB) in LRF format] | LRF | No |
| lsdyna-binout [LS-DYNA binary output (binout) format] | No | |
| lsdyna-state-db [LS-DYNA State Database format] | No | |
| lsm [Linux Software Map] | LSM | No |
| lua [Lua Source Code3] | LUA | No |
| luac [Lua bytecode file] | LUAC | No |
| lvf [Lightweight Video Format (LVF)] | LVF | No |
| lwob [LightWave Object format] | LWOB | No |
| lws [LightWave Scene (LWSC) document] | LWS | No |
| lxf [Leitch Exchange Format video (LXF)] | LXF | No |
| lyr [ESRI Layer file] | LYR | No |
| lyrix [Lyrix Word Processing] | No | |
| lyx [LyX document] | LYX | No |
| lz [lzip compressed archive] | LZ | No |
| lz4 [LZ4 compressed file] | LZ4 | No |
| lzfse [Lempel-Ziv Finite State Entropy (LZFSE) compression format] | LZFSE | No |
| lzh [LZH Archive] | LZH, LHA | No |
| lzma [LZMA compressed data format] | LZMA | No |
| lzo [lzop compressed archive] | LZO | No |
| lzx [LZX compressed archive] | LZX | No |
| m1 [MASS-11] | M1, M11 | No |
| m2ts [MPEG-2 Transport Stream video] | M2TS | No |
| m3u [MPEG audio playlist format] | M3U | No |
| m4a [Apple MPEG-4 Part 14 audio] | M4A | No |
| m4b [Apple MPEG-4 Part 14 audio book] | M4B | No |
| m4p [Apple MPEG-4 Part 14 protected audio] | M4P | No |
| m4v [Apple MPEG-4 Part 14 video] | M4V | No |
| ma [Autodesk Maya ASCII file format] | MA | No |
| mac-alias [Mac OS alias file] | No | |
| mac-bin [MacBinary] | BIN | Yes |
| macdraft-drw [MacDraft drawing] | DRW, MDD | No |
| macdraw [MacDraw drawing] | No | |
| mach-o [Mac OS-X (Mach-O) executable format] | No | |
| macos-scap [MacOS Secure Capsule firmware update] | SCAP | No |
| macpaint [MacPaint] | MAC, PIC, PNTG | No |
| mac-pict [Macintosh Raster / QuickDraw Picture] | PCT | No |
| macromedia-director [Macromedia Shockwave/Adobe Director] | DCR, DXR, DIR | No |
| macwrite [MacWrite] | No | |
| macwriteii [MacWrite II] | No | |
| mad [Electronic Arts MAD video file] | MAD | No |
| maelstrom-anm [Maelstrom ANM animation] | ANM | No |
| maff [Mozilla Archive File Format (MAFF)] | MAFF | No |
| mail [Internal mail file produced by KeyView extraction from a mail container format] | No | |
| makefile [Makefile3] | MAKE | No |
| maker-markup [Maker Markup Language] | No | |
| manifest [MS Visual Studio manifest file] | MANIFEST | No |
| mapsforge [Mapsforge binary file] | MAP | No |
| mar [Mozilla Archive package] | MAR | No |
| marc [Machine-Readable Cataloging (MARC21) format] | MARC | No |
| marc-xml [Machine-Readable Cataloging (MARC) XML format] | XML | No |
| markdown [Markdown Source Code4] | MD | No |
| mat [MATLAB file format] | MAT, FIG | Partial |
| mathematica [Wolfram Mathematica Source Code3] | M | No |
| mathml [MathML document] | MML, MATHML | No |
| matlab/obj-c [Matlab/Objective-C Source Code] | M, MM | Yes |
| matlab-p [Matlab P-code file] | P | No |
| maud [IFF-MAUD MacroSystem audio format] | No | |
| max [Max Source Code4] | MXT | No |
| maxscript [MAXScript Source Code4] | MS | No |
| mb [Autodesk Maya binary file] | MB | No |
| mbp [Amazon Kindle or Mobipocket eBook auxiliary data file] | MBP | No |
| mcd [Mathcad MCD document] | MCD | No |
| mcp [CodeWarrior C/C++ project] | MCP | No |
| mcrypt-nc [mcrypt encrypted document] | NC | No |
| mda-v2000 [Microsoft Access 2000] | MDA, MDB | No |
| mda-v95 [Microsoft Access 95] | MDA, MDB | No |
| mda-v97 [Microsoft Access 97] | MDA, MDB | No |
| mdb [Microsoft Access (versions 1 and 2)] | MDB | No |
| mdf [Microsoft SQL Server primary database file] | MDF | No |
| mdi [Microsoft Document Imaging Format] | MDI | No |
| mds [RIFF MIDS MIDI stream] | MDS | No |
| mediawiki [MediaWiki File3] | No | |
| memgraph [Memgraph database plist format] | MEMGRAPH | No |
| memgraph-xml [Memgraph database XML format] | MEMGRAPH | No |
| mercury [Mercury Source Code4] | No | |
| metalink [Metalink XML format] | METALINK | No |
| mets [Metadata Encoding and Transmission Standard (METS) XML format] | METS | No |
| mfa-photo-player [MAF Photo Player] | No | |
| mf-cobol-lbr [Micro Focus COBOL library] | LBR | No |
| mfl [Mozilla XUL Fastload format] | MFL | No |
| mht [MIME HTML MHTML format (MHT)] | MHT, MHTML | No |
| mic [Microsoft Image Composer format] | MIC | No |
| microstation-dgn [MicroStation V8 DGN (OLE)] | DGN | No |
| mid [MIDI audio] | MID, MIDI | No |
| mif [Adobe FrameMaker Interchange Format (MIF)] | MIF | No |
| miff [Magick Image File Format] | MIF, MIFF | No |
| mig [MS Windows Easy Transfer file] | MIG | No |
| mind [MindMeister mind map] | MIND | No |
| minibae [miniBAE Sound Bank audio] | GM, HSB, RMF | No |
| minitab-mpx [Minitab project v19-] | MPX | No |
| mischief-art [Mischief vector graphics image format] | ART | No |
| mix [PhotoDraw MIX image] | MIX | No |
| mjp [VTech MHP video format] | MJP | No |
| mkv [Matroska video/audio File] | MKV, MKA | No |
| mlp [Meridian Lossless Packing Audio file] | MLP | No |
| mls [KIDASA Milestones Professional/Simplicity document] | MLS, ML3, ML4, ML5, ML6, ML7, ML8, ML9, MLA | No |
| mmap [MindManager map] | MMAP | No |
| mmas [MindManager style file] | MMAS | No |
| mmat [MindManager template] | MMAT | No |
| mmf [Synthetic music Mobile Application Format] | MMF | No |
| mmp [MindManager legacy (MMP) map] | MMP | No |
| mng [Multiple-image Network Graphics] | MNG | No |
| mny [Microsoft Money format] | MNY | No |
| modelica [Modelica Source Code4] | MO | No |
| mods [Metadata Object Description Schema (MODS) XML format] | MODS | No |
| modula2 [Modula-2 Source Code4] | MOD | No |
| mom [Mindomo mind map] | MOM, PMOM | No |
| monkey [Monkey Source Code4] | MONKEY | No |
| moocode [Moocode Source Code4] | MOO | No |
| more [MORE Database MAC] | No | |
| mov [QuickTime video] | MOV, QT, MP4 | No |
| mozilla-lz4 [Mozilla mozLZ4 compressed data] | BAKLZ4, JSONLZ4, MOZLZ4 | No |
| mp3 [MPEG-1 Audio layer3 (MP3)] | MPEGA, MPG, MP3 | No |
| mp4 [ISO/IEC MPEG-4 (ISO 14496) format] | MP4 | Yes |
| mp4-avc [ISO-BMFF MPEG-4 with AVC extension] | No | |
| mpc [Musepack audio format] | MPC | No |
| mpeg [MPEG Movie] | No | |
| mpeg21 [MPEG-21] | No | |
| mpeg-seq [MPEG Sequence format] | No | |
| mpeg-ts [MPEG Transport Stream data] | TS, M2T, M2TS, MTS | No |
| mpj [Minitab project up to v18] | MPJ | No |
| mpp-v2000 [Microsoft Project 2000] | MPP | No |
| mpp-v2007 [Microsoft Project 2007] | MPP | No |
| mpp-v4.1 [Microsoft Project 4.1] | MPP | No |
| mpp-v4 [Microsoft Project 4] | MPP | No |
| mpp-v98 [Microsoft Project 98] | MPP | No |
| mps [Microsoft Pocket Streets map] | MPS | No |
| mqv [Mobile QuickTime video] | MQV | No |
| mrc [MRC CCP4 2014 image] | MRC | No |
| mrc-dv [MRC Deltavision (DV) / Priism image] | DV | No |
| mrsid [LizardTech MrSID image format] | SID | No |
| ms-access-snp [Microsoft Access snapshot file] | SNP | No |
| ms-atwork [Microsoft AtWork Fax format] | AWD | No |
| ms-aw [Microsoft Answer Wizard file] | aw | No |
| ms-binder [Microsoft Office Binder format] | OBP | No |
| mscardfile [Microsoft Windows Cardfile address book format] | CRD | No |
| msclip [Microsoft Windows Clipboard document] | CLP | No |
| ms-dib [Microsoft Device Independent Bitmap] | DIB | No |
| ms-dos-compression [Microsoft MS-DOS installation compression (SZDD, KWAJ)] | EX_ | No |
| ms-dpapi [Microsoft Data Protection API (DPAPI) data] | No | |
| ms-dts [Microsoft Data Transformation Services (DTS) package file] | DTS | No |
| ms-equation [Microsoft Equation Editor object] | No | |
| msg [Microsoft Outlook message] | MSG, OFT | Partial |
| ms-graphedit [Microsoft GraphEdit File format] | GRF | No |
| msh [GMSH Mesh polygon format] | MSH | No |
| ms-help2 [Microsoft Help 2.0 format] | HXD, HXW, HXH | No |
| msi [MSI Windows Installer format] | MSI | No |
| ms-infopath [Microsoft InfoPath document] | XSN | No |
| ms-infopath-xsf [Microsoft InfoPath form definition] | XSF | No |
| ms-instrument-def [Microsoft MIDI Instrument Definition File] | IDF | No |
| msix [Microsoft MSIX application package] | MSIX | No |
| msl [MS Visual Studio schema mapping file] | MSL | No |
| ms-management-pack-mpx [Microsoft Systems Center Operation Manager (SCOM) management pack MPX format] | MPX | No |
| ms-mappoint [Microsoft MapPoint map] | PTM | No |
| ms-mathematics [Microsoft Mathematics worksheet] | GCW | No |
| ms-multiplan [Microsoft Multiplan] | No | |
| mso [Microsoft ActiveMime (mso) documents] | MSO | No |
| ms-oedbx [Microsoft Outlook Express DBX Message Database] | DBX | No |
| ms-oedbx-folder [Outlook Express DBX folder database format] | DBX | No |
| msoffice-drawing [Microsoft Office Drawing] | No | |
| edb [Microsoft Exchange Server Database file format] | EDB | No |
| msoffice-graph [Microsoft Office Graph file] | GRA, XLS | No |
| msoffice-rms [Office 2007 document often RMS-encrypted] | DOCX, XLSX, PPTX, XLSB | No |
| msoffice-theme [Microsoft Office theme format] | THMX | No |
| msoffice-tmp [Microsoft Office temporary owner file] | No | |
| ms-offline-map [Microsoft Windows offline map data] | DAT | No |
| ms-outlook-vcard [Microsoft Outlook vCard file format] | VCF | No |
| msp [Microsoft Windows Installer Patch Package (MSP) format] | MSP | No |
| ms-paint-msp [Microsoft Paint image] | MSP | No |
| ms-pdb [Microsoft Program Database format] | PDB | No |
| ms-photo-editor [Microsoft Photo Editor 'embedded GIF' file] | No | |
| ms-pocket-excel [Microsoft Pocket Excel] | PXL | No |
| ms-pocket-word [Microsoft Pocket Word] | PWD, PSW, PWI | No |
| ms-prefetch [Microsoft Windows Prefetch (uncompressed) file] | PF | No |
| ms-prefetch-compressed [Microsoft Windows Prefetch (compressed) file] | PF | No |
| ms-process-monitor-xml [Microsoft Process Monitor (XML) log] | XML | No |
| ms-project-activity [Microsoft Project (up to version 3) activity file] | No | |
| ms-project-calc [Microsoft Project calc file (up to version 3) ] | No | |
| ms-project-exchange-mpx [Microsoft Project Exchange format] | MPX | No |
| ms-project-resource [Microsoft Project (up to version 3) resource file] | No | |
| ms-publisher-v3 [Microsoft Publisher (up to version 3)] | PUB | No |
| ms-publisher-v98 [Microsoft Publisher from version 98] | PUB | No |
| m-src [M Source Code4] | M | No |
| ms-report-rdl [Microsoft SQL Server Report Definition Language (RDL) document] | RDL | No |
| ms-speech-data [Microsoft text-to-speech Speech Data File] | SPD | No |
| ms-speech-def [Microsoft text-to-speech Speech Definitions File] | SDF | No |
| ms-sql-ce-db [Microsoft SQL Server Compact (CE) edition database] | SDF | No |
| ms-sql-rds [Microsoft SQL Server Shared Report Data Source (RDS) document] | RDS | No |
| ms-sql-rsd [Microsoft SQL Server Shared Dataset (RSD) document] | RSD | No |
| mst [Microsoft Windows Installer Transform (MST) format] | MST | No |
| ms-visual-sourcesafe-scc [Microsoft Visual SourceSafe SCC (Source Code Control) file] | SCC | No |
| ms-vs-sdf [Microsoft Visual Studio browsing database (sdf) file] | SDF | No |
| ms-win-shim-db [Microsoft Windows Shim Database file] | SDB | No |
| ms-wm [WordMARC Composer] | WM, PW | No |
| ms-word-driver [Microsoft Word Driver (up to version 6) ] | No | |
| ms-word-glossary [Microsoft Word Glossary (up to version 6) ] | No | |
| ms-word-misc [Microsoft Word Miscellaneous (up to version 6) ] | No | |
| ms-word-stylesheet [Microsoft Word Style Sheet (up to version 6) ] | No | |
| ms-works-comm [Microsoft Works Communication for MAC] | No | |
| ms-works-comm-v3-4 [Microsoft Works Communication version 3 and 4] | No | |
| ms-works-db [Microsoft Works Database] | No | |
| WDB | No | |
| ms-works-db-v3-4 [Microsoft Works Database version 3 and 4] | WDB | No |
| ms-works-draw-v3-4 [Microsoft Works for Mac Draw version 3 and 4] | MSW | No |
| ms-works-ss [Microsoft Works Spreadsheet] | No | |
| WKS, S30, S40 | No | |
| ms-works-ss-v3-4 [Microsoft Works Spreadsheet version 3 and 4] | WKS | No |
| ms-works-wp [Microsoft Works Word Processor] | MWK, W40, WPS, | No |
| ms-works-wp-v3-4 [Microsoft Works Word Processor version 3 and 4] | MSW, WPS | No |
| mtf [Microsoft Tape Format] | MTF, BAK | No |
| mth [Nintendo GameCube video file] | MTH | No |
| mtl [Wavefront Material Template Library (MTL)] | MTL | No |
| mtv [Chinese MP4/MTV video] | MTV | No |
| mtw [Minitab worksheet v5-6] | MTW | No |
| mtw12 [Minitab worksheet v12-13] | MTW | No |
| mtw14 [Minitab worksheet v14-18] | MTW | No |
| multimate [MultiMate] | MM | No |
| multimate-adv [MultiMate Advantage] | No | |
| multimate-adv-fnote [MultiMate Advantage Footnote File] | No | |
| multimate-advii [MultiMate Advantage II] | No | |
| multimate-advii-fnote [MultiMate Advantage II Footnote File] | FBX, FNX | No |
| multimate-fnote [MultiMate Footnote File] | MMFN | No |
| mus [Finale audio format] | MUS | No |
| mv [IRIX Silicon Graphics moviemaker video file] | MV, MOVIE | No |
| mva [Matrox Setup Program Archive MVA file] | MVA | No |
| mvdx [MindView mind map] | MVDX, MVTX | No |
| mwx [Minitab worksheet v19-] | MWX | No |
| mxd [ArcMap Map Exchange Document project (MXD)] | MXD | No |
| mxf [Material Exchange Format audio-video container format] | MXF | No |
| mxl [MusicXML format] | MXL | No |
| mxml [MXML UI markup language XML format] | MXML | No |
| myi [MySQL MyISAM Table index] | MYI | No |
| nab [Netscape Address Book format] | NAB | No |
| nb [Wolfram Mathematica Notebook Format] | NB | No |
| nbi-async-archive [NBI Async Archive Format] | No | |
| nd [Navy Document Interchange Format] | ND | No |
| nef [Nero Encrypted File] | NEF | No |
| nero-aac [Nero AAC audio] | No | |
| nero-mp4 [Nero MPEG-4 profile] | No | |
| nero-mp4-avc [Nero MPEG-4 profile with AVC extension] | No | |
| nes [Nintendo Entertainment System (NES) ROM] | NES | No |
| nes-sound-nsf [NES Sound File] | NSF | No |
| netcdf-nc [Network Common Data Form NetCDF format] | NC | No |
| netlmmerse-nif [Gamebryo NetImmerse file] | NIF | No |
| netlogo [NetLogo Source Code4] | NLOGO | No |
| netscape-bookmark [Netscape Bookmark File] | No | |
| netware-packed [Novell Personal NetWare packed file] | No | |
| newlisp [NewLisp Source Code4] | NL | No |
| news-font [NeWS bitmap font] | No | |
| nginx-conf [Nginx Source Code4] | VHOST | No |
| nif [Notation Interchange File Format] | NIF | No |
| nii [NIfTI (NII) neuroimaging document] | NII | No |
| nios-top [NIOS TOP] | No | |
| nist [NIST SPeech HEader REsources format] | NIST | No |
| nist-itl [NIST-ITL standard data] | XML | No |
| nitf [National Imagery Transmission Format NITF image] | NTF, NITF | No |
| nix [Nix Source Code4] | NIX | No |
| nl [NL Source Code4] | NL | No |
| nlm [Netware Loadable Module format] | NLM | No |
| nm5 [NovaMind v5 (NM5) document] | NM5, NM5TEMPLATE | No |
| nmind [NovaMind v4 (NMIND) document] | NMIND | No |
| nn [NBI OASys Net Archive Format] | NN | No |
| noff [NOFF 3D Object File Format] | NOFF | No |
| novastorm-video [Novastorm Media video file] | FA, FLM | No |
| npr [Steinberg Nuendo/CuBase file] | NPR | No |
| nps [Java NetBeans Profiler snapshot] | NPS | No |
| nra [Nero Audio-CD compilation file] | NRA | No |
| nri [Nero ISO compilation file] | NRI | No |
| nrrd [NRRD (nearly raw raster data) image format] | NRRD | No |
| nsif-nsf [NATO Secondary Image Format (NSIF) image] | NSF | No |
| nsis [NSIS Source Code4] | NSI | No |
| nsv [Nullsoft Video format (NSV)] | NSV | No |
| ntf [PostScript binary Font Descriptor file] | NTF | No |
| ntt-mp4 [NTT MPEG-4] | No | |
| nu [Nu Source Code4] | NU | No |
| nupkg [NuGet package] | NUPKG | No |
| nur [NURSTOR Drawing] | NUR | No |
| nut [NUT Open Container Format] | NUT | No |
| nuv [NuppelVideo file] | NUV | No |
| nvram [VMware BIOS NVRAM file] | NVRAM | No |
| nxv [NXV video] | NXV | No |
| nzb [NewzBin NZB format] | NZB | No |
| oab [MS Outlook Offline Address Book] | OAB | No |
| oasis [Open Artwork System Interchange Standard (OASIS) format] | OAS | Yes |
| oasys [Fujitsu OASYS] | OAS, OA2, OA3 | Yes |
| oberon-doc [Component Pascal / Oberon Document file] | ODC | No |
| obj-j [Objective-J Source Code3] | J | No |
| ocaml [OCaml Source Code4] | ml, mli | No |
| ocd [Orienteering CAD file] | OCD | No |
| ocf [Component Pascal / Oberon Code (executable and loadable object) file] | OCF | No |
| od11 [ODA / ODIF Q1 11] | OD | No |
| od12 [ODA / ODIF Q1 12] | OD | No |
| odb [ODF Database] | ODB | No |
| odc [ODF Chart] | ODC | No |
| odf [ODF Formula] | ODF | No |
| odf-formula-template [ODF Formula Template] | OTF | No |
| odg [ODF Drawing/Graphics] | ODG | No |
| odi [ODF Image] | ODI | No |
| odm [ODF Text Master] | ODM | No |
| odp [ODF Presentation] | ODP | Yes |
| ods [ODF Spreadsheet] | ODS | Yes |
| odt [ODF Text] | ODT | Yes |
| odttf [Obfuscated OpenType font (ODTTF)] | ODTTF | No |
| odx [Vector Open Diagnostic Data Exchange format] | ODX | No |
| ofr [OptimFROG audio] | OFR, OFS | No |
| ofx [Open Financial Exchange XML file] | OFX | No |
| ofx1 [Open Financial Exchange version 1 file] | OFX | No |
| ogg [General Ogg Container format] | OGG | No |
| ogg-bbc-dirac [Ogg BBC Dirac video format] | OGV | No |
| ogg-daala [Ogg Daala video format] | OGV | No |
| ogg-flac [Ogg Container FLAC audio format] | OGG | No |
| ogg-ogm [Ogg OGM video format] | OGM | No |
| ogg-opus [Ogg Opus audio format] | OGG | No |
| ogg-speex [Ogg Speex audio format] | SPX | Yes |
| ogv [Ogg Theora Video format] | OGV | No |
| ole [OLE Compound Document] | OLE | No |
| ole-dib [OLE DIB object] | No | |
| olidif [Olivetti] | No | |
| olm [Microsoft Outlook for Macintosh format] | OLM | No |
| oma [Sony OpenMG Audio (OMA) container file] | OMA, OMG | No |
| oma-drm [OMA DRM (ISOBMFF) Format] | No | |
| ome-xml [Open Microscopy Environment (OME) XML document] | XML | No |
| omnipage-met [Caere OmniPage MET document] | MET | No |
| omnis-studio [Omnis Studio file] | DF1, LBR, LBS | No |
| onenote [Microsoft OneNote] | ONE, ONEPKG, ONETOC2 | Yes |
| onenote-alternate [OneNote Alternative Packaging Format] | No | |
| onix [ONIX Message] | No | |
| onm [Legato Extender Native Message ONM] | ONM | No |
| oo3 [Omni Outliner V3 File] | OO3 | No |
| ooutline [OOutliner File] | OOUTLINE | No |
| op2 [Nastran OP2 format] | OP2 | No |
| opd [Caere OmniPage OPD document] | OPD | No |
| opencl [OpenCL Source Code4] | CL | No |
| openctm [OpenCTM document] | CTM | No |
| openedge-abl [OpenEdge ABL Source Code4] | No | |
| open-inventor-ascii [Open Inventor ASCII format] | IV | No |
| open-inventor-binary [Open Inventor Binary format] | IV | No |
| openscad [OpenSCAD Source Code4] | SCAD | No |
| opf [Open eBook (OEBPS) XML format] | OPF | No |
| opml [Omni Outliner OPML File] | OPML | No |
| opx [OrgPlus Organization Chart] | OPX | No |
| ora [OpenRaster image] | ORA | No |
| orf [Olympus ORF image] | ORF | No |
| origin-mve [Origin Wing Commander III MVE movie format] | MVE | No |
| os2-help [OS/2 Help/INF document] | HLP, INF | No |
| os2-ico [OS/2 icon] | ICO | No |
| os2-pm-met [OS/2 PM Metafile] | MET | No |
| osf [Component Pascal / Oberon Symbol file] | OSF | No |
| osm [OpenStreetMap XML data] | OSM | No |
| ost [Microsoft Outlook Offline Folders File (OST)] | OST | No |
| otc [ODF Chart Template] | OTC | No |
| otf [OpenType Font] | OTF | No |
| otg [ODF Drawing/Graphics Template] | OTG | No |
| oth [ODF Text Web] | OTH | No |
| oti [ODF Image Template] | OTI | No |
| otp [ODF Presentation Template] | OTP | No |
| ots [ODF Spreadsheet Template] | OTS | No |
| ott [ODF Text Template] | OTT | No |
| ow [Office Writer] | OW | No |
| ox [Ox Source Code4] | OX | No |
| oxt [ODF Extension format] | OXT | No |
| oxygene [Oxygene Source Code4] | OXYGENE | No |
| oz [Oz Source Code4] | OZ | No |
| p12 [PKCS #12 (p12) format] | P12, PFX | No |
| p7s [PKCS #7 cryptographic format] | P7S | No |
| pa [PowerArchiver PA compression format] | PA | No |
| pab [Microsoft Outlook Personal Address Book (PAB)] | PAB | No |
| pac [Lossless Predictive Audio Compression file] | PAC | No |
| pack [Git Packfile format] | PACK | No |
| pae [PowerArchiver Encrypted (PAE) file] | PAE | No |
| pae-v2 [PowerArchiver Encrypted version 2 (PAE2) file] | PAE2 | No |
| pagemagic-dtp [NEBS PageMagic format] | DTP | No |
| pagemaker [PageMaker] | No | |
| pagemaker-document [Adobe PageMaker document] | PMD | No |
| palmos-exe [PalmOS executable] | PRC | No |
| palmos-lib [PalmOS dynamic library] | PRC | No |
| pam [Portable Arbitrary Map (PAM) image] | PAM | No |
| pan [Pan Source Code4] | PAN | No |
| panasonic-camera [Panasonic Digital Camera image] | No | |
| paperport-max [PaperPort MAX image file] | MAX | No |
| paradox-db [Borland Paradox database] | DB | No |
| parasolid [Parasolid] | X_B, X_T | Yes |
| paris-audio [Paris Audio Format] | FAP, PAF | No |
| parquet [Apache Parquet document] | PARQUET | No |
| parrot-asm [Parrot Assembly Source Code4] | PASM | No |
| pascal [Pascal Source Code3] | PASCAL | No |
| pat [GIMP Pattern file] | PAT | No |
| pawn [PAWN Source Code4] | PWN | No |
| pax [pax (portable archive exchange) archive] | PAX | No |
| pbf [OpenStreetMap Protocolbuffer Binary Format data file (.osm.pbf)] | PBF | No |
| pbit [Microsoft Power BI Desktop template format] | PBIT | No |
| pbix [Microsoft Power BI Desktop format] | PBIX | No |
| pbm [IFF Planar BitMap] | No | |
| pbm-abinary [Portable Bitmap Utilities BINARY format (PBM)] | PBM, PNM | No |
| pbm-ascii [Portable Bitmap Utilities ASCII format (PBM)] | PBM, PNM | No |
| pcap [TCPdump/Wireshark packet stream capture savefile format] | PCAP, PCAPNG, NTAR | Yes |
| pcb123 [PCB123 file] | 123 | No |
| pcd [Kodak Photo CD Image format] | PCD | No |
| pcf [X11 Portable Compiled Font file] | PCF | No |
| pch [Microsoft Visual C/C++ binary pre-compiled header] | PCH | No |
| pcl [HP Printer Command Language (PCL)] | PCL, PRN | No |
| pco [PC-Outline document] | PCO | No |
| pc-obj [DOS/Windows Object Module] | OBJ, EXP | No |
| pcpaint-image [PCPaint / Pictor Paint image format] | PIC | No |
| pcraster-map [PCRaster Map / Cross System Format geographical data] | MAP, CSF | No |
| pcs [Pfaff PCS embroidery image] | PCS | No |
| pcx [PC Paintbrush Graphics] | PCX | No |
| pdf [Adobe Portable Document Format] | Yes | |
| pdn [Paint.NET image] | PDN | No |
| pea [PEA (Pack, Encrypt, Authenticate) archive] | PEA | No |
| peachcalc-cal [PeachCalc] | CAL | No |
| pec [Brother PEC embroidery format] | PEC | No |
| pem [PEM-encoded key materials] | PEM | Yes |
| persuasion [Adobe Persuasion] | No | |
| pes [Brother PEC embroidery format] | PES | No |
| pfa [Adobe Printer Font ASCII format] | PFA | No |
| pfb [PostScript Type 1 Font] | PFB | No |
| pfm [Portable FloatMap (PFM) image] | PFM | No |
| pfr [Portable Font Resource font format] | PFR | No |
| pfs [PFS Professional Write document] | PFS | No |
| pfs-plan [PFS Professional Plan spreadsheet] | No | |
| pfy [Rational Purify data file] | PFY | No |
| pgm-ascii [Portable Greymap Utilities ASCII format (PGM)] | PGM, PNM | No |
| pgm-binary [Portable Greymap Utilities BINARY format (PGM)] | PGM, PNM | No |
| pgml [Precision Graphics Markup Language] | PGML | No |
| pgn [Portable Game Notation chess format] | PGN | No |
| pgp [PGP protected data] | No | |
| GPG, PGP | Yes | |
| pgp-privkey [PGP secret key] | SKR | No |
| pgp-pubkey [PGP public key] | PKR, GPG | No |
| pgp-pubkey-ascii [ASCII-armored PGP public key] | PGP | No |
| pgp-signature [PGP signature certificate] | SIG | No |
| pgs [PageStream document] | PGS | No |
| pgx [JPEG 2000 PGX Verification Model image] | PGX | No |
| philipsscript [Philips Script] | No | |
| php [PHP Source Code3] | PHP | Yes |
| picolisp [PicoLisp Source Code4] | No | |
| picturegear-pocket [PictureGear Pocket image] | PRC | No |
| pif [Program Information File] | PIF | No |
| pike [Pike Source Code4] | PIKE | No |
| pim [PIM Archiver format] | PIM | No |
| pix [PCI Geomatics Database File (PCIDSK)] | PIX | No |
| pkg [Apple Newton executable/installer/file] | PKG | No |
| pkpass [Apple PKPASS document] | PKPASS, PKPASSES | No |
| pl [Perl Source Code] | PL | Yes |
| plan [Calligra Plan document] | PLAN | No |
| planperfect [PlanPerfect] | No | |
| plist [Apple XML Property List format] | PLIST | No |
| plist-binary [Apple Binary Property List format] | PLIST | No |
| plpgsql [PLpgSQL Source Code4] | PLSQL | No |
| pls [Pronunciation Lexicon Specification (PLS) XML format] | PLS | No |
| plsql [PLSQL Source Code3] | No | |
| plucker [Plucker eBook] | PDB | No |
| ply-ascii [Polygon File Format (PLY) ASCII format] | PLY | No |
| ply-binary [Polygon File Format (PLY) binary format] | PLY | No |
| pmd [Polyphonic Ringtone PMD audio] | PMD | No |
| pmf [Sony PlayStation Portable Media Format] | PMF | No |
| pml [Microsoft Process Monitor (PML) log] | PML | No |
| pmlz [Palm Markup Language (PMLZ) eBook] | PMLZ | No |
| pmp [PMP video] | PMP | No |
| png [Portable Network Graphics] | PNG | Yes |
| poly-texture-map [Polynomial Texture Map (PTM)] | PTM | No |
| poly-tracker-audio [Poly Tracker audio] | PTM | No |
| pony [Pony Source Code4] | PONY | No |
| portfolio-pdf [Portfolio PDF File] | No | |
| postgresql-map [PostgreSQL mapped relation file (pg_filenode.map)] | MAP | No |
| powershell [PowerShell Source Code] | PS1 | Yes |
| powerworld-binary [PowerWorld Binary (PWB) file] | PWB | No |
| ppd [Adobe PostScript Printer Description file] | PPD | No |
| ppj [Adobe Premiere project format] | PPJ | No |
| ppm-ascii [Portable Pixmap Utilities ASCII format (PPM)] | PPM, PNM | No |
| ppm-binary [Portable Pixmap Utilities BINARY format (PPM)] | PPM, PNM | No |
| ppp [Serif PagePlus format] | PPP | No |
| ppr [Cognos PowerPlay up to version 7 (PPR) format] | PPR | No |
| ppt [Microsoft PowerPoint PPT] | PPT | Yes |
| pptx [Microsoft PowerPoint 2007 PPTX] | PPTM, POTM, PPSM, PPAM | Yes |
| pr4 [Harvard Graphics] | PR4 | No |
| prel [Adobe Premiere Elements/Pro project] | PRPROJ, PREL | No |
| primeword [PRIMEWORD] | No | |
| privkey [Private key file] | PEM | Yes |
| processing [Processing Source Code4] | PDE | No |
| prolog [Prolog Source Code3] | PRO, PROLOG | No |
| prt [Unigraphics (UG) NX CAD Format] | PRT | No |
| prtl [Adobe Premiere Pro title document] | PRTL | No |
| ps [PostScript] | PS | No |
| psd [Adobe Photoshop Document] | PSD, PSB | No |
| psf [PC Screen Font format] | PSF | No |
| psion-3-sheet [Psion 3 Sheet spreadsheet] | SPR | No |
| psion-3-word [Psion 3 Word document] | WRD | No |
| psion-aif [Psion EPOC Application Information File (AIF)] | AIF | No |
| psion-app [Psion EPOC Application] | APP | No |
| psion-db [Psion EPOC Database] | No | |
| psion-epoc-sheet [Psion EPOC Sheet spreadsheet] | PSISHEET | No |
| psion-epoc-word [Psion EPOC Word document] | PSI, PSITEXT | No |
| psion-exe [Psion 3 IMG/APP executable] | IMG, APP | No |
| psion-mbm [Psion EPOC Multi-Bitmap (MBM) image] | MBM | No |
| psion-obj [Psion 3 OPL Object File] | OPA, OPO | No |
| psion-opl [Psion EPOC OPL object module] | No | |
| psion-opl-app [Psion EPOC OPL Application] | APP | No |
| psion-opx-app [Psion EPOC OPX Application] | OPX | No |
| psion-pic [Psion 3 PIC bitmap] | PIC | No |
| psion-record [Psion EPOC Record audio] | No | |
| psion-sketch [Psion EPOC Sketch image] | No | |
| psion-sound [Psion 3 Sound file] | WVE | No |
| psion-texted [Psion EPOC TextEd file] | No | |
| pspimage [PaintShop Pro image] | PSP, PSPIMAGE | No |
| pst [Microsoft Outlook Personal Folders File (.pst)] | PST | No |
| psv [Pipe-separated values document] | PSV | No |
| ptc-creo [PTC Creo/Parametric/Elements/ProEngineer/Wildfire CAD Format] | ASM, DRW, PRT, FRM | No |
| ptf [Multiplus (AES)] | PTF | No |
| ptl [Adobe Premiere title document] | PTL | No |
| ptr [OS/2 pointer] | PTR | No |
| puf [Puffer encrypted archive] | PUF | No |
| pup [Puppy Linux DotPup installer package] | PUP | No |
| puppet [Puppet Source Code3] | PP | No |
| purebasic [PureBasic Source Code4] | PB | No |
| pva [TechnoTrend PVA video] | PVA | No |
| pvf [Portable Voice Format audio] | PVF | No |
| pwa [Moon Software Password Agent document] | PWA | No |
| pwd [PowerWorld Display (PWD) file] | PWD | No |
| py [Python Source Code] | PY | Yes |
| pyc [Python compiled bytecode] | PYC | No |
| python-pickle [Python Pickle file] | PICKLE, PKL, P | No |
| qcow [QEMU Copy On Write] | QCOW | No |
| qcp [Qualcomm QCP audio] | QCP | No |
| qdf [Quicken data file] | QDF | No |
| qif [Quicken Interchange Format (QIF)] | QIF | No |
| qioo-jar [QiOO mobile eBook] | JAR | No |
| qm [Qt binary translation file format] | QM | No |
| qmake [QMake File4] | No | |
| qmlc [QML Cached document] | QMLC | No |
| qoi [Quite OK Image (QOI)] | QOI | No |
| qpf2 [Qt Prerendered Font format] | QPF2 | No |
| qtif [QuickTime (QTIF) image] | QTIF, QIF, QTI | No |
| quadratron-q1-v1 [Q-One V1.93J] | Q1, QX | No |
| quadratron-q1-v2 [Q-One V2.0] | Q1, QX | No |
| quark-xpress [Quark Xpress MAC] | No | |
| quickbooks-backup [QuickBooks Backup file (binary format)] | QBB | No |
| quickbooks-backup-ole [QuickBooks Backup file (OLE format)] | QBB | No |
| quickbooks-company [QuickBooks Company file] | QBA, QBW | No |
| quickbooks-portable [QuickBooks Portable document] | QBM, QBX | No |
| quickdraw-3d-metafile [QuickDraw 3D Metafile] | No | |
| quickpoint [PalmOS Quickpoint document] | PRC | No |
| quicksheet [PalmOS Quicksheet document] | PRC | No |
| quickword [PalmOS Quickword document] | PRC | No |
| qxb [QuarkXPress Intel format] | QXB | No |
| r [R Source Code] | R | Yes |
| r3d [REDCode video format] | R3D | No |
| racket [Racket Source Code4] | No | |
| radiance-rgbe-image [Radiance RGBE (HDR) image] | HDR, PIC, RGBE, XYZE | No |
| raf [FujiFilm RAF image] | RAF | No |
| ragel [Ragel Source Code4] | No | |
| ragtime [RagTime document] | RAG, RTD | No |
| raml [RAML Source Code4] | RAML | No |
| rar [RAR or RAR5 archive format] | RAR, REV, R00, R01 | Yes |
| rascal [Rascal Source Code4] | RSC | No |
| raw [Raw image file] | RAW, RWL | Yes |
| RW2 | No | |
| rb [Rocket eBook] | RB | No |
| rbf [R:Base database (v2-v4)] | RBF | No |
| rdf [RDF/XML format] | RDF | No |
| rdoc [RDoc Source Code4] | RDOC | No |
| real [Adobe Aero REAL file] | REAL | No |
| reallegal-etranscript [RealLegal E-Transcript File] | PTX | No |
| reaper-fmv [Reaper Video] | FMV | No |
| rebol [Rebol Source Code4] | REB, REBOL | No |
| red [Red Source Code4] | RED | No |
| reg [Microsoft Windows Registry format] | reg | No |
| renderscript [RenderScript Source Code4] | RS | No |
| renpy [Ren'Py Source Code4] | RPY | No |
| res [Microsoft Windows binary resource file] | RES | No |
| rexx [REXX Source Code4] | REXX | No |
| rh [Right Hemisphere thumbnail collection file] | $RH | No |
| rhm [Right Hemisphere Material file] | RH, RHM | No |
| rib [Pixar RenderMan Interface Bytestream file] | RIB | No |
| riff-dib [RIFF Device Independent Bitmap] | No | |
| riff-mmm [RIFF Multimedia Movie] | MMM | No |
| ring [Ring Source Code4] | RING | No |
| rka [RK Audio lossless compressed audio] | RKA | No |
| rle [Utah RLE image] | RLE | No |
| rli [RealWorld Paint layered image] | RLI | No |
| rm [RealMedia Video or Audio] | RM, RA | No |
| rmi [RIFF MIDI] | RMI | No |
| rms-protected [Rights Management Services (RMS)-protected format] | PFILE, PPDF, PJPG, PTXT | No |
| robotframework [RobotFramework Source Code4] | ROBOT | No |
| roq [RoQ video] | ROQ | No |
| ross-video [Ross video] | No | |
| rpl [Acorn RISC ARMovie video format] | RPL | No |
| rpm [RPM Package Manager file] | RPM | No |
| rpmsg [Microsoft Outlook Restricted Permission Message] | RPMSG | No |
| rpt [SAP Crystal Reports format] | RPT | No |
| rrd [RRDtool (Round Robin Database) data file] | RRD | No |
| rri [RealWorld Paint raster image] | RRI | No |
| rsd [Really Simple Discovery (RSD) XML format] | RSD | No |
| rso [Mindstorm RSO audio] | RSO | No |
| rss [RSS syndication XML format] | RSS | No |
| rst [reStructuredText Source Code4] | No | |
| rtc [Microsoft Office Live Meeting Connection] | RTC | No |
| rtf [Rich Text Format] | RTF | Yes |
| ruby [Ruby Source Code] | RB | Yes |
| rust [Rust Source Code3] | RS | No |
| rx2 [REX2 audio file] | RX2 | No |
| saltstack [SaltStack Source Code4] | SLS | No |
| sam [SAMNA Word] | SAM | No |
| sami [Synchronized Accessible Media Interchange (SAMI) subtitle document] | SMI, SAMI | No |
| samsung-stereo [Samsung stereoscopic stream] | No | |
| sanm [LucasArts Smush SANM animation] | SNM, ZNM | No |
| sap-vds [SAP 3d Visual Enterprise VDS document] | VDS | No |
| sar [SAP compression archive SAR format] | SAR | No |
| sas [SAS Source Code4] | SAS | No |
| sas7bdat [SAS7BDAT database storage format] | SAS7BDAT | No |
| sas-xport [SAS Transport File XPORT format] | XPT, XPORT | No |
| sav [SPSS Statistics Data File Format] | SAV | No |
| sbml [Systems Biology Markul Language (SBML) XML format] | SBML | No |
| scala [Scala Source Code3] | SC | No |
| scapple [Scapple mind map] | SCAP | No |
| scenarist-caption [Scenarist Closed Caption document] | SCC | No |
| scheme [Scheme Source Code4] | No | |
| scilab [Scilab Source Code4] | SCI | No |
| scitex-ct [Scitex Continuous Tone (CT) image] | CT, SCT | No |
| scm [Microsoft Publisher colour scheme] | SCM | No |
| scn [Softimage Scene SCN format] | SCN | No |
| scr [Statsoft Statistica Scrollsheet] | SCR | No |
| scribe-mss [Scribe markup language and word processing system] | MSS | No |
| sd2 [SAS 6 Data storage format] | SD2 | No |
| sda-video [SDA SD Memory Card video] | No | |
| sdf [Standard Delay Format (SDF)] | SDF | Yes |
| sdi [Microsoft System Deployment Image SDI format] | SDI | No |
| seclore [a Seclore-encrypted document whose format cannot be determined] | No | |
| sega-film [Sega FILM video format] | CPK, CAK | No |
| sequencefile [Apache Hadoop sequence file] | SEQUENCEFILE | No |
| sew [SEW embroidery format] | SEW | No |
| sf2 [SoundFont file] | sf2 | No |
| sfd [Spline Font Database (SFD) font] | SFD | No |
| sfv [EnVision Publisher font] | SFV | No |
| sgi [SGI RGB Image] | RGB | No |
| sgml [SGML] | SGML | No |
| sgy [SEG-Y Seismic Data format] | SGY, SEGY | No |
| sh [Shell Script3] | SH | Yes |
| shapefile [Shapefile] | SHP, SHX | No |
| shapefile-sbx [Shapefile binary spatial index format] | SBX, SBN | No |
| shar [SHAR shell archive] | SHAR | No |
| shg [MS Segmented Hypergraphics image] | SHG | No |
| shm [SQLite WAL-index (shm) file] | SHM | No |
| shn [Shorten audio file] | SHN | No |
| shs [Shell Scrap Object File] | SHS | No |
| shv [Viking SHV embroidery format] | SHV | No |
| sia [Nevercenter Silo 3D ASCII model] | SIA | No |
| sibelius [Sibelius musical score] | SIB | No |
| sid-audio [SID Audio format] | SID | No |
| sierra-audio [Sierra Entertainment audio file] | SOL | No |
| siff-video [Beam Software SIFF video file] | VB | No |
| silo-sib [Nevercenter Silo 3D binary model] | SIB | No |
| sis [Symbian installer format] | SIS | No |
| sitw [SecureIT encrypted file] | SITW | No |
| sitx [StuffIt X (SITX) archive format] | SITX | No |
| skd [AutoSketch image] | SKD | No |
| skp [Google SketchUp] | SKP | No |
| skype-dbb [Skype Log File] | DBB | No |
| sla [Scribus document] | SLA | No |
| slk [SYmbolic LinK (SYLK)] | SLK | No |
| sln [MS Visual Studio solution file] | SLN | No |
| smalltalk [Smalltalk Source Code3] | ST | No |
| smartcipher [SmartCipher encrypted file] | No | |
| smartdraw [SmartDraw document] | SDR, SDT | No |
| smartware-comm [SmartWare II] | No | |
| smartware-db [Informix SmartWare II database] | No | |
| smartware-doc [Informix SmartWare II word processor] | DOC, SMT | No |
| smartware-spreadsheet [Informix SmartWare II spreadsheet] | No | |
| smil [Synchonized Multimedia Integration Language (SMIL) XML format] | SMIL | No |
| smmx [SimpleMind mind map] | SMMX | No |
| smp [Novastorm Media audio file] | SMP | No |
| smush-animation [LucasArts Smush SAN Animation Format] | SAN, NUT | No |
| snag [Snagit Windows document] | SNAG | No |
| snagproj [Snagit Mac document] | SNAGPROJ | No |
| snagx [Snagit zip (SNAGX) document] | SNAGX | No |
| snb [Shanda Bambook eBook] | SNB | No |
| snoop-capture [Snoop Packet Capture file] | CAP, SNOOP | No |
| snt [Microsoft Windows Sticky Notes format] | SNT | No |
| so-autotext [Star Office 4,5 AutoText file] | BAU | No |
| so-chart [Star Office 4,5 Chart] | SDS | No |
| so-db [Star Office 4,5 Database] | SDB | No |
| so-drawing-xml [OpenDocument format (OpenOffice 1/StarOffice 6.7) Drawing XML] | SXD | No |
| sof [Serialized Object Format] | SOF | No |
| softimage-pic [Softimage PIC image] | PIC, SOFT | No |
| softlib [Softdisk Softlib compression format] | SLB | No |
| softmaker-pmd [SoftMaker PlanMaker PMD document] | PMD, PMV | No |
| softmaker-pmdx [SoftMaker PlanMaker PMDX document] | PMDX, PMVX | No |
| softmaker-prdx [SoftMaker Presentations PMDX document] | PRDX, PRVX | No |
| softmaker-tmd [SoftMaker TextMaker TMD document] | TMD, TMV | No |
| softmaker-tmdx [SoftMaker TextMaker TMDX document] | TMDX, TMVX | No |
| so-lib [Star Office 4,5 Library] | SBL | No |
| solidedge-asm [Solid Edge assembly] | ASM | Yes |
| solidedge-dft [Solid Edge draft] | DFT | No |
| solidedge-par [Solid Edge part] | PAR | No |
| solidedge-psm [Solid Edge sheet metal] | PSM | No |
| solidworks [SolidWorks Format Files (2015 onwards)] | SLDPRT, SLDDRW, SLDASM | Yes |
| solidworks-legacy [SolidWorks Format Files (before 2015)] | SLDASM, SLDPRT, SLDDRW, SLDDRT | No |
| solidworks-svpj [SolidWorks Visualize project] | SVPJ | No |
| so-math [Star Office 4,5 Math] | SMF | No |
| so-math-xml [OpenDocument format (OpenOffice 1/StarOffice 6,7) Math XML] | SXM | No |
| son [Beam Software SIFF audio file] | SON | No |
| sony-msv [Sony Compressed Audio (MSV/DVF)] | DVF, ICS, MSV | No |
| sony-psp-mp4 [Sony PSP MPEG-4] | MP4 | No |
| sony-xavc [Sony XAVC video] | No | |
| so-presentation [Star Office 4,5 Impress Presentation] | SDD, SDA | No |
| so-presentation-xml [OpenDocument format (OpenOffice 1/StarOffice 6,7) Presentation XML] | SXD, SXI | No |
| so-spreadsheet [Star Office 4,5 Calc Spreadsheet] | SDC | No |
| so-spreadsheet-xml [OpenDocument format (OpenOffice 1/StarOffice 6,7) Spreadsheet XML] | SXC, STC | No |
| so-writer [Star Office 4,5 Writer Text] | SDW, SGL, VOR | No |
| so-writer-master-xml [OpenDocument format (OpenOffice 1/StarOffice 6.7) Writer Master document XML] | SXG | No |
| so-writer-xml [OpenDocument format (OpenOffice 1/StarOffice 6,7) Text XML] | SXW | No |
| spaceclaim-rsdoc [SpaceClaim Engineer/DesignSpark Mechanical file] | RSDOC, SCDOC | No |
| sparql-query [SPARQL format4] | rq | No |
| spc [SNES SPC700 audio file] | SPC | No |
| speedo-font [Speedo Font format] | SPD | No |
| spj [Microsoft Image Composite Editor (ICE) Project] | SPJ | No |
| sql [SQL format4] | No | |
| sqlite [SQLite database format] | QHC | Yes |
| sqlpl [SQLPL Source Code4] | No | |
| sqm [Microsoft Windows Live Messenger/Mail log file] | SQM | No |
| squash [Squash (&FCA) compressed data] | No | |
| squashfs [SquashFS file system image] | SQUASHFS | No |
| squirrel [Squirrel Source Code4] | NUT | No |
| sqx [SQX archive] | SQX | No |
| srgs-xml [Speech Recognition Grammar Specification (SRGS) XML format] | SRGS, GRXML | No |
| srl [Sereal data serialization format] | SRL | No |
| srs [Microsoft Outlook 2002 Send-Receive Settings] | SRS | No |
| srt [SubRip Text (STT) subtitles document] | SRT | No |
| sru [Search/Retrieve via URL (SRU) XML format] | SRU | No |
| srx [SPARQL Query Results XML format] | SRX | No |
| ssf [Enable Spreadsheet] | SSF | No |
| ssml [Speech Synthesis Markup Language (SSML) XML format] | SSML | No |
| st3 [Creative Labs Star 3 audio] | ST3 | No |
| sta [Statsoft Statistica Spreadsheet] | STA | No |
| stan [Stan Source Code4] | STAN | No |
| standard-ml [Standard ML Source Code3] | ML | No |
| stata [Stata Source Code4] | No | |
| stata-dta-v104-115 [Stata Data Format (versions 104-115)] | DTA | No |
| stata-dta-v117-118 [Stata Data Format (versions 117-118)] | DTA | No |
| ste [FTP Session Data] | STE | No |
| stg [Statsoft Statistica Graph File] | STG | No |
| stl [3D Systems Stereolithography] | stl | Yes |
| stp [ISO 10303-21 STEP format] | STP, STEP, STPNC | Yes |
| stream [Shockwave Stream audio-video file] | STREAM | No |
| stufflt-hqx [StuffIt - MAC] | HQX | No |
| stylus [Stylus Source Code4] | STYL | No |
| substation-alpha-ssa [SubStation Alpha subtitle document] | SSA, ASS | No |
| subversion-dump [Subversion Dump format] | No | |
| sun-pex [SUN PEX Binary Archive] | No | |
| sun-raster [Sun Raster image] | RAS,RS, SUN | No |
| sun-vfont [SUN vfont Definition] | No | |
| suo [Microsoft Visual Studio solution user options (suo) file] | SUO | No |
| supercollider [SuperCollider Source Code4] | SC | No |
| svf [Simple Vector Format (SVF)] | SVF | No |
| svg [Scalable Vector Graphics image] | SVG | No |
| svm [OpenOffice StarView MetaFile format] | SVM | No |
| sw-anm [Savage Warriors ANM animation] | ANM | No |
| swift [Swift Source Code3] | SWIFT | No |
| swp [VIM editor swap file] | SWP | No |
| sy3 [Harvard Graphics Symbol File (v3)] | SY3 | No |
| sym [Harvard Graphics Symbol File (v2)] | SYM | No |
| symantec-pgp [Symantec PGP NetShare encrypted file] | No | |
| symantec-qa [Symantec Q&A] | No | |
| JW | No | |
| symantec-qa-db [Symantec Q&A Database] | DTF | No |
| syncml-xml [Synchronization Markup Language (SyncML) XML format] | XML | No |
| sys [MSDOS Device Driver] | SYS | No |
| systemverilog-src [SystemVerilog Source Code4] | SV | Yes |
| sz [Snappy Framed compression format] | SZ | No |
| sza [ISD HiCAD Drawing] | SZA | No |
| tableau-preferences [Tableau Preferences format] | TPS | No |
| tak [TAK audio file] | TAK | No |
| tar [Tape Archive] | TAR | Yes |
| tcl [Tool Command Language (Tcl) Source Code3] | TM | No |
| tcr-ebook [TCR/ZVR (Text Compression for Reader) eBook format] | TCR, ZVR | No |
| tdd [IFF TDDD and Imagine Object animation format] | TDD | No |
| tde [Tableau Extract format] | TDE | No |
| tds [Tableau Data Source format] | TDS | No |
| tdsx [Tableau Packaged Data Source format] | TDSX | No |
| tealdoc [TealDoc PalmOS eBook] | PDB | No |
| tealmeal [TealMeal PalmOS database] | PDB | No |
| tealpaint [TealPaint PalmOS eBook] | PDB | No |
| tei [Text Encoding Initiative (TEI) XML format] | TEI | No |
| ter [Terragen terrain file] | TER | No |
| tex [TeX Typesetting File3] | tex | No |
| tfm [TeX font metric file] | TFM | No |
| tga [Truevision Targa image] | TGA | No |
| tgc [Terragen clip file] | TGC | No |
| tgd [Terragen project file] | TGD | No |
| tgo [Terragen object geometry file] | TGO | No |
| tgw [Terragen world file] | TGW | No |
| thp [GameCube THP Video] | THP | No |
| thumbs-db [Microsoft Windows thumbs.db format] | DB | Yes |
| ti-ccxml [Texas Instruments CCXML target configuration XML format] | CCXML | No |
| tif [Tagged Image File Format] | TIF, TIFF | Yes |
| tiled-tmx [Tiled TMX map format] | TMX | No |
| time-shift-video [Time Shift Video (TSV) format] | TSV | No |
| timeworks-dtp [Timeworks Publisher (Publish It) format] | DTP | No |
| tiny-stuff-image [Tiny Stuff image] | TNY, TN1, TN2, TN3.TN4.TN5.TN6 | No |
| tlb [Microsoft Component Object Model (COM) Type library] | TLB | No |
| tmr [TransMagic file] | TMR | No |
| tms [Tableau Map Source format] | TMS | No |
| tmx [Translation Memory eXchange] | TMX | No |
| tnef [Transport Neutral Encapsulation Format (TNEF)] | No | |
| tomeraider-pdb [TomeRaider PDB eBook] | TR2, TR3 | No |
| toppkg [TopSolid package] | TOPPKG | No |
| torrent [BitTorrent file format] | TORRENT | No |
| tr [TomeRaider eBook] | TR | No |
| trustdb [GPG trust database format] | GPG | No |
| trx [MS Visual Studio test results file] | TRX | No |
| ts [TypeScript Source Code3] | TS | Yes |
| tscproj [TechSmith JSON Project] | TSCPROJ | No |
| tsd [Time-stamped data format] | TSD | No |
| tsv [Tab-separated values (TSV) file] | TSV, TAB | No |
| tsx [Tiled TSX map format] | TSX | No |
| tta [True Audio format] | TTA | No |
| ttc [TrueType font collection format] | TTC | No |
| ttf [TrueType Font] | TTF | No |
| ttml [Timed Text Markup Language (TTML) document] | TTML | No |
| turbocad-drawing [TurboCAD drawing] | TCW, TCT | No |
| turing [Turing Source Code4] | T | No |
| turtle [Turtle Source Code4] | TTL | No |
| tw [Targon Word] | TW | No |
| twb [Tableau Workbook format] | TWB | No |
| twbx [Tableau Packaged Workbook format] | TWBX | No |
| twdx [MindMapper mind map] | TWDX | No |
| txd [Renderware Texture Dictionary (TXD) file] | TXD | No |
| txf [TeXFont] | TXF | No |
| txl [TXL Source Code4] | TXL | No |
| txt [Plain Text file] | TXT | Yes |
| ty [TiVo video] | TY+ | No |
| u3d [Universal 3D file format] | U3D | No |
| uc2 [UltraCompressor II archive] | UC2 | No |
| udl [Microsoft Universal Data Link file] | UDL | No |
| ufdr [Cellebrite Reader file] | UFDR | No |
| uha [UHARC compressed file] | UHA | No |
| ultracalc [UltraCalc spreadsheet] | No | |
| uni [Unicode text file] | UNI | No |
| uniform-presentation [Uniform Office Format presentation] | UOF, UOP | No |
| uniform-presentation-zip [Uniform Office Format presentation, zip format] | UOF, UOP | No |
| uniform-spreadsheet [Uniform Office Format spreadsheet] | UOF, UOS | No |
| uniform-spreadsheet-zip [Uniform Office Format spreadsheet, zip format] | UOF, UOS | No |
| uniform-text [Uniform Office Format word processing document] | UOF, UOT | No |
| uniform-text-zip [Uniform Office Format word processing document, zip format] | UOF, UOT | No |
| uniform-uof [Uniform Office Format document] | UOF | No |
| uniform-uof-zip [Uniform Office Format document, zip format] | UOF | No |
| uniplex-ucalc [Uniplex Ucalc] | SS | No |
| unix-exe [UNIX executable] | No | |
| unix-obj [UNIX object module] | No | |
| unix-shadow [Unix /etc/shadow password file] | No | |
| up [Uniplex word processor] | UP | No |
| urweb [UrWeb Source Code4] | UR, URS | No |
| usda [Pixar Universal Scene Description (ascii) file] | USDA | No |
| usdz [Pixar Universal Scene Description (zipped) file] | USDZ | No |
| usenet [USENET] | No | |
| utk [MicroTalk/UTalk audio] | UTK | No |
| uue [UU-encoded text] | UUE | No |
| v [ECAT medical PET image] | V | No |
| variant-call [Variant Call Format (ASCII) file] | VCF | No |
| vb [Visual Basic Source Code4] | VB | No |
| vc6 [Ashlar-Vellum part] | VC6 | No |
| vcarve [Vectric V-Carve document] | CRV, CRVT, CRV3D | No |
| vcproj [MS Visual C++ project] | VCPROJ | No |
| vda [VDA-FS file] | VDA | No |
| vdf [Micro Focus Voltage VSF encrypted file] | VDF | No |
| vdi [VirtualBox Disk Image] | VDI | No |
| vdx [Microsoft Visio 2003 XML] | VDX | No |
| vector-ascii [Vector CAD ASCII ASC format] | ASC | No |
| verilog [Verilog Source Code] | V | Yes |
| vf [TeX virtual font] | VF | No |
| vflash-ptx [VTech V.Flash VTX image] | PTX | No |
| vgz [VGZ video] | VGZ | No |
| vhd [Microsoft Virtual Hard Disk format] | VHD | No |
| vi [National Instruments LabVIEW file format] | VI | No |
| vicar-image [VICAR image format] | IMG, MAP, VIC, VICAR | No |
| viff [Khoros Visualization Image File Format (VIFF)] | XV, VIF, VIFF | No |
| vim-script [Vim script File4] | VIM | No |
| vip [Husqvarna Viking-Pfaff VIP embroidery format] | VIP | No |
| vistaword [Vistaword] | DV | No |
| viv [Vivo audio-video format] | VIV | No |
| vmd [Sierra Video and Music Data format] | VMD | No |
| vmdk [VMware Virtual Disk Format 5.0] | VMDK | No |
| voc [Creative Voice (VOC)] | VOC | No |
| vp3 [VP3 embroidery format] | VP3 | No |
| vp5 [On2 VP5 video] | VP5 | No |
| vp6 [On2 VP6 video] | VP6 | No |
| vp8 [VP8 Video (IVF container)] | VP8 | No |
| vqa [Westwood Studios Vector Quantized Animation video file] | VQA | No |
| vqf [NTT TwinVQ audio format] | VQF | No |
| vsd [Microsoft Visio (up to version 11)] | VSD | Yes |
| vsdm [Microsoft Visio 2013 macro] | VSDM, VSTM, VSSM | Yes |
| vsdx [Microsoft Visio 2013] | VSDX, VSTX, VSSX | Yes |
| vsf [VICE (Versatile Commodore Emulator) format] | VSF | No |
| vssm [MS Visio 2013 stencil Macro format] | VSSM | No |
| vssx [MS Visio 2013 stencil format] | VSSX | No |
| vstm [MS Visio 2013 template Macro format] | VSTM | No |
| vst-preset [Virtual Studio Technology (VST) preset format] | FXP | No |
| vstx [MS Visio 2013 template format] | VSTX | No |
| vtk-ascii [Visualization Toolkit VTK ASCII format] | VTK | No |
| vtk-binary [Visualization Toolkit VTK Binary format] | VTK | No |
| vtu [Visualization Toolkit VTK XML format] | VTU | No |
| vue [Visual Understanding Environment (VUE) mind map] | VUE, VPK | No |
| vw4 [Volkswriter word processor] | VW4 | No |
| vxml [VoiceXML (VXML) XML format] | VXML | No |
| vym [VYM Mind Map Pro document] | VYM | No |
| w64 [Sony Wave64 format] | W64 | No |
| wab [Microsoft Outlook address file] | WAB | No |
| wacz [Web Archive Collection Zipped (WACZ)] | WACZ | No |
| wad [Doom IWAD/PWAD format] | WAD | No |
| wal [SQLite Write-Ahead Log file] | WAL | No |
| wang-gdl [WANG Office GDL Header] | No | |
| wang-iwp-doc [Wang IWP for PC] | DOC | No |
| war [Java WAR file format] | WAR | No |
| warc [Web ARChive] | WARC | No |
| wasm [WebAssembly (WASM) binary-code] | WASM | No |
| wav [Microsoft Wave audio] | WAV | No |
| wavefront-obj [Wavefront OBJ geometry definition file] | OBJ | No |
| wax [Windows Audio playlist format] | WAX | No |
| wbmp [Wireless Bitmap image (WBMP)] | WBMP | No |
| wdm [Microsoft Visual InterDev web project items file] | WDM | No |
| webassembly [WebAssembly Source Code4] | WAT | No |
| webidl [WebIDL Source Code4] | WEBIDL | No |
| webm [WebM video file] | WEBM | No |
| webp [WebP image] | WEBP | No |
| wf [WANG WPS Word Processing System] | WF | No |
| whl [Python Wheel/WHL package] | WHL | No |
| wim [Microsoft Windows Imaging Format WIM] | WIM | No |
| winamp-avs [Winamp AVS (Advanced Visualization Studio) plug-in file] | AVS | No |
| win-cpp-obj-storage [Windows C++ Object Storage] | No | |
| win-cursor [Windows Cursor] | CUR | No |
| win-group-grp [Windows Group] | GRP | No |
| win-pal [Windows Palette] | PAL | No |
| wkz [Wingz spreadsheet] | WKZ | No |
| wma [Windows Media Audio Format (WMA)] | WMA | No |
| wmf [Windows Metafile] | WMF | No |
| wml [Wireless Markup Language] | WML | No |
| wmv [Windows Media Video Format (WMV)] | WMV | No |
| woff [Web Open Font Format] | WOFF, WOFF2 | No |
| wolfram-cdf [Wolfram Mathematica Computable Document Format] | CDF | No |
| word-connection [Word Connection] | CN | No |
| wordera [WordERA] | DC, GL, FR | No |
| wordperfect-aux [WordPerfect Auxiliary File] | WPW | No |
| wordperfect-cfg [WordPerfect Configuration File] | PFX | No |
| wordperfect-dict [WordPerfect Dictionary] | SPW, LEX | No |
| wordperfect-driver [WordPerfect Driver] | IRS, VRS | No |
| wordperfect-evy [WordPerfect Envoy] | EVY | No |
| wordperfect-graphics-v1 [WordPerfect Graphics version 1] | WPG, QPG | No |
| wordperfect-graphics-v2 [WordPerfect Graphics version 2 and higher] | WPG, QPG | No |
| wordperfect-hyphenation [WordPerfect Hyphenation Dictionary] | HYC | No |
| wordperfect-mac [WordPerfect MAC] | No | |
| wordperfect-macro [WordPerfect Macro] | MRS | No |
| wordperfect-misc [WordPerfect Miscellaneous File] | No | |
| wordperfect-resource [WordPerfect Resource File] | WWK, PRS | No |
| wordperfect-thesaurus [WordPerfect Thesaurus] | No | |
| wordperfect-v4 [WordPerfect version 4] | WP, WP4 | No |
| wordperfect-v5 [WordPerfect version 5] | WOP, DOC | No |
| wordperfect-v6 [WordPerfect version 6 and higher] | WPD | No |
| wordperfect-vax [WordPerfect VAX] | No | |
| wordsmith [PalmOS Wordsmith document] | No | |
| wordstar [WordStar] | WS, WSD | No |
| wpf [Enable Word Processing] | WPF | No |
| wpl [WPS-PLUS] | WPL | No |
| wps-presentation [Kingsoft WPS Office Presentation] | DPS, PPT | No |
| wps-spreadsheet [Kingsoft WPS Office Spreadsheet] | ET, XLS | No |
| wps-writer [Kingsoft WPS Office Writer] | WPS, DOC | No |
| wpw [Novell PerfectWorks document] | WPW | No |
| wrf [Webex local WRF recordings] | WRF | No |
| wri [Microsoft Windows Write] | WRI | No |
| writenow [WriteNow MAC] | No | |
| wrl [VRML] | WRL | No |
| ws2 [WordStar 2000] | WS2 | No |
| wsd [WordStar for Windows file] | WSD | No |
| wsf [Microsoft Windows Script File (WSF)] | WSF | No |
| wsq [Wavelet Scalar Quantization (WSQ) fingerprint image] | WSQ | No |
| wt [WANG WITA] | WT | No |
| wtv [Windows Television DVR format] | WTV | No |
| wv [Conifer Wavpack format] | WV | No |
| wxp-v1-4 [Symbol Dynamics EXP v1-4 document] | WXP | No |
| wxp-v5 [Symbol Dynamics EXP v5+ document] | WXP | No |
| x [Microsoft DirectX object] | X | No |
| x10 [X10 Source Code4] | X10 | No |
| x12-edi [X12-encoded EDI document] | EDI | No |
| x3d [Extensible 3d Graphics (X3D) XML format] | X3D | No |
| xa [Maxis XA audio file] | XA | No |
| xap [Microsoft Silverlight application (XAP) format] | XAP | No |
| xapk [Android XAPK installer] | XAPK | No |
| xar [Extensible Archive (XAR) format] | No | |
| xara-xar [Xara X Xar image format] | XAR | No |
| xb [XBin image] | XB | No |
| xbap [XAML Browser Application (XBAP) format] | XBAP | No |
| xbase [xBase Source Code4] | No | |
| xbe [Microsoft Xbox executable] | XBE | No |
| xbm [X-Window X Bitmap format (XBM)] | XBM | No |
| xbrl [Extensible Business Reporting Language (XBRL)] | XBRL | No |
| xbv [XBV video] | XBV | No |
| xcbf [XML Common Biometric Format] | XML | No |
| xcf [GIMP XCF image] | XCF | No |
| xdf [Extensible Data Format (XDF) XML format] | XDF | No |
| xdp [Adobe XML Data Package format] | XDP | No |
| xdw [DocuWorks Format] | XDW | No |
| xerox-860-comm [Xerox 860] | No | |
| xerox-writer [Xerox Writer] | No | |
| xfdf [PDF XML Forms Data Format] | XFDF | No |
| xfdl [Extensible Forms Description Language] | XFDL, XFD | No |
| xhtml [XHTML] | XML, XHTML, XHT | No |
| xi [eXtended Instrument generic audio tracker] | XI | No |
| xilinx-vds [Xilinx Vivado Design Suite file] | VDS | No |
| xiph-ogg-vorbis [Xiph Ogg Vorbis format] | OGG | No |
| xlc [Microsoft Excel (up to version 5) chart] | XLC | No |
| xlf [XML Localization Interchange File Format (XLIFF)] | XLF | No |
| xlm [Microsoft Excel (up to version 5) macro] | XLM | No |
| xls [Microsoft Excel XLS] | XLS, XLR | Yes |
| xlsb [Microsoft Excel Binary 2007] | XLSB | Yes |
| xls-html [Microsoft Excel HTML format] | XLS, HTM | No |
| xlsx [Microsoft Excel 2007 XLSX] | XLSM, XLTM, XLAM, XLSX, XLTX | Yes |
| xls-xml [Microsoft Excel 2003 XML] | XML | No |
| xlz [XML Localization Interchange File Format compressed (XLIFF)] | XLZ | No |
| xmcd [Mathcad XMCD document] | XMCD | No |
| xmind [XMind document] | XMIND | No |
| xml [XML] | XML | Yes |
| xmmap [MindManager XML map] | XMMAP | No |
| xmv [Microsoft Xbox XMV video] | XMV | No |
| xnb [Microsoft XNA Compiled Format] | XNB | No |
| xnk [Microsoft Outlook or Exchange folder shortcut] | XNK | No |
| xojo [Xojo Source Code4] | No | |
| xpi [XPInstall Cross-Platform Installer Module (XPI) format] | XPI | No |
| xpm [X-Window X Pixmap format (XPM)] | XPM | No |
| xps [Microsoft Open XML Paper Specification (XPS/OXPS)] | XPS, OXPS | Yes |
| xpt [XPConnect Typelib Format] | XPT | No |
| xquery [XQuery Source Code4] | XQM | No |
| xslt [Extensible Stylesheet Language Transformations (XSLT) format] | XSL, XSLT | No |
| xspf [XML Shareable Playlist Format (XSPF)] | XSPF | No |
| xtend [Xtend Source Code4] | XTEND | No |
| xul [Mozilla XML User Interface Language (XUL) XML format] | XUL | No |
| xv2 [Lattice 3d XVL file] | XV2 | No |
| xwd [X Window Dump image] | XWD | No |
| xxe [xxencoded text] | XXE | No |
| xxx [Singer XXX embroidery image] | XXX | No |
| xy4 [XYWrite / Nota Bene] | XY4 | No |
| xz [XZ archive format] | XZ | No |
| yafa [Wildfire YAFA animation] | YAFA | No |
| yaml [YAML File3] | YML,YAML | Yes |
| yang [YANG Source Code4] | YANG | No |
| ychat [Yahoo! Messenger chat log] | YCHAT | No |
| yim-dat [Yahoo! Instant Messenger History] | DAT | No |
| yin [YIN XML format] | YIN | No |
| yop [Psygnosis YOP video] | YOP | No |
| yozo-office [Yozosoft Yozo Office file] | EIO, EIT | No |
| z [InstallShield Z archive format] | Z | No |
| zbr [Zoner Zebra Metafile image] | ZBR | No |
| zcompressed [UNIX Compress archive] | Z | No |
| zephir [Zephir Source Code4] | ZEP | No |
| zim [ZIM compressed archive] | ZIM, ZIMAA | No |
| zip [ZIP Archive] | ZIP, ZIPX | No |
| zipvfs [ZIPVFS SQLite compressed read/write database] | SQLITE | Yes |
| zoner-bmi [Zoner BMI image] | BMI | No |
| zoner-draw [Zoner Draw / Zoner Callisto Metafile (ZMF) version 4+] | ZMF | No |
| zoner-draw-ole [Zoner Draw / Zoner Callisto Metafile (ZMF) version 2-3] | ZMF | No |
| zoo [Zoo Compressed Archive Format] | ZOO | No |
| zpaq [ZPAQ compressed archive] | ZPAQ | No |
| zpk [ZPack archive] | ZPK | No |
| zpr [ZBrush ZProject (ZPR) format] | ZPR | No |
| zps [Zoner Photo Studio document] | ZPS | No |
| zstd [Zstandard compression format] | ZSTD | No |
| ztl [ZBrush ZTtool (ZTL) format] | ZTL | No |
| ztxt-ebook [zTXT eBook] | PDB | No |
| zxp [Adobe Zip Format Extension Package (ZXP)] | ZXP | No |