| .atom | Atom feed |
| .avro | Apache Avro container |
| .mpd | MPEG-DASH manifest |
| .epub | EPUB e-book |
| — | GeoJSON (registered type) |
| .gpx | GPS exchange format |
| .graphql .gql | GraphQL query document |
| — | gRPC framed message |
| .gz .gzip .tgz | gzip compressed data |
| — | JavaScript import map |
| .jar .war .ear | Java archive |
| — | JOSE compact serialization |
| .json .geojson | JSON document |
| .json-patch | JSON Patch document (RFC 6902) |
| .jwt | JSON Web Token (compact) |
| .jsonld | JSON-LD linked data |
| .webmanifest | Web app manifest (PWA) |
| .mbox | mbox mailbox |
| — | JSON Merge Patch (RFC 7396) |
| .doc .dot | Word 97-2003 document |
| .bin .dat .so .dll .class .img .iso | Arbitrary binary data |
| .ipa | iOS app archive (zip) |
| .ogx | Ogg container (mixed) |
| .pdf | PDF document |
| .sig .asc | PGP signature |
| .p8 .key | PKCS #8 private key |
| .der | DER-encoded X.509 certificate |
| .ps .eps .ai | PostScript |
| — | RFC 9457 problem details (error responses) |
| .rss | RSS feed |
| .rtf | Rich Text Format |
| — | JSON Schema |
| — | SOAP envelope |
| .toml | TOML configuration |
| .azw .azw3 | Kindle e-book |
| .apk | Android package |
| .arrow .feather | Apache Arrow IPC file |
| — | JSON:API document |
| .key | Apple Keynote presentation |
| .numbers | Apple Numbers spreadsheet |
| .pages | Apple Pages document |
| .deb | Debian package |
| .kml | KML geographic data |
| .exe | Windows executable |
| .xls .xlt .xla | Excel 97-2003 workbook |
| .xlsm | Excel macro-enabled workbook |
| .eot | Embedded OpenType font (IE) |
| .msg | Outlook message |
| .ppt .pps .pot | PowerPoint 97-2003 presentation |
| .odg | OpenDocument drawing |
| .odp | OpenDocument presentation |
| .ods | OpenDocument spreadsheet |
| .odt | OpenDocument text |
| .pptx | PowerPoint presentation (OOXML) |
| .ppsx | PowerPoint slideshow (OOXML) |
| .xlsx | Excel workbook (OOXML) |
| .docx | Word document (OOXML) |
| .dotx | Word template (OOXML) |
| .rar | RAR archive |
| .vsd .vsdx | Visio drawing |
| .wasm | WebAssembly binary |
| .7z | 7-Zip archive |
| .dmg | macOS disk image |
| .bib | BibTeX bibliography |
| .torrent | BitTorrent metainfo |
| .bz2 .boz | bzip2 compressed data |
| .crx | Chrome extension package |
| .pfa .pfb | Type 1 font |
| .cgi | CGI script |
| .phps | PHP source (display) |
| .ltx | LaTeX document |
| .lzma | LZMA compressed data |
| .mobi .prc | Mobipocket e-book |
| .m3u8 .m3u | HLS playlist |
| .msi | Windows Installer package |
| .ndjson .jsonl | Newline-delimited JSON |
| .parquet | Apache Parquet columnar data |
| .pem .crt .cer | PEM certificate or key |
| .p12 .pfx | PKCS #12 keystore |
| .proto | Protocol Buffers (schema source or binary) |
| .rpm | RPM package |
| .swf | Flash movie (obsolete) |
| .map | Source map |
| .sqlite .sqlite3 .db | SQLite database |
| .tar | tar archive |
| .tfm | TeX font metrics |
| — | Legacy web app manifest |
| — | URL-encoded form body (key=value&…) |
| .xpi | Firefox extension package |
| .xz | xz compressed data |
| .xhtml .xht | XHTML document |
| .xsl .xsd .rng .xslt | XML document |
| .yaml .yml | YAML document |
| .zip | ZIP archive |
| .zst | Zstandard compressed data |