Syntax and canonical form

Content-Type Validator

Paste a Content-Type or MIME type value to check its syntax and canonical form. This tool validates the value itself; it does not identify a file's MIME type or inspect file contents.

Check a value

Content-Type value

Enter only the header value, without the Content-Type: field name.

Example values

text/plain
application/json; charset=utf-8
application/vnd.example+json
text/html; charset="UTF-8"

Working with other structured formats?

Validate and repair calendar files with CorrectICS, contact files with CorrectVCF, RSS/Atom/OPML feeds with CorrectFeed, or browse all CorrectFormats tools.