UtilityKit

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MIME Type Lookup

Find MIME types from extensions and reverse-map MIME to extensions.

About MIME Type Lookup

MIME Type Lookup provides quick extension-to-MIME and MIME-to-extension mapping for common file types. It is useful for Content-Type headers, upload validation, and debugging file handling behavior across APIs, CDN rules, browser previews, and download response workflows.

Why use MIME Type Lookup

  • Set correct Content-Type values
  • Validate file-type mappings
  • Resolve extension ambiguity quickly

How to use MIME Type Lookup

  1. Choose lookup direction
  2. Enter extension or MIME
  3. Run lookup and copy result

When to use MIME Type Lookup

  • API file uploads
  • Static asset serving
  • Download/debug header checks

Frequently Asked Questions

Can I include leading dot in extension?

Yes.

Why are multiple extensions shown?

Some MIME types map to several common extensions.

Does it detect MIME from file bytes?

No, this is map-based lookup.

Is internet required?

No.

Is data sent anywhere?

No.

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