MIME Types Reference
MIME types (Multipurpose Internet Mail Extensions) are internet standard identifiers for file content types, used in HTTP Content-Type headers.
| MIME Type | Extension | Category | Description |
|---|---|---|---|
| text/html | .html | Text | HTML document |
| text/css | .css | Text | CSS stylesheet |
| text/javascript | .js | Text | JavaScript script |
| text/plain | .txt | Text | Plain text |
| text/xml | .xml | Text | XML document |
| text/csv | .csv | Text | CSV comma-separated values |
| text/markdown | .md | Text | Markdown document |
| application/json | .json | Application | JSON data |
| application/xml | .xml | Application | XML data |
| application/pdf | Application | PDF document | |
| application/zip | .zip | Application | ZIP archive |
| application/gzip | .gz | Application | Gzip compressed file |
| application/x-tar | .tar | Application | Tar archive |
| application/octet-stream | .bin | Application | Binary data stream |
| application/x-www-form-urlencoded | - | Application | URL-encoded form data |
| multipart/form-data | - | Application | Multipart form data (file upload) |
| image/jpeg | .jpg | Image | JPEG image |
| image/png | .png | Image | PNG image |
| image/gif | .gif | Image | GIF image |
| image/svg+xml | .svg | Image | SVG vector image |
| image/webp | .webp | Image | WebP image |
| image/x-icon | .ico | Image | Icon file |
| image/bmp | .bmp | Image | BMP bitmap |
| audio/mpeg | .mp3 | Audio | MP3 audio |
| audio/wav | .wav | Audio | WAV audio |
| audio/ogg | .ogg | Audio | OGG audio |
| audio/aac | .aac | Audio | AAC audio |
| video/mp4 | .mp4 | Video | MP4 video |
| video/webm | .webm | Video | WebM video |
| video/x-msvideo | .avi | Video | AVI video |
| font/woff | .woff | Font | WOFF font |
| font/woff2 | .woff2 | Font | WOFF2 font |
| font/ttf | .ttf | Font | TrueType font |
| font/otf | .otf | Font | OpenType font |
Frequently Asked Questions
What is a MIME type?
A MIME type (Content-Type) identifies the format of a file or payload as "type/subtype" (e.g. text/html); the server tells the browser how to parse it via the HTTP response header.
Must the extension match the MIME type?
Not necessarily. Browsers honor the Content-Type response header; the extension is only a convention. A wrong configuration can trigger a download or a security block.
Which MIME type for file uploads?
Use multipart/form-data for forms with files; use application/x-www-form-urlencoded for plain key-value forms.
How do I check a resource MIME type?
Inspect the Content-Type response header in the browser DevTools Network panel, or use the site's request/response parsing tools.