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MIME Types Reference

Find the correct Content-Type header for any file extension. Search 150+ MIME types across web, image, video, audio, font, and document categories.

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Extension(s) MIME Type (Content-Type) Category

What is MIME Types Reference?

MIME Types Reference maps file extensions and media types so you can find the correct Content-Type header for web responses, uploads, and assets. It is useful for API work, static file serving, storage rules, and browser compatibility debugging.

How to Use MIME Types Reference

  1. Search by file extension or MIME type string.
  2. Review the matching content type and any common usage notes.
  3. Use the mapping in server config, API headers, or upload validation.
  4. Double-check edge cases such as fonts, JSON, media, or binary files.

Quick Guides

MIME Types Guide explains common Content-Type headers, image media types, and the most common mistakes in file delivery.

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Understand MIME Types Reference ▾
Example
Input .pdf →application/pdf
Output .json →application/json
Common Use Cases
  • Look up correct Content-Type headers for files and API responses
  • Check MIME mappings for extensions used in uploads and downloads
  • Verify browser-serving behavior when debugging static assets
  • Use as a quick reference while configuring servers, CDNs, or APIs
Why Use This Tool
  • Useful for APIs, static assets, uploads, and server configuration.
  • Helps prevent wrong Content-Type headers and browser handling bugs.
  • Works as a quick in-browser reference while you build or debug.
Frequently Asked Questions
What MIME type should I use for JSON API responses?

Use application/json with charset=utf-8.

What is application/octet-stream used for?

It is the generic binary MIME type —browsers treat it as a download prompt when served as a response.

What does MIME Types Reference —File Extension to Content-Type Guide do?

MIME Types Reference —File Extension to Content-Type Guide runs entirely in your browser and helps you complete this task without uploading data to a server.

Is MIME Types Reference —File Extension to Content-Type Guide free to use?

Yes. This tool is free to use and does not require sign-up.