📋 MIME Type Checker

500+ File Extensions · Content-Type Lookup · Fast Search

Extension → MIME MIME → Extension

❓ Frequently Asked Questions

What is a MIME type?

MIME (Multipurpose Internet Mail Extensions) types are the standard for identifying file formats on the internet. They consist of type/subtype, e.g. text/html, image/png, application/json. Browsers and servers use the Content-Type header with MIME types to determine how to handle files — whether to render as a webpage, display as an image, or trigger a download.

How do I find a MIME type by extension?

Enter a file extension (e.g. .pdf or pdf) into the search box and you'll get the corresponding MIME type (e.g. application/pdf) along with a description and common use case. You can also search by MIME type to find matching extensions.

What's the relationship between MIME type and Content-Type?

Content-Type is the HTTP header field whose value is the MIME type. When a browser requests a file, the server sets the Content-Type response header to tell the browser what kind of file it is. Correct MIME type configuration is crucial for web security and proper file handling.

Why does my downloaded file display as garbled text?

This usually happens when the server returns an incorrect Content-Type. For example, if the server returns text/plain for a .json file instead of application/json, the browser won't apply syntax highlighting. Proper MIME type configuration ensures files are handled correctly.