MIME Type & File Extension Reference

Look up standard MIME media types and corresponding file extensions from built-in static tables.

How It Works & Processing Standards

Look up standard MIME media types and corresponding file extensions from built-in static tables.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

MIME Type & File Extension Reference is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use MIME Type & File Extension Reference

  1. 1
    Search Extension or TypeType an extension (e.g. avif, mp4, woff2) or MIME string.
  2. 2
    Inspect Media DetailsRead corresponding Content-Type headers and standard extensions.

Common Use Cases

  • Setting static file headers in Nginx or Apache, verifying file upload security, and CDN caching config
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