The Fossil /doc page uses filename suffixes and the following table to guess at the appropriate mimetype for each document.
| Suffix | Mimetype |
|---|---|
| ai | application/postscript |
| aif | audio/x-aiff |
| aifc | audio/x-aiff |
| aiff | audio/x-aiff |
| arj | application/x-arj-compressed |
| asc | text/plain |
| asf | video/x-ms-asf |
| asx | video/x-ms-asx |
| au | audio/ulaw |
| avi | video/x-msvideo |
| bat | application/x-msdos-program |
| bcpio | application/x-bcpio |
| bin | application/octet-stream |
| bmp | image/bmp |
| bz2 | application/x-bzip2 |
| bzip | application/x-bzip |
| c | text/plain |
| cc | text/plain |
| ccad | application/clariscad |
| cdf | application/x-netcdf |
| class | application/octet-stream |
| cod | application/vnd.rim.cod |
| com | application/x-msdos-program |
| cpio | application/x-cpio |
| cpt | application/mac-compactpro |
| cs | text/plain |
| csh | application/x-csh |
| css | text/css |
| csv | text/csv |
| dcr | application/x-director |
| deb | application/x-debian-package |
| dib | image/bmp |
| dir | application/x-director |
| dl | video/dl |
| dms | application/octet-stream |
| doc | application/msword |
| docx | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| dot | application/msword |
| dotx | application/vnd.openxmlformats-officedocument.wordprocessingml.template |
| drw | application/drafting |
| dvi | application/x-dvi |
| dwg | application/acad |
| dxf | application/dxf |
| dxr | application/x-director |
| eps | application/postscript |
| etx | text/x-setext |
| exe | application/octet-stream |
| ez | application/andrew-inset |
| f | text/plain |
| f90 | text/plain |
| fli | video/fli |
| flv | video/flv |
| gif | image/gif |
| gl | video/gl |
| gtar | application/x-gtar |
| gz | application/x-gzip |
| h | text/plain |
| hdf | application/x-hdf |
| hh | text/plain |
| hqx | application/mac-binhex40 |
| htm | text/html |
| html | text/html |
| ice | x-conference/x-cooltalk |
| ico | image/vnd.microsoft.icon |
| ief | image/ief |
| iges | model/iges |
| igs | model/iges |
| ips | application/x-ipscript |
| ipx | application/x-ipix |
| jad | text/vnd.sun.j2me.app-descriptor |
| jar | application/java-archive |
| jpe | image/jpeg |
| jpeg | image/jpeg |
| jpg | image/jpeg |
| js | application/x-javascript |
| kar | audio/midi |
| latex | application/x-latex |
| lha | application/octet-stream |
| lsp | application/x-lisp |
| lzh | application/octet-stream |
| m | text/plain |
| m3u | audio/x-mpegurl |
| man | text/plain |
| markdown | text/x-markdown |
| md | text/x-markdown |
| me | application/x-troff-me |
| mesh | model/mesh |
| mid | audio/midi |
| midi | audio/midi |
| mif | application/x-mif |
| mime | www/mime |
| mkd | text/x-markdown |
| mov | video/quicktime |
| movie | video/x-sgi-movie |
| mp2 | audio/mpeg |
| mp3 | audio/mpeg |
| mp4 | video/mp4 |
| mpe | video/mpeg |
| mpeg | video/mpeg |
| mpg | video/mpeg |
| mpga | audio/mpeg |
| ms | application/x-troff-ms |
| msh | model/mesh |
| n | text/plain |
| nc | application/x-netcdf |
| oda | application/oda |
| odp | application/vnd.oasis.opendocument.presentation |
| ods | application/vnd.oasis.opendocument.spreadsheet |
| odt | application/vnd.oasis.opendocument.text |
| ogg | application/ogg |
| ogm | application/ogg |
| pbm | image/x-portable-bitmap |
| pdb | chemical/x-pdb |
| application/pdf | |
| pgm | image/x-portable-graymap |
| pgn | application/x-chess-pgn |
| pgp | application/pgp |
| pl | application/x-perl |
| pm | application/x-perl |
| png | image/png |
| pnm | image/x-portable-anymap |
| pot | application/mspowerpoint |
| potx | application/vnd.openxmlformats-officedocument.presentationml.template |
| ppm | image/x-portable-pixmap |
| pps | application/mspowerpoint |
| ppsx | application/vnd.openxmlformats-officedocument.presentationml.slideshow |
| ppt | application/mspowerpoint |
| pptx | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| ppz | application/mspowerpoint |
| pre | application/x-freelance |
| prt | application/pro_eng |
| ps | application/postscript |
| qt | video/quicktime |
| ra | audio/x-realaudio |
| ram | audio/x-pn-realaudio |
| rar | application/x-rar-compressed |
| ras | image/cmu-raster |
| rgb | image/x-rgb |
| rm | audio/x-pn-realaudio |
| roff | application/x-troff |
| rpm | audio/x-pn-realaudio-plugin |
| rtf | text/rtf |
| rtx | text/richtext |
| scm | application/x-lotusscreencam |
| set | application/set |
| sgm | text/sgml |
| sgml | text/sgml |
| sh | application/x-sh |
| shar | application/x-shar |
| silo | model/mesh |
| sit | application/x-stuffit |
| skd | application/x-koan |
| skm | application/x-koan |
| skp | application/x-koan |
| skt | application/x-koan |
| smi | application/smil |
| smil | application/smil |
| snd | audio/basic |
| sol | application/solids |
| spl | application/x-futuresplash |
| src | application/x-wais-source |
| step | application/STEP |
| stl | application/SLA |
| stp | application/STEP |
| sv4cpio | application/x-sv4cpio |
| sv4crc | application/x-sv4crc |
| svg | image/svg+xml |
| swf | application/x-shockwave-flash |
| t | application/x-troff |
| tar | application/x-tar |
| tcl | application/x-tcl |
| tex | application/x-tex |
| texi | application/x-texinfo |
| texinfo | application/x-texinfo |
| tgz | application/x-tar-gz |
| th1 | application/x-th1 |
| tif | image/tiff |
| tiff | image/tiff |
| tr | application/x-troff |
| tsi | audio/TSP-audio |
| tsp | application/dsptype |
| tsv | text/tab-separated-values |
| txt | text/plain |
| unv | application/i-deas |
| ustar | application/x-ustar |
| vb | text/plain |
| vcd | application/x-cdlink |
| vda | application/vda |
| viv | video/vnd.vivo |
| vivo | video/vnd.vivo |
| vrml | model/vrml |
| wav | audio/x-wav |
| wax | audio/x-ms-wax |
| wiki | text/x-fossil-wiki |
| wma | audio/x-ms-wma |
| wmv | video/x-ms-wmv |
| wmx | video/x-ms-wmx |
| wrl | model/vrml |
| wvx | video/x-ms-wvx |
| xbm | image/x-xbitmap |
| xlc | application/vnd.ms-excel |
| xll | application/vnd.ms-excel |
| xlm | application/vnd.ms-excel |
| xls | application/vnd.ms-excel |
| xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| xlw | application/vnd.ms-excel |
| xml | text/xml |
| xpm | image/x-xpixmap |
| xwd | image/x-xwindowdump |
| xyz | chemical/x-pdb |
| zip | application/zip |