Extension — MIME lookup.. MIME Types is a free online tool from the ToolsRift Developer Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Search by file extension or MIME type to find the matching media type used in Content-Type headers, uploads and downloads across the web.
A media type string like text/html or image/png that tells clients how to interpret a file's contents, sent in the Content-Type header.
Browsers may refuse to run scripts or render images if the declared type is wrong, so serving the correct Content-Type matters.
application/octet-stream is the generic binary fallback, prompting a download rather than inline rendering.