MIME (Multipurpose Internet Mail Extensions) 是描述消息内容类型的因特网标准。MIME 消息能包含文本、图像、音频、视频以及其他应用程序专用的数据。
| 扩展名 | 文档类型 | MIME 类型 |
| .aac | AAC audio | audio/aac |
| .abw | AbiWord document | application/x-abiword |
| .arc | Archive document (multiple files embedded) | application/x-freearc |
| .avi | AVI: Audio Video Interleave | video/x-msvideo |
| .azw | Amazon Kindle eBook format | application/vnd.amazon.ebook |
| .bin | Any kind of binary data | application/octet-stream |
| .bmp | Windows OS/2 Bitmap Graphics | image/bmp |
| .bz | BZip archive | application/x-bzip |
| .bz2 | BZip2 archive | application/x-bzip2 |
| .csh | C-Shell script | application/x-csh |
| .css | Cascading Style Sheets (CSS) | text/css |
| .csv | Comma-separated values (CSV) | text/csv |
| .doc | Microsoft Word | application/msword |
| .docx | Microsoft Word (OpenXML) | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| .eot | MS Embedded OpenType fonts | application/vnd.ms-fontobject |
| .epub | Electronic publication (EPUB) | application/epub+zip |
| .gif | Graphics Interchange Format (GIF) | image/gif |
| .htm .html | HyperText Markup Language (HTML) | text/html |
| .ico | Icon format | image/vnd.microsoft.icon |
| .ics | iCalendar format | text/calendar |
| .jar | Java Archive (JAR) | application/java-archive |
| .jpeg .jpg | JPEG images | image/jpeg |
| .js | JavaScript | text/javascript |
| .json | JSON format | application/json |
| .jsonld | JSON-LD format | application/ld+json |
| .mid .midi | Musical Instrument Digital Interface (MIDI) | audio/midi audio/x-midi |
| .mjs | JavaScript module | text/javascript |
| .mp3 | MP3 audio | audio/mpeg |
| .mpeg | MPEG Video | video/mpeg |
| .mpkg | Apple Installer Package | application/vnd.apple.installer+xml |
| .odp | OpenDocument presentation document | application/vnd.oasis.opendocument.presentation |
| .ods | OpenDocument spreadsheet document | application/vnd.oasis.opendocument.spreadsheet |
| .odt | OpenDocument text document | application/vnd.oasis.opendocument.text |
| .oga | OGG audio | audio/ogg |
| .ogv | OGG video | video/ogg |
| .ogx | OGG | application/ogg |
| .otf | OpenType font | font/otf |
| .png | Portable Network Graphics | image/png |
| Adobe Portable Document Format (PDF) | application/pdf | |
| .ppt | Microsoft PowerPoint | application/vnd.ms-powerpoint |
| .pptx | Microsoft PowerPoint (OpenXML) | application/vnd.openxmlformats-officedocument.presentationml.presentation |
| .rar | RAR archive | application/x-rar-compressed |
| .rtf | Rich Text Format (RTF) | application/rtf |
| .sh | Bourne shell script | application/x-sh |
| .svg | Scalable Vector Graphics (SVG) | image/svg+xml |
| .swf | Small web format (SWF) or Adobe Flash document | application/x-shockwave-flash |
| .tar | Tape Archive (TAR) | application/x-tar |
| .tif .tiff | Tagged Image File Format (TIFF) | image/tiff |
| .ttf | TrueType Font | font/ttf |
| .txt | Text, (generally ASCII or ISO 8859-n) | text/plain |
| .vsd | Microsoft Visio | application/vnd.visio |
| .wav | Waveform Audio Format | audio/wav |
| .weba | WEBM audio | audio/webm |
| .webm | WEBM video | video/webm |
| .webp | WEBP image | image/webp |
| .woff | Web Open Font Format (WOFF) | font/woff |
| .woff2 | Web Open Font Format (WOFF) | font/woff2 |
| .xhtml | XHTML | application/xhtml+xml |
| .xls | Microsoft Excel | application/vnd.ms-excel |
| .xlsx | Microsoft Excel (OpenXML) | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| .xml | XML | application/xml |
| .xul | XUL | application/vnd.mozilla.xul+xml |
| .zip | ZIP archive | application/zip |
| .3gp | 3GPP audio/video container | video/3gpp audio/3gpp（若不含视频） |
| .3g2 | 3GPP2 audio/video container | video/3gpp2 audio/3gpp2（若不含视频） |
| .7z | 7-zip archive | application/x-7z-compressed |
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