经常需要查找文件的MIME类型添加到IIS服务器中，索性找全了，一次性添加进去。
| Name | MIME Type / Internet Media Type | File Extension |
|---|---|---|
| 3D Crossword Plugin | application/vnd.hzn-3d-crossword | .x3d |
| 3GP | video/3gpp | .3gp |
| 3GP2 | video/3gpp2 | .3g2 |
| 3GPP MSEQ File | application/vnd.mseq | .mseq |
| 3M Post It Notes | application/vnd.3m.post-it-notes | .pwn |
| 3rd Generation Partnership Project – Pic Large | application/vnd.3gpp.pic-bw-large | .plb |
| 3rd Generation Partnership Project – Pic Small | application/vnd.3gpp.pic-bw-small | .psb |
| 3rd Generation Partnership Project – Pic Var | application/vnd.3gpp.pic-bw-var | .pvb |
| 3rd Generation Partnership Project – Transaction Capabilities Application Part | application/vnd.3gpp2.tcap | .tcap |
| 7-Zip | application/x-7z-compressed | .7z |
| AbiWord | application/x-abiword | .abw |
| Ace Archive | application/x-ace-compressed | .ace |
| Active Content Compression | application/vnd.americandynamics.acc | .acc |
| ACU Cobol | application/vnd.acucobol | .acu |
| ACU Cobol | application/vnd.acucorp | .atc |
| Adaptive differential pulse-code modulation | audio/adpcm | .adp |
| Adobe (Macropedia) Authorware – Binary File | application/x-authorware-bin | .aab |
| Adobe (Macropedia) Authorware – Map | application/x-authorware-map | .aam |
| Adobe (Macropedia) Authorware – Segment File | application/x-authorware-seg | .aas |
| Adobe AIR Application | application/vnd.adobe.air-application-installer-package+zip | .air |
| Adobe Flash | application/x-shockwave-flash | .swf |
| Adobe Flex Project | application/vnd.adobe.fxp | .fxp |
| Adobe Portable Document Format | application/pdf | |
| Adobe PostScript Printer Description File Format | application/vnd.cups-ppd | .ppd |
| Adobe Shockwave Player | application/x-director | .dir |
| Adobe XML Data Package | application/vnd.adobe.xdp+xml | .xdp |
| Adobe XML Forms Data Format | application/vnd.adobe.xfdf | .xfdf |
| Advanced Audio Coding (AAC) | audio/x-aac | .aac |
| Ahead AIR Application | application/vnd.ahead.space | .ahead |
| AirZip FileSECURE | application/vnd.airzip.filesecure.azf | .azf |
| AirZip FileSECURE | application/vnd.airzip.filesecure.azs | .azs |
| Amazon Kindle eBook format | application/vnd.amazon.ebook | .azw |
| AmigaDE | application/vnd.amiga.ami | .ami |
| Andrew Toolkit | application/andrew-inset | N/A |
| Android Package Archive | application/vnd.android.package-archive | .apk |
| ANSER-WEB Terminal Client – Certificate Issue | application/vnd.anser-web-certificate-issue-initiation | .cii |
| ANSER-WEB Terminal Client – Web Funds Transfer | application/vnd.anser-web-funds-transfer-initiation | .fti |
| Antix Game Player | application/vnd.antix.game-component | .atx |
| Apple Disk Image | application/x-apple-diskimage | .dmg |
| Apple Installer Package | application/vnd.apple.installer+xml | .mpkg |
| Applixware | application/applixware | .aw |
| Archipelago Lesson Player | application/vnd.hhe.lesson-player | .les |
| Arista Networks Software Image | application/vnd.aristanetworks.swi | .swi |
| Assembler Source File | text/x-asm | .s |
| Atom Publishing Protocol | application/atomcat+xml | .atomcat |
| Atom Publishing Protocol Service Document | application/atomsvc+xml | .atomsvc |
| Atom Syndication Format | application/atom+xml | .atom, .xml |
| Attribute Certificate | application/pkix-attr-cert | .ac |
| Audio Interchange File Format | audio/x-aiff | .aif |
| Audio Video Interleave (AVI) | video/x-msvideo | .avi |
| Audiograph | application/vnd.audiograph | .aep |
| AutoCAD DXF | image/vnd.dxf | .dxf |
| Autodesk Design Web Format (DWF) | model/vnd.dwf | .dwf |
| BAS Partitur Format | text/plain-bas | .par |
| Binary CPIO Archive | application/x-bcpio | .bcpio |
| Binary Data | application/octet-stream | .bin |
| Bitmap Image File | image/bmp | .bmp |
| BitTorrent | application/x-bittorrent | .torrent |
| Blackberry COD File | application/vnd.rim.cod | .cod |
| Blueice Research Multipass | application/vnd.blueice.multipass | .mpm |
| BMI Drawing Data Interchange | application/vnd.bmi | .bmi |
| Bourne Shell Script | application/x-sh | .sh |
| BTIF | image/prs.btif | .btif |
| BusinessObjects | application/vnd.businessobjects | .rep |
| Bzip Archive | application/x-bzip | .bz |
| Bzip2 Archive | application/x-bzip2 | .bz2 |
| C Shell Script | application/x-csh | .csh |
| C Source File | text/x-c | .c |
| CambridgeSoft Chem Draw | application/vnd.chemdraw+xml | .cdxml |
| Cascading Style Sheets (CSS) | text/css | .css |
| ChemDraw eXchange file | chemical/x-cdx | .cdx |
| Chemical Markup Language | chemical/x-cml | .cml |
| Chemical Style Markup Language | chemical/x-csml | .csml |
| CIM Database | application/vnd.contact.cmsg | .cdbcmsg |
| Claymore Data Files | application/vnd.claymore | .cla |
| Clonk Game | application/vnd.clonk.c4group | .c4g |
| Close Captioning – Subtitle | image/vnd.dvb.subtitle | .sub |
| Cloud Data Management Interface (CDMI) – Capability | application/cdmi-capability | .cdmia |
| Cloud Data Management Interface (CDMI) – Contaimer | application/cdmi-container | .cdmic |
| Cloud Data Management Interface (CDMI) – Domain | application/cdmi-domain | .cdmid |
| Cloud Data Management Interface (CDMI) – Object | application/cdmi-object | .cdmio |
| Cloud Data Management Interface (CDMI) – Queue | application/cdmi-queue | .cdmiq |
| ClueTrust CartoMobile – Config | application/vnd.cluetrust.cartomobile-config | .c11amc |
| ClueTrust CartoMobile – Config Package | application/vnd.cluetrust.cartomobile-config-pkg | .c11amz |
| CMU Image | image/x-cmu-raster | .ras |
| COLLADA | model/vnd.collada+xml | .dae |
| Comma-Seperated Values | text/csv | .csv |
| Compact Pro | application/mac-compactpro | .cpt |
| Compiled Wireless Markup Language (WMLC) | application/vnd.wap.wmlc | .wmlc |
| Computer Graphics Metafile | image/cgm | .cgm |
| CoolTalk | x-conference/x-cooltalk | .ice |
| Corel Metafile Exchange (CMX) | image/x-cmx | .cmx |
| CorelXARA | application/vnd.xara | .xar |
| CosmoCaller | application/vnd.cosmocaller | .cmc |
| CPIO Archive | application/x-cpio | .cpio |
| CrickSoftware – Clicker | application/vnd.crick.clicker | .clkx |
| CrickSoftware – Clicker – Keyboard | application/vnd.crick.clicker.keyboard | .clkk |
| CrickSoftware – Clicker – Palette | application/vnd.crick.clicker.palette | .clkp |
| CrickSoftware – Clicker – Template | application/vnd.crick.clicker.template | .clkt |
| CrickSoftware – Clicker – Wordbank | application/vnd.crick.clicker.wordbank | .clkw |
| Critical Tools – PERT Chart EXPERT | application/vnd.criticaltools.wbs+xml | .wbs |
| CryptoNote | application/vnd.rig.cryptonote | .cryptonote |
| Crystallographic Interchange Format | chemical/x-cif | .cif |
| CrystalMaker Data Format | chemical/x-cmdf | .cmdf |
| CU-SeeMe | application/cu-seeme | .cu |
| CU-Writer | application/prs.cww | .cww |
| Curl – Applet | text/vnd.curl | .curl |
| Curl – Detached Applet | text/vnd.curl.dcurl | .dcurl |
| Curl – Manifest File | text/vnd.curl.mcurl | .mcurl |
| Curl – Source Code | text/vnd.curl.scurl | .scurl |
| CURL Applet | application/vnd.curl.car | .car |
| CURL Applet | application/vnd.curl.pcurl | .pcurl |
| CustomMenu | application/vnd.yellowriver-custom-menu | .cmp |
| Data Structure for the Security Suitability of Cryptographic Algorithms | application/dssc+der | .dssc |
| Data Structure for the Security Suitability of Cryptographic Algorithms | application/dssc+xml | .xdssc |
| Debian Package | application/x-debian-package | .deb |
| DECE Audio | audio/vnd.dece.audio | .uva |
| DECE Graphic | image/vnd.dece.graphic | .uvi |
| DECE High Definition Video | video/vnd.dece.hd | .uvh |
| DECE Mobile Video | video/vnd.dece.mobile | .uvm |
| DECE MP4 | video/vnd.uvvu.mp4 | .uvu |
| DECE PD Video | video/vnd.dece.pd | .uvp |
| DECE SD Video | video/vnd.dece.sd | .uvs |
| DECE Video | video/vnd.dece.video | .uvv |
| Device Independent File Format (DVI) | application/x-dvi | .dvi |
| Digital Siesmograph Networks – SEED Datafiles | application/vnd.fdsn.seed | .seed |
| Digital Talking Book | application/x-dtbook+xml | .dtb |
| Digital Talking Book – Resource File | application/x-dtbresource+xml | .res |
| Digital Video Broadcasting | application/vnd.dvb.ait | .ait |
| Digital Video Broadcasting | application/vnd.dvb.service | .svc |
| Digital Winds Music | audio/vnd.digital-winds | .eol |
| DjVu | image/vnd.djvu | .djvu |
| Document Type Definition | application/xml-dtd | .dtd |
| Dolby Meridian Lossless Packing | application/vnd.dolby.mlp | .mlp |
| Doom Video Game | application/x-doom | .wad |
| DPGraph | application/vnd.dpgraph | .dpg |
| DRA Audio | audio/vnd.dra | .dra |
| DreamFactory | application/vnd.dreamfactory | .dfac |
| DTS Audio | audio/vnd.dts | .dts |
| DTS High Definition Audio | audio/vnd.dts.hd | .dtshd |
| DWG Drawing | image/vnd.dwg | .dwg |
| DynaGeo | application/vnd.dynageo | .geo |
| ECMAScript | application/ecmascript | .es |
| EcoWin Chart | application/vnd.ecowin.chart | .mag |
| EDMICS 2000 | image/vnd.fujixerox.edmics-mmr | .mmr |
| EDMICS 2000 | image/vnd.fujixerox.edmics-rlc | .rlc |
| Efficient XML Interchange | application/exi | .exi |
| EFI Proteus | application/vnd.proteus.magazine | .mgz |
| Electronic Publication | application/epub+zip | .epub |
| Email Message | message/rfc822 | .eml |
| Enliven Viewer | application/vnd.enliven | .nml |
| Express by Infoseek | application/vnd.is-xpr | .xpr |
| eXtended Image File Format (XIFF) | image/vnd.xiff | .xif |
| Extensible Forms Description Language | application/vnd.xfdl | .xfdl |
| Extensible MultiModal Annotation | application/emma+xml | .emma |
| EZPix Secure Photo Album | application/vnd.ezpix-album | .ez2 |
| EZPix Secure Photo Album | application/vnd.ezpix-package | .ez3 |
| FAST Search & Transfer ASA | image/vnd.fst | .fst |
| FAST Search & Transfer ASA | video/vnd.fvt | .fvt |
| FastBid Sheet | image/vnd.fastbidsheet | .fbs |
| FCS Express Layout Link | application/vnd.denovo.fcselayout-link | .fe_launch |
| Flash Video | video/x-f4v | .f4v |
| Flash Video | video/x-flv | .flv |
| FlashPix | image/vnd.fpx | .fpx |
| FlashPix | image/vnd.net-fpx | .npx |
| FLEXSTOR | text/vnd.fmi.flexstor | .flx |
| FLI/FLC Animation Format | video/x-fli | .fli |
| FluxTime Clip | application/vnd.fluxtime.clip | .ftc |
| Forms Data Format | application/vnd.fdf | .fdf |
| Fortran Source File | text/x-fortran | .f |
| FrameMaker Interchange Format | application/vnd.mif | .mif |
| FrameMaker Normal Format | application/vnd.framemaker | .fm |
| FreeHand MX | image/x-freehand | .fh |
| Friendly Software Corporation | application/vnd.fsc.weblaunch | .fsc |
| Frogans Player | application/vnd.frogans.fnc | .fnc |
| Frogans Player | application/vnd.frogans.ltf | .ltf |
| Fujitsu – Xerox 2D CAD Data | application/vnd.fujixerox.ddd | .ddd |
| Fujitsu – Xerox DocuWorks | application/vnd.fujixerox.docuworks | .xdw |
| Fujitsu – Xerox DocuWorks Binder | application/vnd.fujixerox.docuworks.binder | .xbd |
| Fujitsu Oasys | application/vnd.fujitsu.oasys | .oas |
| Fujitsu Oasys | application/vnd.fujitsu.oasys2 | .oa2 |
| Fujitsu Oasys | application/vnd.fujitsu.oasys3 | .oa3 |
| Fujitsu Oasys | application/vnd.fujitsu.oasysgp | .fg5 |
| Fujitsu Oasys | application/vnd.fujitsu.oasysprs | .bh2 |
| FutureSplash Animator | application/x-futuresplash | .spl |
| FuzzySheet | application/vnd.fuzzysheet | .fzs |
| G3 Fax Image | image/g3fax | .g3 |
| GameMaker ActiveX | application/vnd.gmx | .gmx |
| Gen-Trix Studio | model/vnd.gtw | .gtw |
| Genomatix Tuxedo Framework | application/vnd.genomatix.tuxedo | .txd |
| GeoGebra | application/vnd.geogebra.file | .ggb |
| GeoGebra | application/vnd.geogebra.tool | .ggt |
| Geometric Description Language (GDL) | model/vnd.gdl | .gdl |
| GeoMetry Explorer | application/vnd.geometry-explorer | .gex |
| GEONExT and JSXGraph | application/vnd.geonext | .gxt |
| GeoplanW | application/vnd.geoplan | .g2w |
| GeospacW | application/vnd.geospace | .g3w |
| Ghostscript Font | application/x-font-ghostscript | .gsf |
| Glyph Bitmap Distribution Format | application/x-font-bdf | .bdf |
| GNU Tar Files | application/x-gtar | .gtar |
| GNU Texinfo Document | application/x-texinfo | .texinfo |
| Gnumeric | application/x-gnumeric | .gnumeric |
| Google Earth – KML | application/vnd.google-earth.kml+xml | .kml |
| Google Earth – Zipped KML | application/vnd.google-earth.kmz | .kmz |
| GrafEq | application/vnd.grafeq | .gqf |
| Graphics Interchange Format | image/gif | .gif |
| Graphviz | text/vnd.graphviz | .gv |
| Groove – Account | application/vnd.groove-account | .gac |
| Groove – Help | application/vnd.groove-help | .ghf |
| Groove – Identity Message | application/vnd.groove-identity-message | .gim |
| Groove – Injector | application/vnd.groove-injector | .grv |
| Groove – Tool Message | application/vnd.groove-tool-message | .gtm |
| Groove – Tool Template | application/vnd.groove-tool-template | .tpl |
| Groove – Vcard | application/vnd.groove-vcard | .vcg |
| H.261 | video/h261 | .h261 |
| H.263 | video/h263 | .h263 |
| H.264 | video/h264 | .h264 |
| Hewlett Packard Instant Delivery | application/vnd.hp-hpid | .hpid |
| Hewlett-Packard’s WebPrintSmart | application/vnd.hp-hps | .hps |
| Hierarchical Data Format | application/x-hdf | .hdf |
| Hit’n’Mix | audio/vnd.rip | .rip |
| Homebanking Computer Interface (HBCI) | application/vnd.hbci | .hbci |
| HP Indigo Digital Press – Job Layout Languate | application/vnd.hp-jlyt | .jlt |
| HP Printer Command Language | application/vnd.hp-pcl | .pcl |
| HP-GL/2 and HP RTL | application/vnd.hp-hpgl | .hpgl |
| HV Script | application/vnd.yamaha.hv-script | .hvs |
| HV Voice Dictionary | application/vnd.yamaha.hv-dic | .hvd |
| HV Voice Parameter | application/vnd.yamaha.hv-voice | .hvp |
| Hydrostatix Master Suite | application/vnd.hydrostatix.sof-data | .sfd-hdstx |
| Hyperstudio | application/hyperstudio | .stk |
| Hypertext Application Language | application/vnd.hal+xml | .hal |
| HyperText Markup Language (HTML) | text/html | .html |
| IBM DB2 Rights Manager | application/vnd.ibm.rights-management | .irm |
| IBM Electronic Media Management System – Secure Container | application/vnd.ibm.secure-container | .sc |
| iCalendar | text/calendar | .ics |
| ICC profile | application/vnd.iccprofile | .icc |
| Icon Image | image/x-icon | .ico |
| igLoader | application/vnd.igloader | .igl |
| Image Exchange Format | image/ief | .ief |
| ImmerVision PURE Players | application/vnd.immervision-ivp | .ivp |
| ImmerVision PURE Players | application/vnd.immervision-ivu | .ivu |
| IMS Networks | application/reginfo+xml | .rif |
| In3D – 3DML | text/vnd.in3d.3dml | .3dml |
| In3D – 3DML | text/vnd.in3d.spot | .spot |
| Initial Graphics Exchange Specification (IGES) | model/iges | .igs |
| Interactive Geometry Software | application/vnd.intergeo | .i2g |
| Interactive Geometry Software Cinderella | application/vnd.cinderella | .cdy |
| Intercon FormNet | application/vnd.intercon.formnet | .xpw |
| International Society for Advancement of Cytometry | application/vnd.isac.fcs | .fcs |
| Internet Protocol Flow Information Export | application/ipfix | .ipfix |
| Internet Public Key Infrastructure – Certificate | application/pkix-cert | .cer |
| Internet Public Key Infrastructure – Certificate Management Protocole | application/pkixcmp | .pki |
| Internet Public Key Infrastructure – Certificate Revocation Lists | application/pkix-crl | .crl |
| Internet Public Key Infrastructure – Certification Path | application/pkix-pkipath | .pkipath |
| IOCOM Visimeet | application/vnd.insors.igm | .igm |
| IP Unplugged Roaming Client | application/vnd.ipunplugged.rcprofile | .rcprofile |
| iRepository / Lucidoc Editor | application/vnd.irepository.package+xml | .irp |
| J2ME App Descriptor | text/vnd.sun.j2me.app-descriptor | .jad |
| Java Archive | application/java-archive | .jar |
| Java Bytecode File | application/java-vm | .class |
| Java Network Launching Protocol | application/x-java-jnlp-file | .jnlp |
| Java Serialized Object | application/java-serialized-object | .ser |
| Java Source File | text/x-java-source,java | .java |
| JavaScript | application/javascript | .js |
| JavaScript Object Notation (JSON) | application/json | .json |
| Joda Archive | application/vnd.joost.joda-archive | .joda |
| JPEG 2000 Compound Image File Format | video/jpm | .jpm |
| JPEG Image | image/jpeg | .jpeg, .jpg |
| JPEG Image (Citrix client) | image/x-citrix-jpeg | .jpeg, .jpg |
| JPEG Image (Progressive) | image/pjpeg | .pjpeg |
| JPGVideo | video/jpeg | .jpgv |
| Kahootz | application/vnd.kahootz | .ktz |
| Karaoke on Chipnuts Chipsets | application/vnd.chipnuts.karaoke-mmd | .mmd |
| KDE KOffice Office Suite – Karbon | application/vnd.kde.karbon | .karbon |
| KDE KOffice Office Suite – KChart | application/vnd.kde.kchart | .chrt |
| KDE KOffice Office Suite – Kformula | application/vnd.kde.kformula | .kfo |
| KDE KOffice Office Suite – Kivio | application/vnd.kde.kivio | .flw |
| KDE KOffice Office Suite – Kontour | application/vnd.kde.kontour | .kon |
| KDE KOffice Office Suite – Kpresenter | application/vnd.kde.kpresenter | .kpr |
| KDE KOffice Office Suite – Kspread | application/vnd.kde.kspread | .ksp |
| KDE KOffice Office Suite – Kword | application/vnd.kde.kword | .kwd |
| Kenamea App | application/vnd.kenameaapp | .htke |
| Kidspiration | application/vnd.kidspiration | .kia |
| Kinar Applications | application/vnd.kinar | .kne |
| Kodak Storyshare | application/vnd.kodak-descriptor | .sse |
| Laser App Enterprise | application/vnd.las.las+xml | .lasxml |
| LaTeX | application/x-latex | .latex |
| Life Balance – Desktop Edition | application/vnd.llamagraphics.life-balance.desktop | .lbd |
| Life Balance – Exchange Format | application/vnd.llamagraphics.life-balance.exchange+xml | .lbe |
| Lightspeed Audio Lab | application/vnd.jam | .jam |
| Lotus 1-2-3 | application/vnd.lotus-1-2-3 | 0.123 |
| Lotus Approach | application/vnd.lotus-approach | .apr |
| Lotus Freelance | application/vnd.lotus-freelance | .pre |
| Lotus Notes | application/vnd.lotus-notes | .nsf |
| Lotus Organizer | application/vnd.lotus-organizer | .org |
| Lotus Screencam | application/vnd.lotus-screencam | .scm |
| Lotus Wordpro | application/vnd.lotus-wordpro | .lwp |
| Lucent Voice | audio/vnd.lucent.voice | .lvp |
| M3U (Multimedia Playlist) | audio/x-mpegurl | .m3u |
| M4v | video/x-m4v | .m4v |
| Macintosh BinHex 4.0 | application/mac-binhex40 | .hqx |
| MacPorts Port System | application/vnd.macports.portpkg | .portpkg |
| MapGuide DBXML | application/vnd.osgeo.mapguide.package | .mgp |
| MARC Formats | application/marc | .mrc |
| MARC21 XML Schema | application/marcxml+xml | .mrcx |
| Material Exchange Format | application/mxf | .mxf |
| Mathematica Notebook Player | application/vnd.wolfram.player | .nbp |
| Mathematica Notebooks | application/mathematica | .ma |
| Mathematical Markup Language | application/mathml+xml | .mathml |
| Mbox database files | application/mbox | .mbox |
| MedCalc | application/vnd.medcalcdata | .mc1 |
| Media Server Control Markup Language | application/mediaservercontrol+xml | .mscml |
| MediaRemote | application/vnd.mediastation.cdkey | .cdkey |
| Medical Waveform Encoding Format | application/vnd.mfer | .mwf |
| Melody Format for Mobile Platform | application/vnd.mfmp | .mfm |
| Mesh Data Type | model/mesh | .msh |
| Metadata Authority Description Schema | application/mads+xml | .mads |
| Metadata Encoding and Transmission Standard | application/mets+xml | .mets |
| Metadata Object Description Schema | application/mods+xml | .mods |
| Metalink | application/metalink4+xml | .meta4 |
| Micro CADAM Helix D&D | application/vnd.mcd | .mcd |
| Micrografx | application/vnd.micrografx.flo | .flo |
| Micrografx iGrafx Professional | application/vnd.micrografx.igx | .igx |
| MICROSEC e-Szign¢ | application/vnd.eszigno3+xml | .es3 |
| Microsoft Access | application/x-msaccess | .mdb |
| Microsoft Advanced Systems Format (ASF) | video/x-ms-asf | .asf |
| Microsoft Application | application/x-msdownload | .exe |
| Microsoft Artgalry | application/vnd.ms-artgalry | .cil |
| Microsoft Cabinet File | application/vnd.ms-cab-compressed | .cab |
| Microsoft Class Server | application/vnd.ms-ims | .ims |
| Microsoft ClickOnce | application/x-ms-application | .application |
| Microsoft Clipboard Clip | application/x-msclip | .clp |
| Microsoft Document Imaging Format | image/vnd.ms-modi | .mdi |
| Microsoft Embedded OpenType | application/vnd.ms-fontobject | .eot |
| Microsoft Excel | application/vnd.ms-excel | .xls |
| Microsoft Excel – Add-In File | application/vnd.ms-excel.addin.macroenabled.12 | .xlam |
| Microsoft Excel – Binary Workbook | application/vnd.ms-excel.sheet.binary.macroenabled.12 | .xlsb |
| Microsoft Excel – Macro-Enabled Template File | application/vnd.ms-excel.template.macroenabled.12 | .xltm |
| Microsoft Excel – Macro-Enabled Workbook | application/vnd.ms-excel.sheet.macroenabled.12 | .xlsm |
| Microsoft Html Help File | application/vnd.ms-htmlhelp | .chm |
| Microsoft Information Card | application/x-mscardfile | .crd |
| Microsoft Learning Resource Module | application/vnd.ms-lrm | .lrm |
| Microsoft MediaView | application/x-msmediaview | .mvb |
| Microsoft Money | application/x-msmoney | .mny |
| Microsoft Office – OOXML – Presentation | application/vnd.openxmlformats-officedocument.presentationml.presentation | .pptx |
| Microsoft Office – OOXML – Presentation (Slide) | application/vnd.openxmlformats-officedocument.presentationml.slide | .sldx |
| Microsoft Office – OOXML – Presentation (Slideshow) | application/vnd.openxmlformats-officedocument.presentationml.slideshow | .ppsx |
| Microsoft Office – OOXML – Presentation Template | application/vnd.openxmlformats-officedocument.presentationml.template | .potx |
| Microsoft Office – OOXML – Spreadsheet | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | .xlsx |
| Microsoft Office – OOXML – Spreadsheet Template | application/vnd.openxmlformats-officedocument.spreadsheetml.template | .xltx |
| Microsoft Office – OOXML – Word Document | application/vnd.openxmlformats-officedocument.wordprocessingml.document | .docx |
| Microsoft Office – OOXML – Word Document Template | application/vnd.openxmlformats-officedocument.wordprocessingml.template | .dotx |
| Microsoft Office Binder | application/x-msbinder | .obd |
| Microsoft Office System Release Theme | application/vnd.ms-officetheme | .thmx |
| Microsoft OneNote | application/onenote | .onetoc |
| Microsoft PlayReady Ecosystem | audio/vnd.ms-playready.media.pya | .pya |
| Microsoft PlayReady Ecosystem Video | video/vnd.ms-playready.media.pyv | .pyv |
| Microsoft PowerPoint | application/vnd.ms-powerpoint | .ppt |
| Microsoft PowerPoint – Add-in file | application/vnd.ms-powerpoint.addin.macroenabled.12 | .ppam |
| Microsoft PowerPoint – Macro-Enabled Open XML Slide | application/vnd.ms-powerpoint.slide.macroenabled.12 | .sldm |
| Microsoft PowerPoint – Macro-Enabled Presentation File | application/vnd.ms-powerpoint.presentation.macroenabled.12 | .pptm |
| Microsoft PowerPoint – Macro-Enabled Slide Show File | application/vnd.ms-powerpoint.slideshow.macroenabled.12 | .ppsm |
| Microsoft PowerPoint – Macro-Enabled Template File | application/vnd.ms-powerpoint.template.macroenabled.12 | .potm |
| Microsoft Project | application/vnd.ms-project | .mpp |
| Microsoft Publisher | application/x-mspublisher | .pub |
| Microsoft Schedule+ | application/x-msschedule | .scd |
| Microsoft Silverlight | application/x-silverlight-app | .xap |
| Microsoft Trust UI Provider – Certificate Trust Link | application/vnd.ms-pki.stl | .stl |
| Microsoft Trust UI Provider – Security Catalog | application/vnd.ms-pki.seccat | .cat |
| Microsoft Visio | application/vnd.visio | .vsd |
| Microsoft Visio 2013 | application/vnd.visio2013 | .vsdx |
| Microsoft Windows Media | video/x-ms-wm | .wm |
| Microsoft Windows Media Audio | audio/x-ms-wma | .wma |
| Microsoft Windows Media Audio Redirector | audio/x-ms-wax | .wax |
| Microsoft Windows Media Audio/Video Playlist | video/x-ms-wmx | .wmx |
| Microsoft Windows Media Player Download Package | application/x-ms-wmd | .wmd |
| Microsoft Windows Media Player Playlist | application/vnd.ms-wpl | .wpl |
| Microsoft Windows Media Player Skin Package | application/x-ms-wmz | .wmz |
| Microsoft Windows Media Video | video/x-ms-wmv | .wmv |
| Microsoft Windows Media Video Playlist | video/x-ms-wvx | .wvx |
| Microsoft Windows Metafile | application/x-msmetafile | .wmf |
| Microsoft Windows Terminal Services | application/x-msterminal | .trm |
| Microsoft Word | application/msword | .doc |
| Microsoft Word – Macro-Enabled Document | application/vnd.ms-word.document.macroenabled.12 | .docm |
| Microsoft Word – Macro-Enabled Template | application/vnd.ms-word.template.macroenabled.12 | .dotm |
| Microsoft Wordpad | application/x-mswrite | .wri |
| Microsoft Works | application/vnd.ms-works | .wps |
| Microsoft XAML Browser Application | application/x-ms-xbap | .xbap |
| Microsoft XML Paper Specification | application/vnd.ms-xpsdocument | .xps |
| MIDI – Musical Instrument Digital Interface | audio/midi | .mid |
| MiniPay | application/vnd.ibm.minipay | .mpy |
| MO:DCA-P | application/vnd.ibm.modcap | .afp |
| Mobile Information Device Profile | application/vnd.jcp.javame.midlet-rms | .rms |
| MobileTV | application/vnd.tmobile-livetv | .tmo |
| Mobipocket | application/x-mobipocket-ebook | .prc |
| Mobius Management Systems – Basket file | application/vnd.mobius.mbk | .mbk |
| Mobius Management Systems – Distribution Database | application/vnd.mobius.dis | .dis |
| Mobius Management Systems – Policy Definition Language File | application/vnd.mobius.plc | .plc |
| Mobius Management Systems – Query File | application/vnd.mobius.mqy | .mqy |
| Mobius Management Systems – Script Language | application/vnd.mobius.msl | .msl |
| Mobius Management Systems – Topic Index File | application/vnd.mobius.txf | .txf |
| Mobius Management Systems – UniversalArchive | application/vnd.mobius.daf | .daf |
| mod_fly / fly.cgi | text/vnd.fly | .fly |
| Mophun Certificate | application/vnd.mophun.certificate | .mpc |
| Mophun VM | application/vnd.mophun.application | .mpn |
| Motion JPEG 2000 | video/mj2 | .mj2 |
| MPEG Audio | audio/mpeg | .mpga |
| MPEG Url | video/vnd.mpegurl | .mxu |
| MPEG Video | video/mpeg | .mpeg |
| MPEG-21 | application/mp21 | .m21 |
| MPEG-4 Audio | audio/mp4 | .mp4a |
| MPEG-4 Video | video/mp4 | .mp4 |
| MPEG4 | application/mp4 | .mp4 |
| Multimedia Playlist Unicode | application/vnd.apple.mpegurl | .m3u8 |
| MUsical Score Interpreted Code Invented for the ASCII designation of Notation | application/vnd.musician | .mus |
| Muvee Automatic Video Editing | application/vnd.muvee.style | .msty |
| MXML | application/xv+xml | .mxml |
| N-Gage Game Data | application/vnd.nokia.n-gage.data | .ngdat |
| N-Gage Game Installer | application/vnd.nokia.n-gage.symbian.install | .n-gage |
| Navigation Control file for XML (for ePub) | application/x-dtbncx+xml | .ncx |
| Network Common Data Form (NetCDF) | application/x-netcdf | .nc |
| neuroLanguage | application/vnd.neurolanguage.nlu | .nlu |
| New Moon Liftoff/DNA | application/vnd.dna | .dna |
| NobleNet Directory | application/vnd.noblenet-directory | .nnd |
| NobleNet Sealer | application/vnd.noblenet-sealer | .nns |
| NobleNet Web | application/vnd.noblenet-web | .nnw |
| Nokia Radio Application – Preset | application/vnd.nokia.radio-preset | .rpst |
| Nokia Radio Application – Preset | application/vnd.nokia.radio-presets | .rpss |
| Notation3 | text/n3 | .n3 |
| Novadigm’s RADIA and EDM products | application/vnd.novadigm.edm | .edm |
| Novadigm’s RADIA and EDM products | application/vnd.novadigm.edx | .edx |
| Novadigm’s RADIA and EDM products | application/vnd.novadigm.ext | .ext |
| NpGraphIt | application/vnd.flographit | .gph |
| Nuera ECELP 4800 | audio/vnd.nuera.ecelp4800 | .ecelp4800 |
| Nuera ECELP 7470 | audio/vnd.nuera.ecelp7470 | .ecelp7470 |
| Nuera ECELP 9600 | audio/vnd.nuera.ecelp9600 | .ecelp9600 |
| Office Document Architecture | application/oda | .oda |
| Ogg | application/ogg | .ogx |
| Ogg Audio | audio/ogg | .oga |
| Ogg Video | video/ogg | .ogv |
| OMA Download Agents | application/vnd.oma.dd2+xml | .dd2 |
| Open Document Text Web | application/vnd.oasis.opendocument.text-web | .oth |
| Open eBook Publication Structure | application/oebps-package+xml | .opf |
| Open Financial Exchange | application/vnd.intu.qbo | .qbo |
| Open Office Extension | application/vnd.openofficeorg.extension | .oxt |
| Open Score Format | application/vnd.yamaha.openscoreformat | .osf |
| Open Web Media Project – Audio | audio/webm | .weba |
| Open Web Media Project – Video | video/webm | .webm |
| OpenDocument Chart | application/vnd.oasis.opendocument.chart | .odc |
| OpenDocument Chart Template | application/vnd.oasis.opendocument.chart-template | .otc |
| OpenDocument Database | application/vnd.oasis.opendocument.database | .odb |
| OpenDocument Formula | application/vnd.oasis.opendocument.formula | .odf |
| OpenDocument Formula Template | application/vnd.oasis.opendocument.formula-template | .odft |
| OpenDocument Graphics | application/vnd.oasis.opendocument.graphics | .odg |
| OpenDocument Graphics Template | application/vnd.oasis.opendocument.graphics-template | .otg |
| OpenDocument Image | application/vnd.oasis.opendocument.image | .odi |
| OpenDocument Image Template | application/vnd.oasis.opendocument.image-template | .oti |
| OpenDocument Presentation | application/vnd.oasis.opendocument.presentation | .odp |
| OpenDocument Presentation Template | application/vnd.oasis.opendocument.presentation-template | .otp |
| OpenDocument Spreadsheet | application/vnd.oasis.opendocument.spreadsheet | .ods |
| OpenDocument Spreadsheet Template | application/vnd.oasis.opendocument.spreadsheet-template | .ots |
| OpenDocument Text | application/vnd.oasis.opendocument.text | .odt |
| OpenDocument Text Master | application/vnd.oasis.opendocument.text-master | .odm |
| OpenDocument Text Template | application/vnd.oasis.opendocument.text-template | .ott |
| OpenGL Textures (KTX) | image/ktx | .ktx |
| OpenOffice – Calc (Spreadsheet) | application/vnd.sun.xml.calc | .sxc |
| OpenOffice – Calc Template (Spreadsheet) | application/vnd.sun.xml.calc.template | .stc |
| OpenOffice – Draw (Graphics) | application/vnd.sun.xml.draw | .sxd |
| OpenOffice – Draw Template (Graphics) | application/vnd.sun.xml.draw.template | .std |
| OpenOffice – Impress (Presentation) | application/vnd.sun.xml.impress | .sxi |
| OpenOffice – Impress Template (Presentation) | application/vnd.sun.xml.impress.template | .sti |
| OpenOffice – Math (Formula) | application/vnd.sun.xml.math | .sxm |
| OpenOffice – Writer (Text – HTML) | application/vnd.sun.xml.writer | .sxw |
| OpenOffice – Writer (Text – HTML) | application/vnd.sun.xml.writer.global | .sxg |
| OpenOffice – Writer Template (Text – HTML) | application/vnd.sun.xml.writer.template | .stw |
| OpenType Font File | application/x-font-otf | .otf |
| OSFPVG | application/vnd.yamaha.openscoreformat.osfpvg+xml | .osfpvg |
| OSGi Deployment Package | application/vnd.osgi.dp | .dp |
| PalmOS Data | application/vnd.palm | .pdb |
| Pascal Source File | text/x-pascal | .p |
| PawaaFILE | application/vnd.pawaafile | .paw |
| PCL 6 Enhanced (Formely PCL XL) | application/vnd.hp-pclxl | .pclxl |
| Pcsel eFIF File | application/vnd.picsel | .efif |
| PCX Image | image/x-pcx | .pcx |
| Photoshop Document | image/vnd.adobe.photoshop | .psd |
| PICSRules | application/pics-rules | .prf |
| PICT Image | image/x-pict | .pic |
| pIRCh | application/x-chat | .chat |
| PKCS #10 – Certification Request Standard | application/pkcs10 | .p10 |
| PKCS #12 – Personal Information Exchange Syntax Standard | application/x-pkcs12 | .p12 |
| PKCS #7 – Cryptographic Message Syntax Standard | application/pkcs7-mime | .p7m |
| PKCS #7 – Cryptographic Message Syntax Standard | application/pkcs7-signature | .p7s |
| PKCS #7 – Cryptographic Message Syntax Standard (Certificate Request Response) | application/x-pkcs7-certreqresp | .p7r |
| PKCS #7 – Cryptographic Message Syntax Standard (Certificates) | application/x-pkcs7-certificates | .p7b |
| PKCS #8 – Private-Key Information Syntax Standard | application/pkcs8 | .p8 |
| PocketLearn Viewers | application/vnd.pocketlearn | .plf |
| Portable Anymap Image | image/x-portable-anymap | .pnm |
| Portable Bitmap Format | image/x-portable-bitmap | .pbm |
| Portable Compiled Format | application/x-font-pcf | .pcf |
| Portable Font Resource | application/font-tdpfr | .pfr |
| Portable Game Notation (Chess Games) | application/x-chess-pgn | .pgn |
| Portable Graymap Format | image/x-portable-graymap | .pgm |
| Portable Network Graphics (PNG) | image/png | .png |
| Portable Network Graphics (PNG) (Citrix client) | image/x-citrix-png | .png |
| Portable Network Graphics (PNG) (x-token) | image/x-png | .png |
| Portable Pixmap Format | image/x-portable-pixmap | .ppm |
| Portable Symmetric Key Container | application/pskc+xml | .pskcxml |
| PosML | application/vnd.ctc-posml | .pml |
| PostScript | application/postscript | .ai |
| PostScript Fonts | application/x-font-type1 | .pfa |
| PowerBuilder | application/vnd.powerbuilder6 | .pbd |
| Pretty Good Privacy | application/pgp-encrypted | .pgp |
| Pretty Good Privacy – Signature | application/pgp-signature | .pgp |
| Preview Systems ZipLock/VBox | application/vnd.previewsystems.box | .box |
| Princeton Video Image | application/vnd.pvi.ptid1 | .ptid |
| Pronunciation Lexicon Specification | application/pls+xml | .pls |
| Proprietary P&G Standard Reporting System | application/vnd.pg.format | .str |
| Proprietary P&G Standard Reporting System | application/vnd.pg.osasli | .ei6 |
| PRS Lines Tag | text/prs.lines.tag | .dsc |
| PSF Fonts | application/x-font-linux-psf | .psf |
| PubliShare Objects | application/vnd.publishare-delta-tree | .qps |
| Qualcomm’s Plaza Mobile Internet | application/vnd.pmi.widget | .wg |
| QuarkXpress | application/vnd.quark.quarkxpress | .qxd |
| QUASS Stream Player | application/vnd.epson.esf | .esf |
| QUASS Stream Player | application/vnd.epson.msf | .msf |
| QUASS Stream Player | application/vnd.epson.ssf | .ssf |
| QuickAnime Player | application/vnd.epson.quickanime | .qam |
| Quicken | application/vnd.intu.qfx | .qfx |
| Quicktime Video | video/quicktime | .qt |
| RAR Archive | application/x-rar-compressed | .rar |
| Real Audio Sound | audio/x-pn-realaudio | .ram |
| Real Audio Sound | audio/x-pn-realaudio-plugin | .rmp |
| Really Simple Discovery | application/rsd+xml | .rsd |
| RealMedia | application/vnd.rn-realmedia | .rm |
| RealVNC | application/vnd.realvnc.bed | .bed |
| Recordare Applications | application/vnd.recordare.musicxml | .mxl |
| Recordare Applications | application/vnd.recordare.musicxml+xml | .musicxml |
| Relax NG Compact Syntax | application/relax-ng-compact-syntax | .rnc |
| RemoteDocs R-Viewer | application/vnd.data-vision.rdz | .rdz |
| Resource Description Framework | application/rdf+xml | .rdf |
| RetroPlatform Player | application/vnd.cloanto.rp9 | .rp9 |
| RhymBox | application/vnd.jisp | .jisp |
| Rich Text Format | application/rtf | .rtf |
| Rich Text Format (RTF) | text/richtext | .rtx |
| ROUTE 66 Location Based Services | application/vnd.route66.link66+xml | .link66 |
| RSS – Really Simple Syndication | application/rss+xml | .rss, .xml |
| S Hexdump Format | application/shf+xml | .shf |
| SailingTracker | application/vnd.sailingtracker.track | .st |
| Scalable Vector Graphics (SVG) | image/svg+xml | .svg |
| ScheduleUs | application/vnd.sus-calendar | .sus |
| Search/Retrieve via URL Response Format | application/sru+xml | .sru |
| Secure Electronic Transaction – Payment | application/set-payment-initiation | .setpay |
| Secure Electronic Transaction – Registration | application/set-registration-initiation | .setreg |
| Secured eMail | application/vnd.sema | .sema |
| Secured eMail | application/vnd.semd | .semd |
| Secured eMail | application/vnd.semf | .semf |
| SeeMail | application/vnd.seemail | .see |
| Server Normal Format | application/x-font-snf | .snf |
| Server-Based Certificate Validation Protocol – Validation Policies – Request | application/scvp-vp-request | .spq |
| Server-Based Certificate Validation Protocol – Validation Policies – Response | application/scvp-vp-response | .spp |
| Server-Based Certificate Validation Protocol – Validation Request | application/scvp-cv-request | .scq |
| Server-Based Certificate Validation Protocol – Validation Response | application/scvp-cv-response | .scs |
| Session Description Protocol | application/sdp | .sdp |
| Setext | text/x-setext | .etx |
| SGI Movie | video/x-sgi-movie | .movie |
| Shana Informed Filler | application/vnd.shana.informed.formdata | .ifm |
| Shana Informed Filler | application/vnd.shana.informed.formtemplate | .itp |
| Shana Informed Filler | application/vnd.shana.informed.interchange | .iif |
| Shana Informed Filler | application/vnd.shana.informed.package | .ipk |
| Sharing Transaction Fraud Data | application/thraud+xml | .tfi |
| Shell Archive | application/x-shar | .shar |
| Silicon Graphics RGB Bitmap | image/x-rgb | .rgb |
| SimpleAnimeLite Player | application/vnd.epson.salt | .slt |
| Simply Accounting | application/vnd.accpac.simply.aso | .aso |
| Simply Accounting – Data Import | application/vnd.accpac.simply.imp | .imp |
| SimTech MindMapper | application/vnd.simtech-mindmapper | .twd |
| Sixth Floor Media – CommonSpace | application/vnd.commonspace | .csp |
| SMAF Audio | application/vnd.yamaha.smaf-audio | .saf |
| SMAF File | application/vnd.smaf | .mmf |
| SMAF Phrase | application/vnd.yamaha.smaf-phrase | .spf |
| SMART Technologies Apps | application/vnd.smart.teacher | .teacher |
| SourceView Document | application/vnd.svd | .svd |
| SPARQL – Query | application/sparql-query | .rq |
| SPARQL – Results | application/sparql-results+xml | .srx |
| Speech Recognition Grammar Specification | application/srgs | .gram |
| Speech Recognition Grammar Specification – XML | application/srgs+xml | .grxml |
| Speech Synthesis Markup Language | application/ssml+xml | .ssml |
| SSEYO Koan Play File | application/vnd.koan | .skp |
| Standard Generalized Markup Language (SGML) | text/sgml | .sgml |
| StarOffice – Calc | application/vnd.stardivision.calc | .sdc |
| StarOffice – Draw | application/vnd.stardivision.draw | .sda |
| StarOffice – Impress | application/vnd.stardivision.impress | .sdd |
| StarOffice – Math | application/vnd.stardivision.math | .smf |
| StarOffice – Writer | application/vnd.stardivision.writer | .sdw |
| StarOffice – Writer (Global) | application/vnd.stardivision.writer-global | .sgl |
| StepMania | application/vnd.stepmania.stepchart | .sm |
| Stuffit Archive | application/x-stuffit | .sit |
| Stuffit Archive | application/x-stuffitx | .sitx |
| SudokuMagic | application/vnd.solent.sdkm+xml | .sdkm |
| Sugar Linux Application Bundle | application/vnd.olpc-sugar | .xo |
| Sun Audio – Au file format | audio/basic | .au |
| SundaHus WQ | application/vnd.wqd | .wqd |
| Symbian Install Package | application/vnd.symbian.install | .sis |
| Synchronized Multimedia Integration Language | application/smil+xml | .smi |
| SyncML | application/vnd.syncml+xml | .xsm |
| SyncML – Device Management | application/vnd.syncml.dm+wbxml | .bdm |
| SyncML – Device Management | application/vnd.syncml.dm+xml | .xdm |
| System V Release 4 CPIO Archive | application/x-sv4cpio | .sv4cpio |
| System V Release 4 CPIO Checksum Data | application/x-sv4crc | .sv4crc |
| Systems Biology Markup Language | application/sbml+xml | .sbml |
| Tab Seperated Values | text/tab-separated-values | .tsv |
| Tagged Image File Format | image/tiff | .tiff |
| Tao Intent | application/vnd.tao.intent-module-archive | .tao |
| Tar File (Tape Archive) | application/x-tar | .tar |
| Tcl Script | application/x-tcl | .tcl |
| TeX | application/x-tex | .tex |
| TeX Font Metric | application/x-tex-tfm | .tfm |
| Text Encoding and Interchange | application/tei+xml | .tei |
| Text File | text/plain | .txt |
| TIBCO Spotfire | application/vnd.spotfire.dxp | .dxp |
| TIBCO Spotfire | application/vnd.spotfire.sfs | .sfs |
| Time Stamped Data Envelope | application/timestamped-data | .tsd |
| TRI Systems Config | application/vnd.trid.tpt | .tpt |
| Triscape Map Explorer | application/vnd.triscape.mxs | .mxs |
| troff | text/troff | .t |
| True BASIC | application/vnd.trueapp | .tra |
| TrueType Font | application/x-font-ttf | .ttf |
| Turtle (Terse RDF Triple Language) | text/turtle | .ttl |
| UMAJIN | application/vnd.umajin | .umj |
| Unique Object Markup Language | application/vnd.uoml+xml | .uoml |
| Unity 3d | application/vnd.unity | .unityweb |
| Universal Forms Description Language | application/vnd.ufdl | .ufd |
| URI Resolution Services | text/uri-list | .uri |
| User Interface Quartz – Theme (Symbian) | application/vnd.uiq.theme | .utz |
| Ustar (Uniform Standard Tape Archive) | application/x-ustar | .ustar |
| UUEncode | text/x-uuencode | .uu |
| vCalendar | text/x-vcalendar | .vcs |
| vCard | text/x-vcard | .vcf |
| Video CD | application/x-cdlink | .vcd |
| Viewport+ | application/vnd.vsf | .vsf |
| Virtual Reality Modeling Language | model/vrml | .wrl |
| VirtualCatalog | application/vnd.vcx | .vcx |
| Virtue MTS | model/vnd.mts | .mts |
| Virtue VTU | model/vnd.vtu | .vtu |
| Visionary | application/vnd.visionary | .vis |
| Vivo | video/vnd.vivo | .viv |
| Voice Browser Call Control | application/ccxml+xml, | .ccxml |
| VoiceXML | application/voicexml+xml | .vxml |
| WAIS Source | application/x-wais-source | .src |
| WAP Binary XML (WBXML) | application/vnd.wap.wbxml | .wbxml |
| WAP Bitamp (WBMP) | image/vnd.wap.wbmp | .wbmp |
| Waveform Audio File Format (WAV) | audio/x-wav | .wav |
| Web Distributed Authoring and Versioning | application/davmount+xml | .davmount |
| Web Open Font Format | application/x-font-woff | .woff |
| Web Services Policy | application/wspolicy+xml | .wspolicy |
| WebP Image | image/webp | .webp |
| WebTurbo | application/vnd.webturbo | .wtb |
| Widget Packaging and XML Configuration | application/widget | .wgt |
| WinHelp | application/winhlp | .hlp |
| Wireless Markup Language (WML) | text/vnd.wap.wml | .wml |
| Wireless Markup Language Script (WMLScript) | text/vnd.wap.wmlscript | .wmls |
| WMLScript | application/vnd.wap.wmlscriptc | .wmlsc |
| Wordperfect | application/vnd.wordperfect | .wpd |
| Worldtalk | application/vnd.wt.stf | .stf |
| WSDL – Web Services Description Language | application/wsdl+xml | .wsdl |
| X BitMap | image/x-xbitmap | .xbm |
| X PixMap | image/x-xpixmap | .xpm |
| X Window Dump | image/x-xwindowdump | .xwd |
| X.509 Certificate | application/x-x509-ca-cert | .der |
| Xfig | application/x-xfig | .fig |
| XHTML – The Extensible HyperText Markup Language | application/xhtml+xml | .xhtml |
| XML – Extensible Markup Language | application/xml | .xml |
| XML Configuration Access Protocol – XCAP Diff | application/xcap-diff+xml | .xdf |
| XML Encryption Syntax and Processing | application/xenc+xml | .xenc |
| XML Patch Framework | application/patch-ops-error+xml | .xer |
| XML Resource Lists | application/resource-lists+xml | .rl |
| XML Resource Lists | application/rls-services+xml | .rs |
| XML Resource Lists Diff | application/resource-lists-diff+xml | .rld |
| XML Transformations | application/xslt+xml | .xslt |
| XML-Binary Optimized Packaging | application/xop+xml | .xop |
| XPInstall – Mozilla | application/x-xpinstall | .xpi |
| XSPF – XML Shareable Playlist Format | application/xspf+xml | .xspf |
| XUL – XML User Interface Language | application/vnd.mozilla.xul+xml | .xul |
| XYZ File Format | chemical/x-xyz | .xyz |
| YAML Ain’t Markup Language / Yet Another Markup Language | text/yaml | .yaml |
| YANG Data Modeling Language | application/yang | .yang |
| YIN (YANG – XML) | application/yin+xml | .yin |
| Z.U.L. Geometry | application/vnd.zul | .zir |
| Zip Archive | application/zip | .zip |
| ZVUE Media Manager | application/vnd.handheld-entertainment+xml | .zmm |
| Zzazz Deck | application/vnd.zzazz.deck+xml | .zaz |