| 拡張子 | mime-type | 備考 |
| 123 | application/vnd.lotus-1-2-3 | lotus-1-2-3 |
| 3g2 | video/3gpp2 | |
| 3gp | video/3gpp | |
| aab | application/x-authorware-bin | Shockwave for Authorware |
| aac | audio/aac | |
| aam | application/x-authorware-map | Shockwave for Authorware |
| aas | application/x-authorware-seg | Shockwave for Authorware |
| ai | application/postscript | Illustrator |
| aif | audio/aiff | AIFF（Audio Interchange File Format） |
| aif | audio/x-aiff | AIFF（Audio Interchange File Format） |
| aifc | audio/x-aiff | |
| aiff | audio/aiff | AIFF（Audio Interchange File Format） |
| aiff | audio/x-aiff | AIFF（Audio Interchange File Format） |
| als | audio/X-Alpha5 | |
| amc | application/x-mpeg | |
| amr | audio/amr | |
| application | application/x-ms-application | |
| asc | text/plain | |
| asd | application/astound | |
| asf | video/x-ms-asf | Advanced Streaming Format |
| asn | application/astound | |
| asp | application/x-asap | |
| asx | video/x-ms-asf | |
| atom | application/atom+xml | |
| au | audio/basic | au（Audio File） |
| avb | application/octet-stream | |
| avi | vide/x-msvideo | AVI |
| avi | video/msvideo | |
| awb | audio/amr-wb | |
| bin | application/octet-stream | |
| bld | application/bld | |
| bld2 | application/bld2 | |
| bml | text/html | |
| bmp | image/x-bmp | BMP/Windows Bitmap |
| bmp | image/x-ms-bmp | BMP/Windows Bitmap |
| bmp | image/bmp | |
| bpk | application/octet-stream | |
| bz2 | application/x-bzip2 | |
| cal | image/x-cals | |
| ccn | application/x-cnc | |
| cco | application/x-cocoa | |
| cdf | application/x-netcdf | Channel Definition format |
| cgi | application/x-httpd-cgi | CGIスクリプト |
| cgm | image/cgm | CGM（Computer Graphics Metafile） |
| class | application/octet-stream | Java クラスファイル |
| clp | application/x-msclip | |
| cmx | application/x-cmx | |
| co | application/x-cult3d-object | |
| cod | image/cis-cod | |
| cpt | application/mac-compactpro | Compact Pro |
| crd | application/x-mscardfile | |
| csh | application/x-csh | |
| csm | chemical/x-csml | |
| csml | chemical/x-csml | |
| css | text/css | CSS |
| dcf | application/vnd.oma.drm.content | |
| dcm | x-lml/x-evm | |
| dcr | application/x-director | Shockwave for Director |
| dcx | image/x-dcx | |
| dd | application/vnd.oma.dd+xml | |
| dib | image/x-bmp | BMP/Windows Bitmap |
| dib | image/x-ms-bmp | BMP/Windows Bitmap |
| dic | application/x-kyocera-dictionary | |
| dir | application/x-director | Shockwave for Director |
| dll | application/octet-stream | |
| dm | application/vnd.oma.drm.message | |
| doc | application/msword | Word文書 |
| dot | application/x-dot | |
| dr | application/vnd.oma.drm.rights+xml | |
| dsh | application/x-shoin-dictionary | |
| dtd | application/xml-dtd | |
| dvi | application/x-dvi | |
| dwf | drawing/x-dwf | AutoCAD DWF（Drawing Web Format） |
| dwg | image/vnd | |
| dxf | image/x-dxf | |
| dxr | application/x-director | Shockwave for Director |
| ebk | application/x-expandedbook | |
| emb | chemical/x-embl-dl-nucleotide | |
| embl | chemical/x-embl-dl-nucleotide | |
| eps | application/postscript | EPS（Encapsulated Postscript Format） |
| epsf | application/postscript | EPS（Encapsulated Postscript Format） |
| eri | image/x-eri | |
| es | audio/echospeech | |
| esl | audio/echospeech | |
| etc | application/x-earthtime | |
| etx | text/x-setext | |
| evm | x-lml/x-evm | |
| evy | application/x-envoy | |
| evy | application/x-envoy | |
| exe | application/exe | Windows 実行ファイル |
| exe | application/octet-stream | Windows 実行ファイル |
| fgd | application/x-director | |
| fh | image/x-freehand | |
| fh4 | image/x-freehand | |
| fh5 | image/x-freehand | |
| fhc | image/x-freehand | |
| fif | image/fif | FIF（Fractal Image Format） |
| flc | video/flc | Autodesk Animator |
| fli | video/flc | Autodesk Animator |
| flv | video/x-flv | |
| fm | application/x-maker | |
| fpx | image/fpx | FlashPix |
| fpx | image/x-fpx | FlashPix |
| fvi | video/isivideo | |
| gau | chemical/x-gaussian-input | |
| gca | application/x-gca-compressed | |
| gdb | x-lml/x-gdb | |
| gif | image/gif | GIF（Graphics Interchange Format） |
| gps | application/x-gps | |
| gtar | application/x-gtar | |
| gz | application/gzip | GZIP（GNU ZIP） |
| gz | application/x-gzip | GZIP（GNU ZIP） |
| gz | x-gzip | |
| hdf | application/x-hdf | |
| hdm | text/x-hdml | |
| hdml | text/x-hdml | |
| hlp | application/winhlp | |
| hqx | application/mac-binhex40 | BinHex（テキストエンコード；Macintosh） |
| htc | text/x-component | |
| htm | text/html | HTML（Hyper Text Markup Language） |
| html | text/html | HTML（Hyper Text Markup Language） |
| hvs | application/vnd.yamaha.hv-script | |
| ice | x-conference/x-cooltalk | |
| ico | image/x-icon | |
| ief | image/ief | |
| ifm | image/gif | |
| ifs | image/ifs | |
| imy | audio/x-imy | |
| ins | application/x-NET-Install | |
| ips | application/x-ipscript | |
| ipx | application/x-ipix | |
| it | audio/x-mod | |
| itz | audio/x-mod | |
| ivr | i-world/i-vrml | |
| j2k | image/j2k | |
| jad | text/vnd.sun.j2me.app-descriptor | |
| jam | application/x-jam | |
| jar | application/java-archiver | JAR（Java Archiver） |
| jar | application/java-archive | |
| jfi | image/jpeg | JPEG（Joint Photographics Experts Group） |
| jfif | image/jpeg | JPEG（Joint Photographics Experts Group） |
| jnlp | application/x-java-jnlp-file | |
| jpe | image/jpeg | JPEG（Joint Photographics Experts Group） |
| jpeg | image/jpeg | JPEG（Joint Photographics Experts Group） |
| jpg | image/jpeg | JPEG（Joint Photographics Experts Group） |
| jpz | image/jpeg | |
| js | text/javascript | JavaScript |
| js | application/x-javascript | |
| jwc | application/jwc | |
| kar | audio/midi | MIDI カラオケ |
| kar | audio/x-midi | MIDI カラオケ |
| kik | application/x-kik | |
| kjx | application/x-kjx | |
| kml | application/vnd.google-earth.kml+xml | |
| kmz | application/vnd.google-earth.kmz | |
| lak | x-lml/x-lak | |
| latex | application/x-latex | LaTeX |
| lcc | application/fastman | |
| lcl | application/x-digitalloca | |
| lcr | application/x-digitalloca | |
| lgh | application/lgh | |
| lml | x-lml/x-lml | |
| lmlpack | x-lml/x-lmlpack | |
| lsf | video/x-ms-asf | |
| lsx | video/x-ms-asf | |
| ltx | application/x-latex | LaTeX |
| lzh | application/x-lzh | |
| m13 | application/x-msmediaview | |
| m14 | application/x-msmediaview | |
| m1a | audio/mpeg | MPEG 1 Audio Stream |
| m1a | audio/x-mpeg | MPEG 1 Audio Stream |
| m1s | video/mpeg | MPEG 1 System Stream |
| m1s | video/x-mpeg | MPEG 1 System Stream |
| m1v | video/mpeg | MPEG 1 Video Stream |
| m1v | video/x-mpeg | MPEG 1 Video Stream |
| m2a | audio/mpeg | MPEG 2 Audio Stream |
| m2a | audio/x-mpeg | MPEG 2 Audio Stream |
| m2s | video/mpeg | MPEG 2 System Stream |
| m2s | video/x-mpeg | MPEG 2 System Stream |
| m2v | video/mpeg | MPEG 2 Video Stream |
| m2v | video/x-mpeg | MPEG 2 Video Stream |
| m3u | audio/x-mpegurl | |
| m4a | audio/mp4 | |
| man | application/x-troff-man | |
| manifest | text/xml | |
| mbd | application/mbedlet | |
| mct | application/x-mascot | |
| mdb | application/x-msaccess | |
| mdz | audio/x-mod | |
| me | application/x-troff-me | |
| mi | application/x-mif | |
| mid | audio/midi | MIDI |
| mid | audio/x-midi | MIDI |
| midi | audio/midi | MIDI |
| midi | audio/x-midi | MIDI |
| mif | application/x-mif | |
| mil | image/x-cals | |
| mio | audio/x-mio | |
| mmf | application/x-smaf | |
| mng | video/mng | MNG（Multiple Network Graphics） |
| mng | video/x-mng | MNG（Multiple Network Graphics） |
| mny | application/x-msmoney | |
| moc | application/x-mocha | |
| mocha | application/x-mocha | |
| mod | audio/x-mod | |
| mof | application/x-yumekara | |
| mol | chemical/x-mdl-molfile | |
| moov | video/quicktime | Apple QuickTime Movie |
| mop | chemical/x-mopac-input | |
| mov | video/quicktime | Apple QuickTime Movie |
| movie | video/x-sgi-movie | |
| mp2 | audio/mpeg | MPEG 1 Layer 2 Audio Stream |
| mp2 | audio/x-mpeg | MPEG 1 Layer 2 Audio Stream |
| mp3 | audio/mpeg | MPEG 1 Layer 3 Audio Stream |
| mp3 | audio/x-mpeg | MPEG 1 Layer 3 Audio Stream |
| mp4 | video/mp4 | |
| mpa | audio/mpeg | MPEG Audio Stream |
| mpa | audio/x-mpeg | MPEG Audio Stream |
| mpe | video/mpeg | MPEG Video/Audio/System |
| mpe | video/x-mpeg | MPEG Video/Audio/System |
| mpeg | video/mpeg | MPEG Video/Audio/System |
| mpeg | video/x-mpeg | MPEG Video/Audio/System |
| mpega | audio/mpeg | MPEG Audio Stream |
| mpega | audio/x-mpeg | MPEG Audio Stream |
| mpg | video/mpeg | MPEG Video/Audio/System |
| mpg | video/x-mpeg | MPEG Video/Audio/System |
| mpg4 | video/mp4 | |
| mpp | application/vnd.ms-project | |
| mps | application/x-mapserver | |
| mpv | video/mpeg | MPEG Video/Audio/System |
| mpv | video/x-mpeg | MPEG Video/Audio/System |
| mrl | text/x-mrml | |
| mrm | application/x-mrm | |
| ms | application/x-troff-ms | |
| mts | application/metastream | |
| mtx | application/metastream | |
| mtz | application/metastream | |
| mzv | application/metastream | |
| nar | application/zip | |
| nc | application/x-netcdf | |
| ndb | x-lml/x-ndb | |
| nif | application/x-nif | |
| nmz | application/x-scream | |
| npx | application/x-netfpx | |
| nva | application/x-neva1 | |
| oda | application/oda | |
| odb | application/vnd.oasis.opendocument.database | |
| ods | application/vnd.oasis.opendocument.spreadsheet | |
| odt | application/vnd.oasis.opendocument.text | |
| oom | application/x-AtlasMate-Plugin | |
| pac | audio/x-pac | |
| pae | audio/x-epac | |
| pan | application/x-pan | |
| pbm | image/x-portable-bitmap | |
| pcd | image/pcd | Kodak PhotoCD |
| pcd | image/x-photo-cd | Kodak PhotoCD |
| pct | image/pict | PICT（QuickDraw Picture） |
| pcx | image/x-pcx | |
| pda | image/x-pda | |
| pdb | chemical/x-pdb | |
| pdf | application/pdf | PDF（Portable Document Format） |
| pfr | application/font-tdpfr | |
| pgm | image/x-portable-graymap | |
| pict | image/pict | PICT（QuickDraw Picture） |
| pict | image/x-pict | |
| pl | application/x-perl | Perl スクリプト |
| pm | application/x-perl | |
| pmd | application/x-pmd | |
| png | image/x-png | PNG（Portable Network Graphics） |
| png | image/png | PNG（Portable Network Graphics） |
| pnm | image/x-portable-anymap | |
| pnz | image/png | |
| pot | application/vnd.ms-powerpoint | |
| ppm | image/x-portable-pixmap | |
| pps | application/vnd.ms-powerpoint | |
| ppt | application/mspowerpoint | Power Point |
| ppt | application/ppt | Power Point |
| ppt | application/vnd.ms-powerpoint | |
| pqf | application/x-cprplayer | |
| pqi | application/cprplayer | |
| prc | application/x-prc | |
| proxy | application/x-ns-proxy-autoconfig | |
| ps | application/postscript | EPS（Encapsulated Postscript Format） |
| ps | application/postscript | Postscript |
| ptlk | application/listenup | |
| pub | application/x-mspublisher | |
| pvx | video/x-pv-pvx | |
| qcp | audio/vnd.qcelp | |
| qt | video/quicktime | Apple QuickTime Movie |
| qti | image/x-quicktime | |
| qtif | image/x-quicktime | |
| r3t | text/vnd.rn-realtext3d | |
| ra | audio/x-pn-realaudio | |
| ram | audio/x-pn-realaudio | RealAudio Meta File |
| rar | application/x-rar-compressed | |
| ras | image/x-cmu-raster | |
| rdf | application/xml | |
| rf | image/vnd.rn-realflash | |
| rgb | image/x-rgb | |
| rle | image/x-bmp | BMP/Windows Bitmap |
| rle | image/x-ms-bmp | BMP/Windows Bitmap |
| rlf | application/x-richlink | |
| rm | audio/x-pn-realaudio | RealMedia |
| rnx | application/vnd.rn-realplayer | |
| roff | application/x-troff | |
| rp | image/vnd.rn-realpix | |
| rpm | audio/x-pn-realaudio-plugin | Real Audio |
| rpm | audio/x-pn-RealAudio-plugin | |
| rt | text/vnd.rn-realtext | |
| rte | x-lml/x-gps | |
| rtf | application/rtf | Rich Text Format |
| rtg | application/metastream | |
| rtx | text/richtext | |
| rv | video/vnd.rn-realvideo | |
| rwc | application/x-rogerwilco | |
| s3m | audio/x-mod | |
| s3z | audio/x-mod | |
| sca | application/x-supercard | |
| scd | application/x-msschedule | |
| sdf | application/e-score | |
| sea | application/x-stuffit | |
| sgm | text/sgml | SGML（Standard Generalized Markup Language） |
| sgml | text/sgml | SGML（Standard Generalized Markup Language） |
| sh | application/x-sh | shar（Shell Archiver） |
| sh | application/x-shar | shar（Shell Archiver） |
| shar | application/x-sh | shar（Shell Archiver） |
| shar | application/x-shar | shar（Shell Archiver） |
| shw | application/presentations | |
| sit | application/x-stuffit | sit（StuffIt） |
| skd | application/x-Koan | |
| skm | application/x-Koan | |
| skp | application/x-Koan | |
| skt | application/x-Koan | |
| slc | application/x-salsa | |
| smd | audio/x-smd | |
| smf | audio/midi | MIDI |
| smf | audio/x-midi | MIDI |
| smi | application/smil | |
| smp | application/studiom | |
| smz | audio/x-smd | |
| snd | audio/basic | Next SND |
| spc | text/x-speech | |
| spl | application/futuresplash | Flash 1 & Future Splash Animator |
| spr | application/x-sprite | |
| sprite | application/x-sprite | |
| spt | application/x-spt | |
| src | application/x-wais-source | |
| svf | image/vnd | |
| svg | image/svg+xml | |
| svh | image/svh | |
| svr | x-world/x-svr | |
| swa | application/x-director | Shockwave Audio |
| swf | application/x-shockwave-flash | Flash 2 |
| swfl | application/x-shockwave-flash | |
| sxc | application/vnd.sun.xml.calc | |
| sxi | application/vnd.sun.xml.impress | |
| sxw | application/vnd.sun.xml.writer | |
| t | application/x-troff | |
| tab | text/tab-separated-values | TSV／タブ区切り形式 |
| tad | application/octet-stream | |
| talk | text/x-speech | |
| tar | application/x-tar | tar（Tape Archiver） |
| taz | application/x-tar | |
| tbp | application/x-timbuktu | |
| tbt | application/timbuktu | |
| tcl | application/x-tcl | |
| tex | application/x-tex | TeX |
| tex | application/x-latex | LaTeX |
| texi | application/x-texinfo | |
| texinfo | application/x-texinfo | |
| tga | image/x-targa | TGA（Targa）、VDA（Video Display Adapter） |
| tgz | application/x-tar | |
| tif | image/tiff | TIFF（Tag Image File Format） |
| tif | image/x-tiff | TIFF（Tag Image File Format） |
| tiff | image/tiff | TIFF（Tag Image File Format） |
| tiff | image/x-tiff | TIFF（Tag Image File Format） |
| tki | application/x-tkined | |
| tkined | application/x-tkined | |
| toc | application/toc | |
| tpic | image/x-targa | TGA（Targa）、VDA（Video Display Adapter） |
| tr | application/x-troff | |
| trc | application/x-toruca | |
| trk | x-lml/x-gps | |
| trm | application/x-msterminal | |
| tsi | audio/tsplayer | |
| tsv | text/tab-separated-values | TSV／タブ区切り形式 |
| ttf | application/octet-stream | |
| ttz | application/t-time | |
| txt | text/plain | Text ファイル |
| uu | x-uuencode | |
| uue | x-uuencode | |
| vbs | text/vbscript | VBScript |
| vcf | text/x-vcard | |
| vcs | text/x-vcalendar | |
| vda | image/x-targa | TGA（Targa）、VDA（Video Display Adapter） |
| vdb | application/activexdocument | Active X Document |
| vdo | video/vdo | VDOLive |
| viv | video/vnd.vivo | VivoActive |
| viv | video/vivo | |
| vivo | video/vnd.vivo | VivoActive |
| vmi | application/x-dreamcast-vms-info | |
| vms | application/x-dreamcast-vms | |
| vox | audio/voxware | |
| vqe | audio/x-twinvq-plugin | TwinVQ |
| vqe | audio/x-twinvq | TwinVQ |
| vqf | audio/x-twinvq | Twin VQ |
| vql | audio/x-twinvq-plugin | TwinVQ |
| vql | audio/x-twinvq | TwinVQ |
| vre | x-world/x-vream | |
| vrt | x-world/x-vrt | |
| vrw | x-world/x-vream | |
| vst | image/x-targa | TGA（Targa）、VDA（Video Display Adapter） |
| vts | workbook/formulaone | |
| wav | audio/wav | WAVE |
| wav | audio/x-wav | WAVE |
| wax | audio/x-ms-wax | |
| wbmp | image/vnd.wap.wbmp | |
| wcm | application/vnd.ms-works | |
| wdb | application/vnd.ms-works | |
| wi | image/wavelet | |
| wks | application/vnd.ms-works | |
| wm | video/x-ms-asf | |
| wma | audio/x-ms-wma | |
| wmf | application/x-msmetafile | |
| wml | text/vnd.wap.wml | |
| wmlc | application/vnd.wap.wmlc | |
| wmls | text/vnd.wap.wmlscript | |
| wmv | video/x-ms-wmv | |
| wmx | video/x-ms-wmx | |
| wpng | image/x-up-wpng | |
| wps | application/vnd.ms-works | |
| wpt | x-lml/x-gps | |
| wri | application/x-mswrite | |
| wrl | model/vrml | VRML |
| wrl | x-world/x-vrml | VRML |
| wrz | x-world/x-vrml | |
| wv | video/wavelet | |
| wvx | video/x-ms-wvx | |
| wxl | application/x-wxl | |
| xaml | application/xaml+xml | |
| xbm | image/x-bitmap | xbm（X Bitmap format） |
| xbm | image/x-xbitmap | |
| xdm | application/x-xdma | StreamWorks |
| xdma | application/x-xdma | StreamWorks |
| xdw | application/vnd.fujixerox.docuworks | |
| xhtml | application/xhtml+xml | |
| xla | application/vnd.ms-excel | |
| xlc | application/x-excel | |
| xlc | application/vnd.ms-excel | |
| xll | application/x-excel | |
| xlm | application/x-excel | |
| xlm | application/vnd.ms-excel | |
| xls | application/x-excel | |
| xls | application/vnd.ms-excel | |
| xlt | application/vnd.ms-excel | |
| xlw | application/x-excel | |
| xlw | application/vnd.ms-excel | |
| xm | audio/x-mod | |
| xmf0 | audio/xmf0 | |
| xmf1 | audio/xmf1 | |
| xml | text/xml | XML(eXtended Markup Language) |
| xmz | audio/x-mod | |
| xpi | application/x-xpinstall | |
| xpm | image/x-xpixmap | xpm（X Pixmap） |
| xsl | text/xml | |
| xul | text/xul | |
| xwd | image/x-xwindowdump | |
| xyz | chemical/x-xyz | |
| yz1 | application/x-yz1 | |
| z | application/x-compress | Compress |
| z | x-compress | |
| zac | application/x-zaurus-zac | |
| zip | application/zip | ZIP（Zigzag In line Package） |
| zip | application/x-zip-compressed | ZIP（Zigzag In line Package）
|