| application/cbor | .cbor | Concise Binary Object Representation — a binary data format inspired by JSON, designed for constrained environments. | Standard | RFC 8949 |
| application/epub+zip | .epub | EPUB e-book format — an open standard for digital books based on web technologies. | Standard | — |
| application/graphql+json | — | GraphQL over HTTP request and response bodies, including queries, variables, and results. | Standard | — |
| application/gzip | .gz.gzip | GNU Zip — a compressed file format using the DEFLATE algorithm. | Standard | RFC 6713 |
| application/json | .json | JavaScript Object Notation — a lightweight, human-readable data interchange format. | Standard | RFC 8259 |
| application/ld+json | .jsonld | JSON-LD — JSON for Linked Data. Adds structured data semantics for the Semantic Web. | Standard | — |
| application/msgpack | .msgpack | MessagePack — an efficient binary serialisation format. More compact than JSON. | Vendor | — |
| application/msword | .doc | Microsoft Word document in the legacy binary format. | Vendor | — |
| application/octet-stream | .bin | Arbitrary binary data with no specific type. Used as the default for file downloads. | Standard | RFC 2046 |
| application/pdf | .pdf | Portable Document Format — a fixed-layout document format standardised by ISO 32000. | Standard | — |
| application/protobuf | .proto | Protocol Buffers — Google's binary serialisation format for structured data. | Vendor | — |
| application/rtf | .rtf | Rich Text Format — a cross-platform document format developed by Microsoft. | Standard | — |
| application/sql | .sql | SQL queries or scripts. | Standard | RFC 5646 |
| application/vnd.ms-excel | .xls | Microsoft Excel spreadsheet in the legacy binary format. | Vendor | — |
| application/vnd.ms-powerpoint | .ppt | Microsoft PowerPoint presentation in the legacy binary format. | Vendor | — |
| application/vnd.openxmlformats-officedocument.presentationml.presentation | .pptx | Microsoft PowerPoint Open XML presentation — the modern XML-based PowerPoint format. | Vendor | — |
| application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | .xlsx | Microsoft Excel Open XML spreadsheet — the modern, XML-based Excel format. | Vendor | — |
| application/vnd.openxmlformats-officedocument.wordprocessingml.document | .docx | Microsoft Word Open XML document — the modern XML-based Word format. | Vendor | — |
| application/vnd.rar | .rar | RAR archive — a proprietary archive format supporting multi-part archives. | Vendor | — |
| application/wasm | .wasm | WebAssembly binary — a compact binary instruction format designed for efficient execution in web browsers. | Standard | — |
| application/x-7z-compressed | .7z | 7-Zip archive — an open format with high compression ratios. | Vendor | — |
| application/x-bzip2 | .bz2.bzip2 | bzip2 compressed data — provides better compression than gzip at the cost of speed. | Vendor | — |
| application/x-httpd-php | .php | PHP source file for server-side execution. Not a standard MIME type but widely used by web servers. | Vendor | — |
| application/x-ndjson | .ndjson | Newline-Delimited JSON — one JSON object per line, used for streaming and log data. | Vendor | — |
| application/x-sh | .sh | Shell script — a text file of shell commands for execution. | Vendor | — |
| application/x-tar | .tar | Tape Archive — an uncompressed archive format commonly combined with gzip (.tar.gz). | Vendor | — |
| application/x-www-form-urlencoded | — | URL-encoded form data — the default encoding for HTML form submissions. | Standard | — |
| application/xml | .xml | XML document in application context. Use when the document is not meant to be read directly by humans. | Standard | RFC 7303 |
| application/zip | .zip | ZIP archive — a compressed archive format widely used for file distribution. | Standard | — |
| audio/aac | .aac.m4a | Advanced Audio Coding — a lossy format that offers better quality than MP3 at similar bit rates. | Standard | — |
| audio/flac | .flac | Free Lossless Audio Codec — lossless compression that reduces file size without any quality loss. | Standard | — |
| audio/midi | .mid.midi | Musical Instrument Digital Interface — a protocol for encoding musical note and control data, not sampled audio. | Standard | — |
| audio/mpeg | .mp3.mp2 | MPEG audio — the most widely used format for compressed audio, covering MP3 and MP2. | Standard | RFC 3003 |
| audio/ogg | .oga.ogg | Ogg audio container — typically carries Vorbis or Opus encoded audio. | Standard | RFC 5334 |
| audio/opus | .opus | Opus — an open, versatile codec designed for interactive speech and music over the internet. | Standard | RFC 7845 |
| audio/wav | .wav | Waveform Audio — an uncompressed PCM audio format widely supported on Windows. | Standard | — |
| audio/webm | .weba | WebM audio — typically carries Opus or Vorbis audio in the WebM container. | Standard | — |
| font/otf | .otf | OpenType Font — an extension of TrueType supporting advanced typographic features. | Standard | RFC 8081 |
| font/ttf | .ttf | TrueType Font — the classic scalable font format developed by Apple and Microsoft. | Standard | RFC 8081 |
| font/woff | .woff | Web Open Font Format — a compressed font container optimised for web delivery. | Standard | RFC 8081 |
| font/woff2 | .woff2 | Web Open Font Format 2 — an improved WOFF with better compression using Brotli. | Standard | RFC 8081 |
| image/avif | .avif | AV1 Image File Format — a next-generation format with excellent compression, derived from the AV1 video codec. | Standard | — |
| image/bmp | .bmp | Windows Bitmap — an uncompressed raster format native to Windows. Large file sizes. | Standard | — |
| image/gif | .gif | Graphics Interchange Format — supports animation and palette-based colour, limited to 256 colours. | Standard | — |
| image/heic | .heic | High Efficiency Image Container — used by Apple devices. Provides better compression than JPEG. | Vendor | — |
| image/heif | .heif | High Efficiency Image File Format — container format for images encoded with HEVC and other codecs. | Standard | — |
| image/jp2 | .jp2.j2k | JPEG 2000 — a wavelet-based image format offering both lossy and lossless compression. | Standard | — |
| image/jpeg | .jpg.jpeg.jpe | JPEG image — a lossy compressed raster format widely used for photographs. | Standard | — |
| image/png | .png | Portable Network Graphics — a lossless raster format supporting transparency. | Standard | RFC 2083 |
| image/svg+xml | .svg.svgz | Scalable Vector Graphics — an XML-based format for two-dimensional vector graphics. | Standard | — |
| image/tiff | .tif.tiff | Tagged Image File Format — a flexible lossless format used in printing, scanning, and publishing workflows. | Standard | — |
| image/webp | .webp | WebP — a modern image format providing superior lossy and lossless compression compared to JPEG and PNG. | Standard | — |
| image/x-icon | .ico | ICO format for favicons and Windows application icons. Contains one or more images at multiple sizes. | Vendor | — |
| model/gltf-binary | .glb | Binary GL Transmission Format — a single-file binary version of glTF. | Standard | — |
| model/gltf+json | .gltf | GL Transmission Format — a JSON-based format for 3D scenes and models, the "JPEG of 3D". | Standard | — |
| model/obj | .obj | Wavefront OBJ — a widely supported 3D geometry format used in modelling and game development. | Standard | — |
| model/stl | .stl | STereoLithography — describes the surface geometry of a 3D object. Widely used for 3D printing. | Standard | — |
| multipart/alternative | — | Multiple representations of the same content (e.g. plain text and HTML versions of an email). | Standard | RFC 2046 |
| multipart/byteranges | — | Used in HTTP 206 Partial Content responses to deliver multiple byte ranges of a single resource. | Standard | RFC 9110 |
| multipart/form-data | — | Used for HTML form submissions that include file uploads, with each part separated by a boundary. | Standard | RFC 7578 |
| multipart/mixed | — | A container for multiple body parts of different types — the default multipart subtype. | Standard | RFC 2046 |
| text/calendar | .ics.ifb | iCalendar — the standard format for calendar data exchange. | Standard | RFC 5545 |
| text/css | .css | Cascading Style Sheets — describes the presentation of HTML and XML documents. | Standard | RFC 2318 |
| text/csv | .csv | Comma-Separated Values — a common format for tabular data exchange. | Standard | RFC 4180 |
| text/event-stream | — | Server-Sent Events stream — a persistent HTTP connection over which the server pushes events to the client. | Standard | — |
| text/html | .html.htm | HyperText Markup Language — the standard document format of the World Wide Web. | Standard | RFC 2854 |
| text/javascript | .js.mjs | JavaScript source code. The official MIME type for JS as of RFC 9239, superseding application/javascript. | Standard | RFC 9239 |
| text/markdown | .md.markdown | Markdown-formatted text. Widely used for documentation and README files. | Standard | RFC 7763 |
| text/plain | .txt.text | Plain unformatted text. The default for text files with no specific subtype. | Standard | RFC 2046 |
| text/tab-separated-values | .tsv | Tab-Separated Values — a tabular text format using tab characters as field delimiters. | Standard | — |
| text/uri-list | .uri.uris.urls | A list of URIs, one per line. Used in drag-and-drop operations and link collections. | Standard | RFC 2483 |
| text/vcard | .vcf.vcard | vCard — the standard electronic business card format for contact information. | Standard | RFC 6350 |
| text/xml | .xml | XML document as readable text. Use application/xml when readability by humans is not a concern. | Standard | RFC 7303 |
| video/3gpp | .3gp | 3GPP multimedia container — used for mobile video streaming on 3G networks. | Standard | — |
| video/av1 | .av1 | AV1 video — an open, royalty-free codec with significantly better compression than H.264. | Standard | — |
| video/mp4 | .mp4.m4v | MPEG-4 Part 14 — the dominant web video container, typically carrying H.264/H.265 video and AAC audio. | Standard | — |
| video/mpeg | .mpeg.mpg | MPEG-1/MPEG-2 video — older compressed video formats. | Standard | — |
| video/ogg | .ogv | Ogg video container — typically carries Theora video and Vorbis audio. | Standard | RFC 5334 |
| video/quicktime | .mov.qt | QuickTime Movie — Apple's native video container format. | Standard | — |
| video/webm | .webm | WebM — an open video format developed by Google, carrying VP8/VP9/AV1 video and Vorbis/Opus audio. | Standard | — |
| video/x-msvideo | .avi | Audio Video Interleave — Microsoft's container format for audio and video. | Vendor | — |
