File Kit
MIME type inspector
Compare the type your browser reports, the type the bytes show and the type the extension suggests, with plain explanations.
- 1Add your file files
- 2Pick options
- 3Click Run
- 4Download result
Limits
- The browser's "reported" type comes from the file name only; it is never read from the contents.
- The detected type uses the same signature table as the File type detector (about 60 formats).
- The extension table covers common extensions; unusual ones show as unknown.
Ask the AI chat
The AI chat can run this tool for you. Try:
- “what is the mime type of this file”
- “check the content type of this upload”
- “inspect this file mime”