File Extensions Reference
Common file extensions with MIME types, categories, and descriptions for quick lookup.
Last updated: 2026-08-28
| extension | mimeType | category | description |
|---|---|---|---|
| .html | text/html | Web | HTML document (web page) |
| .htm | text/html | Web | HTML document (alternate extension) |
| .css | text/css | Web | CSS stylesheet |
| .js | text/javascript | Web | JavaScript source code |
| .mjs | text/javascript | Web | JavaScript ES module |
| .ts | text/typescript | Web | TypeScript source code |
| .jsx | text/jsx | Web | React JSX component |
| .tsx | text/tsx | Web | React TypeScript component |
| .vue | text/vue | Web | Vue.js single-file component |
| .json | application/json | Data | JSON data interchange format |
| .xml | application/xml | Data | XML document |
| .yaml | application/yaml | Data | YAML configuration file |
| .yml | application/yaml | Data | YAML configuration file (alternate) |
| .toml | application/toml | Data | TOML configuration file |
| .csv | text/csv | Data | Comma-separated values |
| .tsv | text/tab-separated-values | Data | Tab-separated values |
| .txt | text/plain | Data | Plain text file |
| .md | text/markdown | Data | Markdown document |
| application/pdf | Document | PDF document | |
| .doc | application/msword | Document | Microsoft Word document (legacy) |
| .docx | application/vnd.openxmlformats-officedocument.wordprocessingml.document | Document | Microsoft Word document (OOXML) |
| .xls | application/vnd.ms-excel | Document | Microsoft Excel spreadsheet (legacy) |
| .xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | Document | Microsoft Excel spreadsheet (OOXML) |
| .ppt | application/vnd.ms-powerpoint | Document | Microsoft PowerPoint (legacy) |
| .pptx | application/vnd.openxmlformats-officedocument.presentationml.presentation | Document | Microsoft PowerPoint (OOXML) |
| .odt | application/vnd.oasis.opendocument.text | Document | OpenDocument text |
| .rtf | application/rtf | Document | Rich text format |
| .jpg | image/jpeg | Image | JPEG image (lossy) |
| .jpeg | image/jpeg | Image | JPEG image (alternate extension) |
| .png | image/png | Image | PNG image (lossless) |
| .gif | image/gif | Image | GIF image (animated supported) |
| .bmp | image/bmp | Image | Bitmap image |
| .webp | image/webp | Image | WebP image (modern, efficient) |
| .svg | image/svg+xml | Image | SVG vector image |
| .ico | image/x-icon | Image | Icon file (favicon) |
| .tiff | image/tiff | Image | TIFF image (high quality) |
| .avif | image/avif | Image | AVIF image (next-gen) |
| .mp3 | audio/mpeg | Audio | MP3 audio (lossy) |
| .wav | audio/wav | Audio | WAV audio (uncompressed) |
| .ogg | audio/ogg | Audio | OGG audio (open format) |
| .flac | audio/flac | Audio | FLAC audio (lossless) |
| .aac | audio/aac | Audio | AAC audio (advanced coding) |
| .mp4 | video/mp4 | Video | MP4 video |
| .webm | video/webm | Video | WebM video (web-optimized) |
| .avi | video/x-msvideo | Video | AVI video (legacy) |
| .mov | video/quicktime | Video | QuickTime video |
| .mkv | video/x-matroska | Video | Matroska video |
| .zip | application/zip | Archive | ZIP archive |
| .tar | application/x-tar | Archive | TAR archive (uncompressed) |
| .gz | application/gzip | Archive | Gzip compressed file |
| .tar.gz | application/gzip | Archive | Gzipped TAR archive |
| .bz2 | application/x-bzip2 | Archive | Bzip2 compressed file |
| .7z | application/x-7z-compressed | Archive | 7-Zip archive |
| .rar | application/vnd.rar | Archive | RAR archive |
| .py | text/x-python | Code | Python source code |
| .java | text/x-java-source | Code | Java source code |
| .c | text/x-c | Code | C source code |
| .cpp | text/x-c++ | Code | C++ source code |
| .h | text/x-c | Code | C/C++ header file |
| .go | text/x-go | Code | Go source code |
| .rs | text/rust | Code | Rust source code |
| .rb | text/x-ruby | Code | Ruby source code |
| .php | application/x-httpd-php | Code | PHP source code |
| .sh | application/x-sh | Code | Shell script |
| .swift | text/x-swift | Code | Swift source code |
| .kt | text/x-kotlin | Code | Kotlin source code |
| .wasm | application/wasm | Binary | WebAssembly binary |
| .exe | application/x-msdownload | Binary | Windows executable |
| .dll | application/x-msdownload | Binary | Windows dynamic-link library |
| .so | application/x-sharedlib | Binary | Linux shared library |
| .bin | application/octet-stream | Binary | Generic binary data |
| .ttf | font/ttf | Font | TrueType font |
| .otf | font/otf | Font | OpenType font |
| .woff | font/woff | Font | Web Open Font Format |
| .woff2 | font/woff2 | Font | Web Open Font Format 2.0 |