MIME Type Lookup

How to use this MIME type lookup

  1. Type a file extension (like .json) to find its MIME type.
  2. Or type a MIME type (like image/png) to find matching extensions.
  3. Leave it empty to browse a list of common types.

What is a MIME type?

A MIME type (Multipurpose Internet Mail Extensions) tells a browser or server what kind of file it's dealing with — used in the Content-Type HTTP header, file uploads, and email attachments to determine how content should be handled.

What happens if the wrong MIME type is sent?

Browsers may refuse to render the file correctly, download it instead of displaying it, or in some cases even ignore it entirely as a security precaution.

Can one extension have multiple MIME types?

Rarely, but it can happen due to historical inconsistencies between systems. When in doubt, use the officially registered IANA MIME type for that format.