Common media types of archived mobile communication
| Extension | Kind of document | MIME Type | Sample file |
|---|---|---|---|
| .aac | AAC audio | audio/aac |  |
| .abw | AbiWord document | application/x-abiword | |
| .amr | AMR audio | audio/aac |  |
| .arc | Archive document (multiple files embedded) | application/x-freearc | |
| .avif | AVIF image | image/avif | |
| .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 | |
| .cda | CD audio | application/x-cdf | |
| .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 | |
| .gz | GZip Compressed Archive | application/gzip | |
| .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 (Specifications: HTML and RFC 9239) | |
| .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 |  |
| .mp4 | MP4 video | video/mp4 |  |
| .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 | |
| .ogg | OGG audio | audio/ogg | |
| .ogv | OGG video | video/ogg | |
| .ogx | OGG | application/ogg | |
| .opus | Opus audio | audio/opus |  |
| .otf | OpenType font | font/otf | |
| .png | Portable Network Graphics | image/png | |
| Adobe Portable Document Format (PDF) | application/pdf | ||
| .php | Hypertext Preprocessor (Personal Home Page) | application/x-httpd-php | |
| .ppt | Microsoft PowerPoint | application/vnd.ms-powerpoint | |
| .pptx | Microsoft PowerPoint (OpenXML) | application/vnd.openxmlformats-officedocument.presentationml.presentation | |
| .rar | RAR archive | application/vnd.rar | |
| .rtf | Rich Text Format (RTF) | application/rtf | |
| .sh | Bourne shell script | application/x-sh | |
| .svg | Scalable Vector Graphics (SVG) | image/svg+xml | |
| .tar | Tape Archive (TAR) | application/x-tar | |
| .tif, .tiff | Tagged Image File Format (TIFF) | image/tiff | |
| .ts | MPEG transport stream | video/mp2t | |
| .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 | * see below | |
| .xul | XUL | application/vnd.mozilla.xul+xml | |
| .zip | ZIP archive | application/zip | |
| .3gp | 3GPP audio/video container | video/3gpp; audio/3gpp if it doesn't contain video |  |
| .3g2 | 3GPP2 audio/video container | video/3gpp2; audio/3gpp2 if it doesn't contain video | |
| .7z | 7-zip archive | application/x-7z-compressed |
* application/xml is recommended as of RFC 7303 (section 4.1), but text/xml is still used sometimes. You can assign a specific MIME type to a file with .xml extension depending on how its contents are meant to be interpreted. For instance, an Atom feed is application/atom+xml, but application/xml serves as a valid default.
We recommend that you whitelist all media types that are commonly used by your team.