MIME Type Checker
Look up MIME type by file extension, or find extensions for a given MIME type.
About MIME Type
Looks up the MIME type associated with a file extension, or works in reverse to find which extensions correspond to a given MIME type. Getting a MIME type wrong in server config or an application's Content-Type header can cause a browser to render a file incorrectly, refuse to display it inline when it should, or trigger a download prompt for content meant to display directly. Useful when configuring a web server's MIME type mappings for an uncommon file extension.
Some browsers will still "sniff" the actual file content and override an incorrect declared MIME type as a compatibility fallback — but this is inconsistent across browsers, exactly the kind of inconsistency a correct Content-Type header avoids relying on.