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MIME type list/extension search tool

You can search for MIME types, extensions, and usages, create Content-Type headers, and check local file determination results.

Search MIME type/extension

/You can also move to the search field using the key. Example:json, .webp, audio, +xml

MIME type list

Select a row to see its usage, example HTTP headers, aliases, and security notes.

Showing 0 items

Purpose

application/json

Associated MIME types

Estimate local file MIME type

File contents are not loaded, the extension and browser provideFile.typeagainst the built-in dictionary.

Content-Type/Content-Disposition generation

Create an example HTTP response header from the MIME type, character code, and save file name.

About this tool

You can check MIME types, set Content-Type for web servers and APIs, and reverse lookup from extensions on one page.

Features

  • MIME types and common extensions
  • Filter by category, registration status, data format, and compression characteristics
  • Sort by table headers and save search conditions in the URL
  • Content-Type, Content-Disposition, nosniff header generation

Notes

  • The file contents cannot be guaranteed just by the extension. Also perform content inspection on untrusted files.
  • browserFile.typedepends on the OS, browser, and extension, and may be empty.
  • When serving active content, also consider CSP and forced downloads.

Data confirmation date: / Reference: IANA Media Types Registry, RFC 6838, WHATWG MIME Sniffing

Related tools / Guides and troubleshooting

Related tools

Guides and troubleshooting

Privacy: Search, file identification, header generation, and copying are performed within the browser, and files and input contents are not sent or saved to the Develop Tools server.