Santekno/tools

MIME Type Lookup

Look up MIME types by file extension or vice versa. 100+ common types from IANA.

Processed in your browserUpdated · Jan 2026
Input
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Output
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How to use MIME Type Lookup

Paste your input on the left, choose the options you want, and the output appears instantly on the right. Everything runs in your browser — none of your data is sent to a server.

  • Paste or type your input in the INPUT panel
  • The output regenerates automatically as you type
  • Use Copy to put the result in your clipboard
  • Click Sample to load a working example

What is MIME Type Lookup?

Quick MIME type reference for setting Content-Type headers, validating file uploads, or configuring HTTP responses. Bidirectional: enter ".png" to get image/png, or "image/png" to get .png. Includes office documents, archives, audio, video, fonts, and source code. This tool is part of santekno's developer toolbox — a curated collection of utilities built for engineers who care about speed, privacy, and simplicity.

Common use cases

  • Debugging API payloads and integration issues
  • Inspecting tokens, hashes, or encoded strings during development
  • Generating fixtures and sample data for tests
  • Sharing readable output with teammates in code reviews

FAQ

MIME (Multipurpose Internet Mail Extensions) type identifies the format of a file/payload. Used in Content-Type headers and file uploads.

Historical naming. The standard MIME type is image/jpeg, but the extension was shortened to .jpg for older filesystems.

Use application/octet-stream as a safe fallback for unknown binary types, or text/plain for unknown text.

Yes — types like application/vnd.openxmlformats-officedocument.wordprocessingml.document (docx) are included.

It covers ~100 most common types. For a complete list, see IANA Media Types registry.