MIME Type Lookup
Search by extension or MIME type — both directions. Useful for HTTP Content-Type headers and upload validation.
No matching MIME type.
How to Use
Type ".pdf", "png", "application/json", or "image/" — all work. The leading dot is optional.
Use the chip filter (image / audio / video / application / text / font) to narrow down.
Clicking an extension or MIME copies it to your clipboard.
FAQ
An extension matches multiple MIME types.
E.g. .json is officially application/json, but some systems use text/json. The most common is listed first.
What is application/octet-stream?
A "binary blob" fallback used when the server can't determine the type. Often paired with Content-Disposition: attachment to force download.
multipart/form-data vs application/x-www-form-urlencoded?
Use multipart for forms with files; URL-encoded for plain text fields only. File uploads need multipart.
Why is charset shown?
For text/* types, sending charset=utf-8 alongside the Content-Type is recommended to prevent character encoding issues.
Is anything sent to a server?
No. The data ships with the page; nothing leaves your browser.
