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Fake MIME Type Generator

Used by developers, writers, and creators worldwide.

A fake MIME type generator gives you file extensions paired with their correct MIME types for reference, testing, and documentation. MIME types tell browsers and servers what kind of content a file is, and code that serves files, validates uploads, or sets a Content-Type header needs the right type for each extension. This tool lists common extensions alongside their accurate MIME types. Choose how many you want and copy them in. It is ideal for configuring a server, testing upload validation, and learning MIME types. Each extension is paired with its genuine MIME type — .json with application/json, .png with image/png — so you can trust the mapping while you build or study. Getting the Content-Type right matters: serve a file with the wrong type and a browser may refuse to render it, or worse, mishandle it.

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Free forever — no account required

How to use

  1. Choose your options above
  2. Click Generate
  3. Copy your result

Detailed instructions

  1. Choose how many pairings you want.
  2. Click Generate to produce MIME types.
  3. Use them to set Content-Type headers.
  4. Reference the correct type per extension.

Use Cases

  • •Configuring Content-Type headers
  • •Testing upload validation
  • •Learning common MIME types
  • •Documenting file handling
  • •Looking up an extension's type

Tips

  • →Set the correct Content-Type for files.
  • →The wrong type can break rendering.
  • →Each extension maps to a real type.
  • →Use it as a quick reference.

FAQ

what is a MIME type

A MIME type is a label like application/json or image/png that tells software what kind of content a file holds. Servers send it in the Content-Type header so browsers know how to handle the response — render it, download it, or play it.

are the pairings correct

Yes. Each file extension is paired with its genuine, standard MIME type, so .json maps to application/json and .svg to image/svg+xml. The mappings are accurate and reliable for reference, testing, and configuration.

why does the right MIME type matter

If a file is served with the wrong Content-Type, a browser may refuse to render it, download it unexpectedly, or even mishandle it in a way that causes security issues. Setting the correct type ensures content is handled as intended.