MIME Type Lookup
Look up MIME types by extension or media type.
| MIME type | Extensions | Description |
|---|---|---|
| application/json | .json | JSON data |
| application/xml | .xml | XML document |
| application/pdf | Portable Document Format | |
| application/zip | .zip | ZIP archive |
| application/gzip | .gz | GZIP compressed file |
| application/octet-stream | .bin | Generic binary data |
| application/javascript | .js, .mjs | JavaScript source |
| application/typescript | .ts | TypeScript source |
| application/x-yaml | .yaml, .yml | YAML document |
| application/x-toml | .toml | TOML configuration |
| application/x-www-form-urlencoded | - | HTML form submission |
| application/vnd.ms-excel | .xls | Legacy Excel spreadsheet |
| application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | .xlsx | Excel spreadsheet |
| application/vnd.openxmlformats-officedocument.wordprocessingml.document | .docx | Word document |
| text/plain | .txt, .log | Plain text |
| text/html | .html, .htm | HTML document |
| text/css | .css | CSS stylesheet |
| text/csv | .csv | Comma-separated values |
| text/markdown | .md, .markdown | Markdown document |
| text/javascript | .js | JavaScript text |
| image/png | .png | PNG image |
| image/jpeg | .jpg, .jpeg | JPEG image |
| image/gif | .gif | GIF image |
| image/webp | .webp | WebP image |
| image/svg+xml | .svg | SVG vector image |
| image/x-icon | .ico | Icon file |
| audio/mpeg | .mp3 | MP3 audio |
| audio/wav | .wav | WAV audio |
| video/mp4 | .mp4 | MP4 video |
| video/webm | .webm | WebM video |
| font/woff2 | .woff2 | WOFF2 web font |
| multipart/form-data | - | Form upload with files |
Every file upload, HTTP response, and API payload uses a MIME type to describe its format - but remembering whether `.json` maps to `application/json` or whether `.svg` is `image/svg+xml` slows down development. Utilitoo's MIME Type Lookup provides a searchable reference of common MIME types, file extensions, and plain-language descriptions.
Web developers setting Content-Type headers, backend engineers validating upload filters, DevOps teams configuring CDN caching rules, and technical writers documenting file support all need a fast MIME reference without digging through IANA registries.
Search by extension like `.pdf`, by MIME type like `text/html`, or by keyword like image or video. Extension matches highlight at the top when you search a dotted suffix. Pair with HTTP Header Viewer when inspecting response headers or HTTP Status Codes when debugging API responses.
The reference loads entirely in your browser on Utilitoo. No uploads and no account required. Free for developers, sysadmins, and API designers who work with files and HTTP content types daily.
MIME Type Lookup helps interpret network and protocol details during debugging. Look up MIME types by extension or media type. Treat geolocation and vendor metadata as hints - routing and policy decisions need authoritative sources.
Common use cases
- Debugging a failing API or config by running MIME Type Lookup on a staging sample before changing production.
- Preparing mime type lookup output to paste into a pull request, incident ticket, or team chat.
- Checking third-party mime type lookup payloads before wiring them into application code.
- Teaching mime type lookup concepts in a workshop without installing CLI tooling on every laptop.
- Comparing MIME Type Lookup output with a teammate during pair review when formats disagree.
Tips & common mistakes
MIME Type Lookup runs in your browser on Utilitoo - paste staging payloads without a server upload. Start with a small sample to confirm format, then process the full input. If output looks wrong, check truncation, encoding, and mixed line endings from terminals or log viewers. Pin the tab during active debugging and chain Related Tools instead of returning to the homepage.
Common errors
- Unexpected output from MIME Type Lookup - double-check input format, encoding, and whether the paste was truncated.
- Browser limits - very large inputs may slow the tab; split into smaller chunks if performance drops.
How to use
- Search by extension such as .json or by MIME type such as image/png.
- Review matching entries in the table.
- Use the result in headers or upload validation.
Frequently Asked Questions
What is a MIME type?▼
A MIME type (media type) identifies the format of a file or HTTP body, such as text/html or application/json.
How do I find the MIME type for a file extension?▼
Search the extension in Utilitoo, for example .png or .json, to see matching MIME types and descriptions.
Can I search by MIME type instead of extension?▼
Yes. Enter a full MIME type like image/webp or application/pdf to find matching entries.
Are all MIME types included?▼
Utilitoo covers the most common web, developer, and document MIME types used in HTTP and file uploads.
Is lookup data sent to a server?▼
No. The reference and search run entirely in your browser on Utilitoo.
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