File-extension groups

Filearr classifies every catalogued file by the File Extension Similarity Taxonomy — a two-level tree derived from the file extension:

• file_category — the coarse parent (image, audio, video, document, three-d-cad, development, archive, system, other). Each category carries an extractor (image/audio/video/document/model3d or none) — the extraction pipeline it routes to. file_category is the authoritative coarse bucket.
• file_group — the finer child (37 groups). It both subdivides its category (RAW vs. raster photos; lossy vs. lossless audio) and gives signal to the otherwise-opaque other/system files (archives, installers, source code, fonts, configs, subtitles, …).

The taxonomy is DB-backed and editable at runtime (see the CRUD API below); this page documents the shipped DEFAULT — a live install may have edited it. file_category and file_group are computed together from the extension, so a .wav is file_category=audio / file_group=audio-lossless and a .zip is file_category=archive / file_group=archive.

Filtering by group

file_group and file_category are Meilisearch filters and facets. Pass one or more file_group (or file_category) values to the search API (repeatable = OR):

GET /api/v1/search?q=&file_group=raw-photo
GET /api/v1/search?q=invoice&file_group=pdf&file_group=document-office

The machine-readable DEFAULT registry (this table, as JSON) is served from:

GET /api/v1/system/file-groups

The live, possibly-edited taxonomy tree (categories → groups → extensions) and its admin CRUD (create/update/delete categories & groups, add/remove/reparent extensions) live under:

GET    /api/v1/taxonomy
POST   /api/v1/taxonomy/categories        PATCH/DELETE .../categories/{key}
POST   /api/v1/taxonomy/groups            PATCH/DELETE .../groups/{key}
POST   /api/v1/taxonomy/groups/{key}/extensions   DELETE .../extensions/{ext}

After deploying a group-map change

file_group is projected onto each search document at index time. After changing the extension map (or on first rollout), run a rebuild-index (POST /api/v1/system/rebuild-index) so existing documents pick up the new file_group value. Newly scanned/updated items get it automatically.

Categories

The coarse parent layer. Each category rolls up one or more groups and declares the extraction extractor it routes to (or none).

Category	Label	Extractor	Groups
image	Image	image	raster-photo, raw-photo, vector-image, layered-image, animated-image
audio	Audio	audio	audio-lossy, audio-lossless, audiobook, audio-project, playlist
video	Video & subtitle	video	video, subtitle
document	Document	document	document-text, document-office, pdf, presentation, spreadsheet, ebook, comic, markup
three-d-cad	3D & CAD	model3d	3d-model, cad
development	Development & data	—	source-code, script, web-asset, notebook, config-data
archive	Archive & image	—	archive, disk-image, package-installer
system	System & data files	—	font, database, executable-binary, email, certificate-key, log
other	Other / unknown	—	other

Groups

raster-photo — Raster / photo

Parent file_category: image
Extensions (57): .avif, .avifs, .bmp, .bpg, .cur, .dds, .dib, .exr, .fit, .fits, .flif, .hdr, .heic, .heics, .heif, .hif, .icns, .ico, .iff, .ilbm, .j2k, .jfif, .jif, .jng, .jp2, .jpc, .jpe, .jpeg, .jpf, .jpg, .jpm, .jpx, .jxl, .mdi, .pam, .pbm, .pct, .pcx, .pgm, .pict, .png, .pnm, .ppm, .qoi, .qtif, .ras, .rgb, .sgi, .targa, .tga, .tif, .tiff, .wbmp, .webp, .xbm, .xpm, .xwd

Pixel (bitmap) images — photographs, screenshots, web graphics and their HDR/high-bit-depth cousins. The everyday image formats.

raw-photo — Camera RAW

Parent file_category: image
Extensions (40): .3fr, .ari, .arw, .bay, .cap, .cr2, .cr3, .crw, .cs1, .dcm, .dcr, .dcs, .dng, .drf, .eip, .erf, .fff, .gpr, .iiq, .k25, .kc2, .kdc, .mdc, .mef, .mos, .mrw, .nef, .nksc, .nrw, .orf, .pef, .raf, .raw, .rw2, .rwl, .rwz, .sr2, .srf, .srw, .x3f

Unprocessed camera sensor data (mostly one proprietary format per manufacturer) plus the open Adobe DNG. Needs a RAW developer, not a plain image viewer.

Notes

dcm (DICOM medical imaging) groups here rather than under raster-photo: like camera RAW it is instrument capture data with an embedded metadata header that a plain image viewer will not open.

vector-image — Vector image

Parent file_category: image
Extensions (24): .ai, .cdr, .cgm, .cmx, .dia, .drawio, .drw, .emf, .emz, .eps, .epsf, .epsi, .fig, .fodg, .hpgl, .odg, .plt, .svg, .svgz, .vsd, .vsdx, .vss, .wmf, .wmz

Resolution-independent geometry (paths/shapes) rather than pixels — illustration, logos, diagrams.

Notes

cdr is CorelDRAW here (not a macOS disc image); eps is the vector Encapsulated PostScript (raster print PostScript ps is grouped under pdf).

layered-image — Layered / authoring image

Parent file_category: image
Extensions (20): .afdesign, .afphoto, .clip, .cpt, .csp, .idml, .indd, .kra, .ora, .pdd, .pdn, .procreate, .psb, .psd, .pxm, .sai, .sai2, .sketch, .tvpp, .xcf

Editable multi-layer image project documents from raster editors (Photoshop, GIMP, Krita, Affinity, …) — not a flattened export.

animated-image — Animated image

Parent file_category: image
Extensions (7): .ani, .apng, .flc, .fli, .gif, .gifv, .mng

Short looping animations delivered as an image rather than a video container.

Notes

gif is classified here (its canonical animated use) rather than under raster-photo; APNG/animated-WebP share the png/webp extensions and so cannot be split out by extension alone.

video — Video

Parent file_category: video
Extensions (80): .264, .265, .3g2, .3gp, .3gpp, .amv, .asf, .av1, .avc, .avi, .braw, .bvr, .dav, .divx, .dv, .dvr, .dvr-ms, .f4v, .flv, .fmp4, .fmpi, .fxm, .g64, .g64x, .gmp4, .gxf, .h264, .h265, .h26l, .h3r, .hevc, .hm4, .ifo, .m1v, .m2t, .m2ts, .m2v, .m4s, .m4v, .mcg, .mkv, .mod, .moov, .mov, .movie, .mp4, .mpe, .mpeg, .mpg, .mpv, .mts, .mxf, .n3r, .nsv, .ogm, .ogv, .qt, .qtvr, .r3d, .rcd, .rm, .rmj, .rmm, .rms, .rmvb, .rmx, .roq, .rv, .rvx, .swf, .tod, .ts, .tts, .viv, .vivo, .vob, .webm, .wmv, .wtv, .y4m

Moving-image containers and streams (movies, clips, recordings).

Notes

ts/mts are MPEG transport streams here, not TypeScript — tsx/cts still classify as source code. CCTV/NVR/dashcam recorder containers (bvr, g64/g64x, dvr, rcd, …) are video too, but most cannot be probed — see the unsupported gate in tasks/extract.py. Pelco's pef is deliberately NOT claimed here (Pentax RAW already owns that extension), and the generic blk/pic/sec recorder suffixes are left unmapped rather than handed to one CCTV vendor (pic is a long-established raster-image extension).

audio-lossy — Lossy audio

Parent file_category: audio
Extensions (33): .3ga, .aa3, .aac, .ac3, .amr, .at3, .awb, .dts, .eac3, .f4a, .gsm, .m4a, .m4r, .mka, .mp1, .mp2, .mp3, .mpa, .mpc, .mpga, .oga, .ogg, .ogx, .oma, .opus, .qcp, .ra, .ram, .rax, .spx, .vqf, .weba, .wma

Perceptually compressed audio (MP3/AAC/Ogg/Opus/…) — smaller files, irreversible quality loss.

audio-lossless — Lossless / PCM audio

Parent file_category: audio
Extensions (29): .aif, .aifc, .aiff, .alac, .ape, .au, .bwf, .caf, .dff, .dsd, .dsf, .flac, .l16, .la, .mlp, .ofr, .ofs, .pcm, .rf64, .shn, .snd, .tak, .tta, .voc, .w64, .wav, .wave, .wv, .wvc

Losslessly compressed or uncompressed PCM/DSD audio (FLAC/ALAC/WAV/AIFF/APE/…) — bit-exact reconstruction.

Notes

Raw PCM sample files (wav/aiff) group here as lossless audio (file_category audio), alongside their sampler cousins in audio-project.

audiobook — Audiobook

Parent file_category: audio
Extensions (5): .aa, .aax, .aaxc, .f4b, .m4b

Chapterised spoken-word audiobook containers (M4B and Audible formats).

audio-project — Audio project, sampler & instrument

Parent file_category: audio
Extensions (73): .669, .adg, .adv, .agr, .akp, .alp, .als, .aup, .aup3, .aupreset, .bwproject, .cpr, .cwb, .cwp, .dawproject, .dls, .exs, .ffp, .flp, .fxb, .fxp, .gig, .h2song, .it, .kar, .kit, .logic, .logicx, .m15, .med, .mid, .midi, .minipsf, .mmp, .mmpz, .mo3, .mtm, .nkc, .nki, .nkm, .nksf, .nksn, .nkx, .npr, .pat, .psflib, .ptf, .pts, .ptx, .rcy, .reapeaks, .rex, .rmi, .rns, .rpp, .rx2, .s3m, .ses, .sesx, .sf2, .sf3, .sfark, .sfz, .sid, .sng, .stm, .sxt, .syx, .ult, .uni, .vstpreset, .xi, .xmf

Digital-audio-workstation project/session files and sampler / synth instrument, patch, sound-font and loop formats — production assets, not finished audio.

Notes

ptx is a Pro Tools session here (not Pentax RAW). MIDI (mid/midi/kar/rmi/xmf) and the tracker-module family group here rather than under audio-lossy/audio-lossless: both are instrument and sequence DATA a synth must render, not recorded audio. The tracker cluster conspicuously lacks mod — video already claims it (JVC camcorder) — and amf (3D-model) / psm (CAD) have the same pre-existing collision shape. psf is left unmapped on purpose: Linux console font vs PlayStation Sound Format is a genuine coin flip, whereas minipsf/psflib are unambiguous and are mapped.

playlist — Playlist

Parent file_category: audio
Extensions (17): .aimppl, .asx, .b4s, .cue, .fpl, .kpl, .m3u, .m3u8, .mpls, .pla, .pls, .wax, .wmx, .wpl, .wvx, .xspf, .zpl

Ordered references to media tracks/clips (and cue sheets) — the playlist itself carries no audio/video payload.

subtitle — Subtitle / caption

Parent file_category: video
Extensions (21): .aqt, .ass, .dfxp, .idx, .jss, .lrc, .mcc, .mpsub, .pjs, .rt, .sami, .sbv, .scc, .smi, .srt, .ssa, .sub, .sup, .ttml, .usf, .vtt

Timed-text subtitle, caption and synced-lyric sidecar formats.

Notes

stl is claimed by 3d-model (stereolithography); the EBU STL subtitle format is therefore not represented by that extension here.

document-text — Plain text document

Parent file_category: document
Extensions (11): .1st, .ans, .diz, .etx, .me, .nfo, .pgn, .readme, .text, .txt, .wtx

Human-readable plain-text documents with no rich formatting model.

document-office — Word-processor / office document

Parent file_category: document
Extensions (30): .602, .abw, .cwk, .doc, .docm, .docx, .dot, .dotm, .dotx, .fodt, .gdoc, .hwp, .hwpx, .kwd, .lwp, .mcw, .odt, .ott, .pages, .rtf, .sdw, .stw, .sxw, .uof, .uot, .wpd, .wps, .wpt, .wri, .zabw

Rich word-processor documents (Word/OpenDocument/Pages/WordPerfect/…) with styles, layout and embedded objects.

pdf — PDF & page description

Parent file_category: document
Extensions (10): .dvi, .fdf, .oxps, .pcl, .pdf, .prn, .ps, .xdp, .xfdf, .xps

Fixed-layout page-description documents — PDF and the PostScript / XPS print family.

presentation — Presentation

Parent file_category: document
Extensions (21): .fodp, .gslides, .odp, .otp, .pot, .potm, .potx, .pps, .ppsm, .ppsx, .ppt, .pptm, .pptx, .prz, .sdd, .shw, .sldm, .sldx, .sti, .sxi, .uop

Slide decks (PowerPoint / Keynote / Impress / Google Slides).

Notes

Slide decks group here under file_category document.

spreadsheet — Spreadsheet / tabular

Parent file_category: document
Extensions (34): .123, .csv, .dif, .et, .fods, .gnumeric, .gsheet, .numbers, .ods, .ots, .qpw, .slk, .stc, .sxc, .sylk, .tab, .tsv, .uos, .wb2, .wk1, .wk3, .wk4, .wks, .wq1, .xla, .xlam, .xls, .xlsb, .xlsm, .xlsx, .xlt, .xltm, .xltx, .xlw

Spreadsheet workbooks and delimited tabular data (CSV/TSV).

ebook — E-book

Parent file_category: document
Extensions (29): .acsm, .azw, .azw3, .azw4, .ceb, .cebx, .chm, .djv, .djvu, .epub, .fb2, .fb2z, .fbz, .ibooks, .kf8, .kfx, .kpf, .lit, .lrf, .lrx, .mobi, .ncx, .oeb, .opf, .pdb, .prc, .snb, .tcr, .tpz

Reflowable and fixed e-book formats (EPUB, Kindle, FictionBook, DjVu, …).

comic — Comic archive

Parent file_category: document
Extensions (7): .acbf, .cb7, .cba, .cbr, .cbt, .cbw, .cbz

Comic-book archives (a page-image bundle in a ZIP/RAR/7z/tar wrapper).

markup — Markup & typesetting source

Parent file_category: document
Extensions (65): .adoc, .asciidoc, .atom, .bib, .bst, .cls, .creole, .dita, .docbook, .dtd, .dtx, .ejs, .erb, .haml, .handlebars, .hbs, .htm, .html, .j2, .jade, .jinja, .jinja2, .latex, .liquid, .ltx, .man, .markdown, .md, .mdown, .mdwn, .mdx, .mediawiki, .mkd, .mkdn, .mustache, .njk, .nroff, .nunjucks, .org, .pod, .pug, .rdoc, .rng, .roff, .rss, .rst, .sgml, .shtml, .slim, .sty, .tex, .texi, .texinfo, .textile, .troff, .twig, .typ, .wiki, .xaml, .xht, .xhtml, .xml, .xsd, .xsl, .xslt

Human-authored markup, template and typesetting SOURCE — Markdown, HTML/XML, reStructuredText, AsciiDoc, LaTeX, and friends.

Notes

xml is grouped here as a markup language rather than under config-data.

3d-model — 3D model / mesh

Parent file_category: three-d-cad
Extensions (54): .3ds, .3mf, .abc, .amf, .blend, .blend1, .c4d, .chitubox, .collada, .ctb, .dae, .e57, .fbx, .gco, .gcode, .glb, .gltf, .gltf2, .ksplat, .las, .laz, .lwo, .lws, .lxl, .lxo, .ma, .max, .mb, .mesh, .mmd, .mqo, .mtl, .obj, .off, .pcd, .ply, .pmd, .pmx, .qb, .splat, .stl, .usd, .usda, .usdc, .usdz, .vox, .vrml, .wrl, .x3d, .x3db, .x3dv, .xyz, .zpr, .ztl

3D meshes, scenes and printable models (STL/OBJ/glTF/FBX/3MF/…).

Notes

obj is the Wavefront 3D mesh here (not a compiled object file); stl is stereolithography (not EBU subtitle).

cad — CAD & engineering

Parent file_category: three-d-cad
Extensions (58): .3dm, .3dxml, .brd, .catdrawing, .catpart, .catproduct, .cnc, .dgn, .drl, .dwf, .dwfx, .dwg, .dwt, .dxf, .emn, .f3d, .f3z, .fcstd, .gbr, .iam, .idw, .ifc, .ifcxml, .ifczip, .iges, .igs, .ipn, .ipt, .jt, .kicad_pcb, .kicad_sch, .mcd, .model, .nc, .neu, .par, .pln, .prt, .psm, .rfa, .rte, .rvt, .sab, .sat, .scad, .scdoc, .sch, .skp, .sldasm, .slddrw, .sldprt, .step, .stp, .stpz, .tap, .vwx, .x_b, .x_t

Computer-aided-design drawings and engineering interchange formats (DWG/DXF/STEP/IGES/native part & assembly files).

font — Font

Parent file_category: system
Extensions (31): .afm, .bdf, .cff, .dfont, .eot, .fnt, .fon, .fond, .fot, .gf, .glyphs, .glyphspackage, .otc, .otf, .pcf, .pf2, .pfa, .pfb, .pfm, .pk, .sfd, .snf, .suit, .t1, .tfm, .ttc, .ttf, .ufo, .vfb, .woff, .woff2

Digital typefaces and font-editor sources (TrueType/OpenType/WOFF/…).

source-code — Source code

Parent file_category: development
Extensions (150): .ada, .adb, .ads, .asm, .au3, .bas, .c, .c++, .cairo, .cbl, .cc, .cjs, .cl, .clj, .cljc, .cljs, .cob, .cobol, .coffee, .comp, .cpp, .cpy, .cr, .cs, .csx, .cts, .cu, .cuh, .cxx, .d, .dart, .diff, .dpr, .edn, .eex, .el, .elm, .erl, .ex, .f, .f03, .f08, .f90, .f95, .for, .frag, .fs, .fsi, .fsscript, .fsx, .ftn, .gd, .gemspec, .geom, .glsl, .go, .groovy, .gvy, .gy, .h, .h++, .heex, .hh, .hlsl, .hpp, .hrl, .hs, .hx, .hxml, .hxx, .i, .inc, .inl, .ino, .ipp, .jav, .java, .jl, .js, .jsx, .kt, .ktm, .kts, .leex, .lhs, .lisp, .litcoffee, .lsp, .lua, .m, .metal, .mjs, .ml, .mli, .mm, .move, .nasm, .nim, .nims, .pas, .patch, .php, .php3, .php4, .php5, .phps, .phtml, .pl, .pm, .pp, .purs, .pxd, .pxi, .py, .pyi, .pyw, .pyx, .qml, .r, .rake, .rb, .rbw, .re, .rei, .rkt, .rpy, .rs, .s, .sc, .scala, .scm, .sol, .ss, .sv, .svh, .swift, .t, .tcc, .tcl, .tpp, .tsx, .v, .vala, .vapi, .vb, .vert, .vhdl, .wat, .wgsl, .zig

Programming-language source files across the common language ecosystems.

Notes

m is grouped as source (Objective-C / MATLAB share it); sql is grouped under database.

script — Shell / automation script

Parent file_category: development
Extensions (36): .ahk, .ahk2, .applescript, .ash, .awk, .bash, .bat, .btm, .cgi, .cmd, .command, .csh, .dash, .elv, .exp, .expect, .fish, .hta, .ksh, .nu, .ps1, .ps1xml, .psd1, .psm1, .scpt, .scptd, .sed, .sh, .tcsh, .tool, .vbe, .vbs, .wsf, .wsh, .xonsh, .zsh

Shell, batch and automation scripts (Bash/PowerShell/Batch/AppleScript/…).

web-asset — Web asset

Parent file_category: development
Extensions (14): .astro, .css, .importmap, .less, .pcss, .postcss, .sass, .scss, .styl, .stylus, .svelte, .vue, .wasm, .webmanifest

Front-end web build assets — stylesheets and WebAssembly.

Notes

HTML is grouped under markup; web fonts under font.

notebook — Computational notebook

Parent file_category: development
Extensions (8): .ipynb, .livemd, .nb, .qmd, .rmarkdown, .rmd, .rnw, .zpln

Literate computational notebooks (Jupyter, R Markdown, Quarto).

config-data — Config & structured data

Parent file_category: development
Extensions (77): .avsc, .babelrc, .bazel, .bzl, .capnp, .cfg, .cmake, .cnf, .conf, .config, .containerfile, .csproj, .desktop, .dhall, .dockerfile, .dotenv, .editorconfig, .env, .eslintrc, .fbs, .fsproj, .gcrd, .geojson, .gql, .gradle, .graphql, .hcl, .ics, .ini, .json, .json5, .jsonc, .jsonl, .jsonnet, .kdl, .libsonnet, .lock, .mak, .mk, .ndjson, .ninja, .nix, .npmrc, .pbxproj, .plist, .prefs, .prettierrc, .pri, .prop, .properties, .proto, .rc, .reg, .resx, .ron, .sbt, .service, .sln, .srr, .srs, .tf, .tfstate, .tfvars, .thrift, .toml, .topojson, .torrent, .unit, .vbproj, .vcf, .vcs, .vct, .vcxproj, .xcconfig, .yaml, .yarnrc, .yml

Machine-readable configuration and structured-data / serialization files (JSON/YAML/TOML/INI/env/infrastructure-as-code/…).

database — Database & dataset

Parent file_category: system
Extensions (54): .accdb, .accde, .arrow, .avro, .bson, .cdf, .db, .db3, .dbf, .ddl, .dta, .dump, .fdb, .feather, .fmp12, .fp7, .frm, .gdb, .h5, .hdf5, .ibd, .kdb, .kdbx, .ldf, .mdb, .mde, .mdf, .myd, .myi, .ndf, .npy, .npz, .nsf, .ntf, .odb, .orc, .parquet, .pickle, .pkl, .por, .rdata, .rds, .realm, .s3db, .sas7bdat, .sav, .sdf, .sl3, .sql, .sqlite, .sqlite3, .sqlitedb, .wdb, .xpt

On-disk databases, database dumps, and columnar/analytics dataset files (SQLite/Access/SQL dumps/Parquet/Avro/…).

Notes

mdf is a SQL Server data file here (not a disc image); nsf is a Lotus Notes database (not e-mail).

archive — Archive / compressed

Parent file_category: archive
Extensions (74): .7z, .ace, .afa, .alz, .ar, .arc, .arj, .b1, .ba, .br, .bz2, .cab, .cpio, .dar, .dgc, .ear, .gca, .gcf, .gz, .gzip, .hqx, .jar, .kgb, .lha, .lrz, .lz, .lz4, .lzh, .lzma, .lzo, .lzop, .pak, .paq, .pea, .pk3, .pk4, .r00, .r01, .rar, .rz, .s7z, .sar, .sea, .shar, .sit, .sitx, .sz, .tar, .taz, .tb2, .tbz, .tbz2, .tgz, .tlz, .tlz4, .tlzma, .tlzo, .txz, .tzst, .uc2, .uha, .vpk, .war, .xar, .xz, .yz1, .z, .zip, .zipx, .zoo, .zpaq, .zst, .zstd, .zz

General-purpose archive and compression containers (ZIP/RAR/7z/tar/gz/zst/…), including multi-part tar.* bundles and generic Java archives.

disk-image — Disk / filesystem image

Parent file_category: archive
Extensions (48): .adf, .adz, .aff, .b5t, .b6t, .ccd, .chd, .cif, .cso, .d64, .daa, .dmg, .dsk, .e01, .esd, .fdi, .ffu, .gcm, .gho, .ghs, .gi, .hdd, .img, .iso, .isz, .mds, .nrg, .nsp, .ova, .ovf, .qcow, .qcow2, .qed, .sparsebundle, .sparseimage, .swm, .tib, .toast, .udf, .uif, .vdi, .vfd, .vhd, .vhdx, .vmdk, .wbfs, .wim, .xci

Whole-disc, filesystem and virtual-machine disk images (ISO/DMG/VHD/VMDK/…).

package-installer — Package / installer

Parent file_category: archive
Extensions (38): .aab, .aar, .apk, .apkg, .apkm, .apks, .appimage, .appx, .appxbundle, .crx, .deb, .drpm, .egg, .eopkg, .flatpak, .flatpakref, .gem, .ipa, .jmod, .mpkg, .msi, .msix, .msixbundle, .msp, .nupkg, .pkg, .rpm, .run, .snap, .srpm, .tazpkg, .tipa, .udeb, .vsix, .whl, .xapk, .xbps, .xpi

OS, application and language-ecosystem installable packages (deb/rpm/msi/apk/AppImage/wheel/gem/…).

executable-binary — Executable / binary

Parent file_category: system
Extensions (37): .a, .ax, .axf, .beam, .bin, .bundle, .class, .com, .cpl, .dll, .dol, .drv, .dylib, .efi, .elf, .exe, .jsa, .ko, .lib, .node, .nro, .nso, .o, .ocx, .out, .prx, .pyc, .pyd, .pyo, .rlib, .rmeta, .rpx, .scr, .self, .so, .sys, .xex

Native executables, shared/static libraries, compiled object code and byte-code.

email — E-mail & mailbox

Parent file_category: system
Extensions (17): .dbx, .eml, .emlx, .mbox, .mbs, .mbx, .mht, .mhtml, .mim, .mime, .msg, .nws, .oft, .ost, .p7m, .pst, .tnef

Individual messages and mailbox stores (EML/MSG/mbox/PST/…).

certificate-key — Certificate & key

Parent file_category: system
Extensions (33): .asc, .bks, .cer, .cert, .crl, .crt, .csr, .der, .gpg, .jceks, .jks, .jwk, .jwks, .kbx, .key, .keystore, .p12, .p7b, .p7c, .p7r, .p7s, .p8, .pem, .pfx, .pgp, .pk8, .pkr, .ppk, .pub, .req, .sig, .skr, .spc

X.509 certificates, cryptographic keys, keystores and signatures.

Notes

key is a cryptographic private key here (not an Apple Keynote deck); asc is treated as PGP-armored key/signature material.

log — Log & diagnostic

Parent file_category: system
Extensions (16): .dmp, .err, .etl, .evt, .evtx, .hprof, .journal, .log, .log1, .log2, .logs, .ltsv, .mdmp, .pcap, .pcapng, .trace

Application/system logs and diagnostic event traces.

other — Other / unknown

Parent file_category: other
Extensions (0): —

No matching group — an unrecognised or absent extension. The bucket file_group is designed to shrink.

Summary

Group	Label	Parent file_category	# ext
raster-photo	Raster / photo	image	57
raw-photo	Camera RAW	image	40
vector-image	Vector image	image	24
layered-image	Layered / authoring image	image	20
animated-image	Animated image	image	7
video	Video	video	80
audio-lossy	Lossy audio	audio	33
audio-lossless	Lossless / PCM audio	audio	29
audiobook	Audiobook	audio	5
audio-project	Audio project, sampler & instrument	audio	73
playlist	Playlist	audio	17
subtitle	Subtitle / caption	video	21
document-text	Plain text document	document	11
document-office	Word-processor / office document	document	30
pdf	PDF & page description	document	10
presentation	Presentation	document	21
spreadsheet	Spreadsheet / tabular	document	34
ebook	E-book	document	29
comic	Comic archive	document	7
markup	Markup & typesetting source	document	65
3d-model	3D model / mesh	three-d-cad	54
cad	CAD & engineering	three-d-cad	58
font	Font	system	31
source-code	Source code	development	150
script	Shell / automation script	development	36
web-asset	Web asset	development	14
notebook	Computational notebook	development	8
config-data	Config & structured data	development	77
database	Database & dataset	system	54
archive	Archive / compressed	archive	74
disk-image	Disk / filesystem image	archive	48
package-installer	Package / installer	archive	38
executable-binary	Executable / binary	system	37
email	E-mail & mailbox	system	17
certificate-key	Certificate & key	system	33
log	Log & diagnostic	system	16
other	Other / unknown	other	0

Extension index

Every mapped extension, alphabetically, with its group.

Extension	Group
.123	spreadsheet
.1st	document-text
.264	video
.265	video
.3dm	cad
.3ds	3d-model
.3dxml	cad
.3fr	raw-photo
.3g2	video
.3ga	audio-lossy
.3gp	video
.3gpp	video
.3mf	3d-model
.602	document-office
.669	audio-project
.7z	archive
.a	executable-binary
.aa	audiobook
.aa3	audio-lossy
.aab	package-installer
.aac	audio-lossy
.aar	package-installer
.aax	audiobook
.aaxc	audiobook
.abc	3d-model
.abw	document-office
.ac3	audio-lossy
.acbf	comic
.accdb	database
.accde	database
.ace	archive
.acsm	ebook
.ada	source-code
.adb	source-code
.adf	disk-image
.adg	audio-project
.adoc	markup
.ads	source-code
.adv	audio-project
.adz	disk-image
.afa	archive
.afdesign	layered-image
.aff	disk-image
.afm	font
.afphoto	layered-image
.agr	audio-project
.ahk	script
.ahk2	script
.ai	vector-image
.aif	audio-lossless
.aifc	audio-lossless
.aiff	audio-lossless
.aimppl	playlist
.akp	audio-project
.alac	audio-lossless
.alp	audio-project
.als	audio-project
.alz	archive
.amf	3d-model
.amr	audio-lossy
.amv	video
.ani	animated-image
.ans	document-text
.ape	audio-lossless
.apk	package-installer
.apkg	package-installer
.apkm	package-installer
.apks	package-installer
.apng	animated-image
.appimage	package-installer
.applescript	script
.appx	package-installer
.appxbundle	package-installer
.aqt	subtitle
.ar	archive
.arc	archive
.ari	raw-photo
.arj	archive
.arrow	database
.arw	raw-photo
.asc	certificate-key
.asciidoc	markup
.asf	video
.ash	script
.asm	source-code
.ass	subtitle
.astro	web-asset
.asx	playlist
.at3	audio-lossy
.atom	markup
.au	audio-lossless
.au3	source-code
.aup	audio-project
.aup3	audio-project
.aupreset	audio-project
.av1	video
.avc	video
.avi	video
.avif	raster-photo
.avifs	raster-photo
.avro	database
.avsc	config-data
.awb	audio-lossy
.awk	script
.ax	executable-binary
.axf	executable-binary
.azw	ebook
.azw3	ebook
.azw4	ebook
.b1	archive
.b4s	playlist
.b5t	disk-image
.b6t	disk-image
.ba	archive
.babelrc	config-data
.bas	source-code
.bash	script
.bat	script
.bay	raw-photo
.bazel	config-data
.bdf	font
.beam	executable-binary
.bib	markup
.bin	executable-binary
.bks	certificate-key
.blend	3d-model
.blend1	3d-model
.bmp	raster-photo
.bpg	raster-photo
.br	archive
.braw	video
.brd	cad
.bson	database
.bst	markup
.btm	script
.bundle	executable-binary
.bvr	video
.bwf	audio-lossless
.bwproject	audio-project
.bz2	archive
.bzl	config-data
.c	source-code
.c++	source-code
.c4d	3d-model
.cab	archive
.caf	audio-lossless
.cairo	source-code
.cap	raw-photo
.capnp	config-data
.catdrawing	cad
.catpart	cad
.catproduct	cad
.cb7	comic
.cba	comic
.cbl	source-code
.cbr	comic
.cbt	comic
.cbw	comic
.cbz	comic
.cc	source-code
.ccd	disk-image
.cdf	database
.cdr	vector-image
.ceb	ebook
.cebx	ebook
.cer	certificate-key
.cert	certificate-key
.cff	font
.cfg	config-data
.cgi	script
.cgm	vector-image
.chd	disk-image
.chitubox	3d-model
.chm	ebook
.cif	disk-image
.cjs	source-code
.cl	source-code
.class	executable-binary
.clip	layered-image
.clj	source-code
.cljc	source-code
.cljs	source-code
.cls	markup
.cmake	config-data
.cmd	script
.cmx	vector-image
.cnc	cad
.cnf	config-data
.cob	source-code
.cobol	source-code
.coffee	source-code
.collada	3d-model
.com	executable-binary
.command	script
.comp	source-code
.conf	config-data
.config	config-data
.containerfile	config-data
.cpio	archive
.cpl	executable-binary
.cpp	source-code
.cpr	audio-project
.cpt	layered-image
.cpy	source-code
.cr	source-code
.cr2	raw-photo
.cr3	raw-photo
.creole	markup
.crl	certificate-key
.crt	certificate-key
.crw	raw-photo
.crx	package-installer
.cs	source-code
.cs1	raw-photo
.csh	script
.cso	disk-image
.csp	layered-image
.csproj	config-data
.csr	certificate-key
.css	web-asset
.csv	spreadsheet
.csx	source-code
.ctb	3d-model
.cts	source-code
.cu	source-code
.cue	playlist
.cuh	source-code
.cur	raster-photo
.cwb	audio-project
.cwk	document-office
.cwp	audio-project
.cxx	source-code
.d	source-code
.d64	disk-image
.daa	disk-image
.dae	3d-model
.dar	archive
.dart	source-code
.dash	script
.dav	video
.dawproject	audio-project
.db	database
.db3	database
.dbf	database
.dbx	email
.dcm	raw-photo
.dcr	raw-photo
.dcs	raw-photo
.ddl	database
.dds	raster-photo
.deb	package-installer
.der	certificate-key
.desktop	config-data
.dff	audio-lossless
.dfont	font
.dfxp	subtitle
.dgc	archive
.dgn	cad
.dhall	config-data
.dia	vector-image
.dib	raster-photo
.dif	spreadsheet
.diff	source-code
.dita	markup
.divx	video
.diz	document-text
.djv	ebook
.djvu	ebook
.dll	executable-binary
.dls	audio-project
.dmg	disk-image
.dmp	log
.dng	raw-photo
.doc	document-office
.docbook	markup
.dockerfile	config-data
.docm	document-office
.docx	document-office
.dol	executable-binary
.dot	document-office
.dotenv	config-data
.dotm	document-office
.dotx	document-office
.dpr	source-code
.drawio	vector-image
.drf	raw-photo
.drl	cad
.drpm	package-installer
.drv	executable-binary
.drw	vector-image
.dsd	audio-lossless
.dsf	audio-lossless
.dsk	disk-image
.dta	database
.dtd	markup
.dts	audio-lossy
.dtx	markup
.dump	database
.dv	video
.dvi	pdf
.dvr	video
.dvr-ms	video
.dwf	cad
.dwfx	cad
.dwg	cad
.dwt	cad
.dxf	cad
.dylib	executable-binary
.e01	disk-image
.e57	3d-model
.eac3	audio-lossy
.ear	archive
.editorconfig	config-data
.edn	source-code
.eex	source-code
.efi	executable-binary
.egg	package-installer
.eip	raw-photo
.ejs	markup
.el	source-code
.elf	executable-binary
.elm	source-code
.elv	script
.emf	vector-image
.eml	email
.emlx	email
.emn	cad
.emz	vector-image
.env	config-data
.eopkg	package-installer
.eot	font
.eps	vector-image
.epsf	vector-image
.epsi	vector-image
.epub	ebook
.erb	markup
.erf	raw-photo
.erl	source-code
.err	log
.esd	disk-image
.eslintrc	config-data
.et	spreadsheet
.etl	log
.etx	document-text
.evt	log
.evtx	log
.ex	source-code
.exe	executable-binary
.exp	script
.expect	script
.exr	raster-photo
.exs	audio-project
.f	source-code
.f03	source-code
.f08	source-code
.f3d	cad
.f3z	cad
.f4a	audio-lossy
.f4b	audiobook
.f4v	video
.f90	source-code
.f95	source-code
.fb2	ebook
.fb2z	ebook
.fbs	config-data
.fbx	3d-model
.fbz	ebook
.fcstd	cad
.fdb	database
.fdf	pdf
.fdi	disk-image
.feather	database
.fff	raw-photo
.ffp	audio-project
.ffu	disk-image
.fig	vector-image
.fish	script
.fit	raster-photo
.fits	raster-photo
.flac	audio-lossless
.flatpak	package-installer
.flatpakref	package-installer
.flc	animated-image
.fli	animated-image
.flif	raster-photo
.flp	audio-project
.flv	video
.fmp12	database
.fmp4	video
.fmpi	video
.fnt	font
.fodg	vector-image
.fodp	presentation
.fods	spreadsheet
.fodt	document-office
.fon	font
.fond	font
.for	source-code
.fot	font
.fp7	database
.fpl	playlist
.frag	source-code
.frm	database
.fs	source-code
.fsi	source-code
.fsproj	config-data
.fsscript	source-code
.fsx	source-code
.ftn	source-code
.fxb	audio-project
.fxm	video
.fxp	audio-project
.g64	video
.g64x	video
.gbr	cad
.gca	archive
.gcf	archive
.gcm	disk-image
.gco	3d-model
.gcode	3d-model
.gcrd	config-data
.gd	source-code
.gdb	database
.gdoc	document-office
.gem	package-installer
.gemspec	source-code
.geojson	config-data
.geom	source-code
.gf	font
.gho	disk-image
.ghs	disk-image
.gi	disk-image
.gif	animated-image
.gifv	animated-image
.gig	audio-project
.glb	3d-model
.glsl	source-code
.gltf	3d-model
.gltf2	3d-model
.glyphs	font
.glyphspackage	font
.gmp4	video
.gnumeric	spreadsheet
.go	source-code
.gpg	certificate-key
.gpr	raw-photo
.gql	config-data
.gradle	config-data
.graphql	config-data
.groovy	source-code
.gsheet	spreadsheet
.gslides	presentation
.gsm	audio-lossy
.gvy	source-code
.gxf	video
.gy	source-code
.gz	archive
.gzip	archive
.h	source-code
.h++	source-code
.h264	video
.h265	video
.h26l	video
.h2song	audio-project
.h3r	video
.h5	database
.haml	markup
.handlebars	markup
.hbs	markup
.hcl	config-data
.hdd	disk-image
.hdf5	database
.hdr	raster-photo
.heex	source-code
.heic	raster-photo
.heics	raster-photo
.heif	raster-photo
.hevc	video
.hh	source-code
.hif	raster-photo
.hlsl	source-code
.hm4	video
.hpgl	vector-image
.hpp	source-code
.hprof	log
.hqx	archive
.hrl	source-code
.hs	source-code
.hta	script
.htm	markup
.html	markup
.hwp	document-office
.hwpx	document-office
.hx	source-code
.hxml	source-code
.hxx	source-code
.i	source-code
.iam	cad
.ibd	database
.ibooks	ebook
.icns	raster-photo
.ico	raster-photo
.ics	config-data
.idml	layered-image
.idw	cad
.idx	subtitle
.ifc	cad
.ifcxml	cad
.ifczip	cad
.iff	raster-photo
.ifo	video
.iges	cad
.igs	cad
.iiq	raw-photo
.ilbm	raster-photo
.img	disk-image
.importmap	web-asset
.inc	source-code
.indd	layered-image
.ini	config-data
.inl	source-code
.ino	source-code
.ipa	package-installer
.ipn	cad
.ipp	source-code
.ipt	cad
.ipynb	notebook
.iso	disk-image
.isz	disk-image
.it	audio-project
.j2	markup
.j2k	raster-photo
.jade	markup
.jar	archive
.jav	source-code
.java	source-code
.jceks	certificate-key
.jfif	raster-photo
.jif	raster-photo
.jinja	markup
.jinja2	markup
.jks	certificate-key
.jl	source-code
.jmod	package-installer
.jng	raster-photo
.journal	log
.jp2	raster-photo
.jpc	raster-photo
.jpe	raster-photo
.jpeg	raster-photo
.jpf	raster-photo
.jpg	raster-photo
.jpm	raster-photo
.jpx	raster-photo
.js	source-code
.jsa	executable-binary
.json	config-data
.json5	config-data
.jsonc	config-data
.jsonl	config-data
.jsonnet	config-data
.jss	subtitle
.jsx	source-code
.jt	cad
.jwk	certificate-key
.jwks	certificate-key
.jxl	raster-photo
.k25	raw-photo
.kar	audio-project
.kbx	certificate-key
.kc2	raw-photo
.kdb	database
.kdbx	database
.kdc	raw-photo
.kdl	config-data
.key	certificate-key
.keystore	certificate-key
.kf8	ebook
.kfx	ebook
.kgb	archive
.kicad_pcb	cad
.kicad_sch	cad
.kit	audio-project
.ko	executable-binary
.kpf	ebook
.kpl	playlist
.kra	layered-image
.ksh	script
.ksplat	3d-model
.kt	source-code
.ktm	source-code
.kts	source-code
.kwd	document-office
.l16	audio-lossless
.la	audio-lossless
.las	3d-model
.latex	markup
.laz	3d-model
.ldf	database
.leex	source-code
.less	web-asset
.lha	archive
.lhs	source-code
.lib	executable-binary
.libsonnet	config-data
.liquid	markup
.lisp	source-code
.lit	ebook
.litcoffee	source-code
.livemd	notebook
.lock	config-data
.log	log
.log1	log
.log2	log
.logic	audio-project
.logicx	audio-project
.logs	log
.lrc	subtitle
.lrf	ebook
.lrx	ebook
.lrz	archive
.lsp	source-code
.ltsv	log
.ltx	markup
.lua	source-code
.lwo	3d-model
.lwp	document-office
.lws	3d-model
.lxl	3d-model
.lxo	3d-model
.lz	archive
.lz4	archive
.lzh	archive
.lzma	archive
.lzo	archive
.lzop	archive
.m	source-code
.m15	audio-project
.m1v	video
.m2t	video
.m2ts	video
.m2v	video
.m3u	playlist
.m3u8	playlist
.m4a	audio-lossy
.m4b	audiobook
.m4r	audio-lossy
.m4s	video
.m4v	video
.ma	3d-model
.mak	config-data
.man	markup
.markdown	markup
.max	3d-model
.mb	3d-model
.mbox	email
.mbs	email
.mbx	email
.mcc	subtitle
.mcd	cad
.mcg	video
.mcw	document-office
.md	markup
.mdb	database
.mdc	raw-photo
.mde	database
.mdf	database
.mdi	raster-photo
.mdmp	log
.mdown	markup
.mds	disk-image
.mdwn	markup
.mdx	markup
.me	document-text
.med	audio-project
.mediawiki	markup
.mef	raw-photo
.mesh	3d-model
.metal	source-code
.mht	email
.mhtml	email
.mid	audio-project
.midi	audio-project
.mim	email
.mime	email
.minipsf	audio-project
.mjs	source-code
.mk	config-data
.mka	audio-lossy
.mkd	markup
.mkdn	markup
.mkv	video
.ml	source-code
.mli	source-code
.mlp	audio-lossless
.mm	source-code
.mmd	3d-model
.mmp	audio-project
.mmpz	audio-project
.mng	animated-image
.mo3	audio-project
.mobi	ebook
.mod	video
.model	cad
.moov	video
.mos	raw-photo
.mov	video
.move	source-code
.movie	video
.mp1	audio-lossy
.mp2	audio-lossy
.mp3	audio-lossy
.mp4	video
.mpa	audio-lossy
.mpc	audio-lossy
.mpe	video
.mpeg	video
.mpg	video
.mpga	audio-lossy
.mpkg	package-installer
.mpls	playlist
.mpsub	subtitle
.mpv	video
.mqo	3d-model
.mrw	raw-photo
.msg	email
.msi	package-installer
.msix	package-installer
.msixbundle	package-installer
.msp	package-installer
.mtl	3d-model
.mtm	audio-project
.mts	video
.mustache	markup
.mxf	video
.myd	database
.myi	database
.n3r	video
.nasm	source-code
.nb	notebook
.nc	cad
.ncx	ebook
.ndf	database
.ndjson	config-data
.nef	raw-photo
.neu	cad
.nfo	document-text
.nim	source-code
.nims	source-code
.ninja	config-data
.nix	config-data
.njk	markup
.nkc	audio-project
.nki	audio-project
.nkm	audio-project
.nksc	raw-photo
.nksf	audio-project
.nksn	audio-project
.nkx	audio-project
.node	executable-binary
.npmrc	config-data
.npr	audio-project
.npy	database
.npz	database
.nrg	disk-image
.nro	executable-binary
.nroff	markup
.nrw	raw-photo
.nsf	database
.nso	executable-binary
.nsp	disk-image
.nsv	video
.ntf	database
.nu	script
.numbers	spreadsheet
.nunjucks	markup
.nupkg	package-installer
.nws	email
.o	executable-binary
.obj	3d-model
.ocx	executable-binary
.odb	database
.odg	vector-image
.odp	presentation
.ods	spreadsheet
.odt	document-office
.oeb	ebook
.off	3d-model
.ofr	audio-lossless
.ofs	audio-lossless
.oft	email
.oga	audio-lossy
.ogg	audio-lossy
.ogm	video
.ogv	video
.ogx	audio-lossy
.oma	audio-lossy
.opf	ebook
.opus	audio-lossy
.ora	layered-image
.orc	database
.orf	raw-photo
.org	markup
.ost	email
.otc	font
.otf	font
.otp	presentation
.ots	spreadsheet
.ott	document-office
.out	executable-binary
.ova	disk-image
.ovf	disk-image
.oxps	pdf
.p12	certificate-key
.p7b	certificate-key
.p7c	certificate-key
.p7m	email
.p7r	certificate-key
.p7s	certificate-key
.p8	certificate-key
.pages	document-office
.pak	archive
.pam	raster-photo
.paq	archive
.par	cad
.parquet	database
.pas	source-code
.pat	audio-project
.patch	source-code
.pbm	raster-photo
.pbxproj	config-data
.pcap	log
.pcapng	log
.pcd	3d-model
.pcf	font
.pcl	pdf
.pcm	audio-lossless
.pcss	web-asset
.pct	raster-photo
.pcx	raster-photo
.pdb	ebook
.pdd	layered-image
.pdf	pdf
.pdn	layered-image
.pea	archive
.pef	raw-photo
.pem	certificate-key
.pf2	font
.pfa	font
.pfb	font
.pfm	font
.pfx	certificate-key
.pgm	raster-photo
.pgn	document-text
.pgp	certificate-key
.php	source-code
.php3	source-code
.php4	source-code
.php5	source-code
.phps	source-code
.phtml	source-code
.pickle	database
.pict	raster-photo
.pjs	subtitle
.pk	font
.pk3	archive
.pk4	archive
.pk8	certificate-key
.pkg	package-installer
.pkl	database
.pkr	certificate-key
.pl	source-code
.pla	playlist
.plist	config-data
.pln	cad
.pls	playlist
.plt	vector-image
.ply	3d-model
.pm	source-code
.pmd	3d-model
.pmx	3d-model
.png	raster-photo
.pnm	raster-photo
.pod	markup
.por	database
.postcss	web-asset
.pot	presentation
.potm	presentation
.potx	presentation
.pp	source-code
.ppk	certificate-key
.ppm	raster-photo
.pps	presentation
.ppsm	presentation
.ppsx	presentation
.ppt	presentation
.pptm	presentation
.pptx	presentation
.prc	ebook
.prefs	config-data
.prettierrc	config-data
.pri	config-data
.prn	pdf
.procreate	layered-image
.prop	config-data
.properties	config-data
.proto	config-data
.prt	cad
.prx	executable-binary
.prz	presentation
.ps	pdf
.ps1	script
.ps1xml	script
.psb	layered-image
.psd	layered-image
.psd1	script
.psflib	audio-project
.psm	cad
.psm1	script
.pst	email
.ptf	audio-project
.pts	audio-project
.ptx	audio-project
.pub	certificate-key
.pug	markup
.purs	source-code
.pxd	source-code
.pxi	source-code
.pxm	layered-image
.py	source-code
.pyc	executable-binary
.pyd	executable-binary
.pyi	source-code
.pyo	executable-binary
.pyw	source-code
.pyx	source-code
.qb	3d-model
.qcow	disk-image
.qcow2	disk-image
.qcp	audio-lossy
.qed	disk-image
.qmd	notebook
.qml	source-code
.qoi	raster-photo
.qpw	spreadsheet
.qt	video
.qtif	raster-photo
.qtvr	video
.r	source-code
.r00	archive
.r01	archive
.r3d	video
.ra	audio-lossy
.raf	raw-photo
.rake	source-code
.ram	audio-lossy
.rar	archive
.ras	raster-photo
.raw	raw-photo
.rax	audio-lossy
.rb	source-code
.rbw	source-code
.rc	config-data
.rcd	video
.rcy	audio-project
.rdata	database
.rdoc	markup
.rds	database
.re	source-code
.readme	document-text
.realm	database
.reapeaks	audio-project
.reg	config-data
.rei	source-code
.req	certificate-key
.resx	config-data
.rex	audio-project
.rf64	audio-lossless
.rfa	cad
.rgb	raster-photo
.rkt	source-code
.rlib	executable-binary
.rm	video
.rmarkdown	notebook
.rmd	notebook
.rmeta	executable-binary
.rmi	audio-project
.rmj	video
.rmm	video
.rms	video
.rmvb	video
.rmx	video
.rng	markup
.rns	audio-project
.rnw	notebook
.roff	markup
.ron	config-data
.roq	video
.rpm	package-installer
.rpp	audio-project
.rpx	executable-binary
.rpy	source-code
.rs	source-code
.rss	markup
.rst	markup
.rt	subtitle
.rte	cad
.rtf	document-office
.run	package-installer
.rv	video
.rvt	cad
.rvx	video
.rw2	raw-photo
.rwl	raw-photo
.rwz	raw-photo
.rx2	audio-project
.rz	archive
.s	source-code
.s3db	database
.s3m	audio-project
.s7z	archive
.sab	cad
.sai	layered-image
.sai2	layered-image
.sami	subtitle
.sar	archive
.sas7bdat	database
.sass	web-asset
.sat	cad
.sav	database
.sbt	config-data
.sbv	subtitle
.sc	source-code
.scad	cad
.scala	source-code
.scc	subtitle
.scdoc	cad
.sch	cad
.scm	source-code
.scpt	script
.scptd	script
.scr	executable-binary
.scss	web-asset
.sdd	presentation
.sdf	database
.sdw	document-office
.sea	archive
.sed	script
.self	executable-binary
.service	config-data
.ses	audio-project
.sesx	audio-project
.sf2	audio-project
.sf3	audio-project
.sfark	audio-project
.sfd	font
.sfz	audio-project
.sgi	raster-photo
.sgml	markup
.sh	script
.shar	archive
.shn	audio-lossless
.shtml	markup
.shw	presentation
.sid	audio-project
.sig	certificate-key
.sit	archive
.sitx	archive
.sketch	layered-image
.skp	cad
.skr	certificate-key
.sl3	database
.sldasm	cad
.slddrw	cad
.sldm	presentation
.sldprt	cad
.sldx	presentation
.slim	markup
.slk	spreadsheet
.sln	config-data
.smi	subtitle
.snap	package-installer
.snb	ebook
.snd	audio-lossless
.snf	font
.sng	audio-project
.so	executable-binary
.sol	source-code
.sparsebundle	disk-image
.sparseimage	disk-image
.spc	certificate-key
.splat	3d-model
.spx	audio-lossy
.sql	database
.sqlite	database
.sqlite3	database
.sqlitedb	database
.sr2	raw-photo
.srf	raw-photo
.srpm	package-installer
.srr	config-data
.srs	config-data
.srt	subtitle
.srw	raw-photo
.ss	source-code
.ssa	subtitle
.stc	spreadsheet
.step	cad
.sti	presentation
.stl	3d-model
.stm	audio-project
.stp	cad
.stpz	cad
.stw	document-office
.sty	markup
.styl	web-asset
.stylus	web-asset
.sub	subtitle
.suit	font
.sup	subtitle
.sv	source-code
.svelte	web-asset
.svg	vector-image
.svgz	vector-image
.svh	source-code
.swf	video
.swift	source-code
.swm	disk-image
.sxc	spreadsheet
.sxi	presentation
.sxt	audio-project
.sxw	document-office
.sylk	spreadsheet
.sys	executable-binary
.syx	audio-project
.sz	archive
.t	source-code
.t1	font
.tab	spreadsheet
.tak	audio-lossless
.tap	cad
.tar	archive
.targa	raster-photo
.taz	archive
.tazpkg	package-installer
.tb2	archive
.tbz	archive
.tbz2	archive
.tcc	source-code
.tcl	source-code
.tcr	ebook
.tcsh	script
.tex	markup
.texi	markup
.texinfo	markup
.text	document-text
.textile	markup
.tf	config-data
.tfm	font
.tfstate	config-data
.tfvars	config-data
.tga	raster-photo
.tgz	archive
.thrift	config-data
.tib	disk-image
.tif	raster-photo
.tiff	raster-photo
.tipa	package-installer
.tlz	archive
.tlz4	archive
.tlzma	archive
.tlzo	archive
.tnef	email
.toast	disk-image
.tod	video
.toml	config-data
.tool	script
.topojson	config-data
.torrent	config-data
.tpp	source-code
.tpz	ebook
.trace	log
.troff	markup
.ts	video
.tsv	spreadsheet
.tsx	source-code
.tta	audio-lossless
.ttc	font
.ttf	font
.ttml	subtitle
.tts	video
.tvpp	layered-image
.twig	markup
.txt	document-text
.txz	archive
.typ	markup
.tzst	archive
.uc2	archive
.udeb	package-installer
.udf	disk-image
.ufo	font
.uha	archive
.uif	disk-image
.ult	audio-project
.uni	audio-project
.unit	config-data
.uof	document-office
.uop	presentation
.uos	spreadsheet
.uot	document-office
.usd	3d-model
.usda	3d-model
.usdc	3d-model
.usdz	3d-model
.usf	subtitle
.v	source-code
.vala	source-code
.vapi	source-code
.vb	source-code
.vbe	script
.vbproj	config-data
.vbs	script
.vcf	config-data
.vcs	config-data
.vct	config-data
.vcxproj	config-data
.vdi	disk-image
.vert	source-code
.vfb	font
.vfd	disk-image
.vhd	disk-image
.vhdl	source-code
.vhdx	disk-image
.viv	video
.vivo	video
.vmdk	disk-image
.vob	video
.voc	audio-lossless
.vox	3d-model
.vpk	archive
.vqf	audio-lossy
.vrml	3d-model
.vsd	vector-image
.vsdx	vector-image
.vsix	package-installer
.vss	vector-image
.vstpreset	audio-project
.vtt	subtitle
.vue	web-asset
.vwx	cad
.w64	audio-lossless
.war	archive
.wasm	web-asset
.wat	source-code
.wav	audio-lossless
.wave	audio-lossless
.wax	playlist
.wb2	spreadsheet
.wbfs	disk-image
.wbmp	raster-photo
.wdb	database
.weba	audio-lossy
.webm	video
.webmanifest	web-asset
.webp	raster-photo
.wgsl	source-code
.whl	package-installer
.wiki	markup
.wim	disk-image
.wk1	spreadsheet
.wk3	spreadsheet
.wk4	spreadsheet
.wks	spreadsheet
.wma	audio-lossy
.wmf	vector-image
.wmv	video
.wmx	playlist
.wmz	vector-image
.woff	font
.woff2	font
.wpd	document-office
.wpl	playlist
.wps	document-office
.wpt	document-office
.wq1	spreadsheet
.wri	document-office
.wrl	3d-model
.wsf	script
.wsh	script
.wtv	video
.wtx	document-text
.wv	audio-lossless
.wvc	audio-lossless
.wvx	playlist
.x3d	3d-model
.x3db	3d-model
.x3dv	3d-model
.x3f	raw-photo
.x_b	cad
.x_t	cad
.xaml	markup
.xapk	package-installer
.xar	archive
.xbm	raster-photo
.xbps	package-installer
.xcconfig	config-data
.xcf	layered-image
.xci	disk-image
.xdp	pdf
.xex	executable-binary
.xfdf	pdf
.xht	markup
.xhtml	markup
.xi	audio-project
.xla	spreadsheet
.xlam	spreadsheet
.xls	spreadsheet
.xlsb	spreadsheet
.xlsm	spreadsheet
.xlsx	spreadsheet
.xlt	spreadsheet
.xltm	spreadsheet
.xltx	spreadsheet
.xlw	spreadsheet
.xmf	audio-project
.xml	markup
.xonsh	script
.xpi	package-installer
.xpm	raster-photo
.xps	pdf
.xpt	database
.xsd	markup
.xsl	markup
.xslt	markup
.xspf	playlist
.xwd	raster-photo
.xyz	3d-model
.xz	archive
.y4m	video
.yaml	config-data
.yarnrc	config-data
.yml	config-data
.yz1	archive
.z	archive
.zabw	document-office
.zig	source-code
.zip	archive
.zipx	archive
.zoo	archive
.zpaq	archive
.zpl	playlist
.zpln	notebook
.zpr	3d-model
.zsh	script
.zst	archive
.zstd	archive
.ztl	3d-model
.zz	archive

1358 extensions across 37 groups. Generated from backend/filearr/file_groups.py.