MIME Type Lookup
Find the correct MIME type for any file extension. Search 140+ registered IANA media types with usage, security and application notes — all in your browser.
MIME Type Lookup
Try an extension like .pdf or a type like application/json.
Search any MIME type
Enter an extension or media type above to see its IANA registration status, aliases, common applications and security notes.
Esc Clear search and filters Ctrl+Enter Copy first result Ctrl+C Copy focused MIME type
How It Works
Search a type
Type an extension like .pdf or a full type like application/json.
Instant match
Results appear instantly from a built-in reference of 140+ media types.
Copy or export
Copy any MIME type with one click, or export the whole set as JSON, TXT or CSV.
Frequently Asked Questions
What is a MIME type?
A MIME type is a two-part identifier — like application/json — that tells a client the type and format of a file or response body.
MIME type vs file extension?
A file extension is a suffix like .png, while a MIME type like image/png is a standardized media identifier used in Content-Type headers.
Text vs binary types?
Text types store readable characters and can carry a charset. Binary types like image/png store raw bytes and must not be altered.
Is it the same as Content-Type?
Almost. The Content-Type header is the MIME type plus an optional charset, for example text/html; charset=utf-8.
What does IANA mean?
IANA (Internet Assigned Numbers Authority) maintains the official registry of standardized MIME media types.
Where does my search go?
Nowhere. Every search is processed 100% in your browser — nothing is sent to a server.