Question 1

What is a MIME type?

Accepted Answer

MIME type (also called media type) is a standard string used to identify file formats, like image/png, application/json. Servers use the Content-Type header to tell browsers how to handle the returned content, commonly used in frontend uploads, downloads, and setting response headers.

Question 2

Does this tool support reverse lookup?

Accepted Answer

Yes. You can input an extension (e.g., png) to find its MIME type, or input a MIME type (e.g., application/pdf) or keywords to reverse search for the corresponding extension. The search box matches both ways in real-time.

Question 3

Why might one extension have multiple MIME types?

Accepted Answer

Some formats have historical or vendor differences, e.g., .js can be text/javascript or previously application/javascript. This table includes current recommended or most common usages; actual usage depends on your platform or specification requirements.

MIME Type Lookup

Frequently Asked Questions