Micro Tools
Advertisement

MIME Type Lookup

Look up the MIME type for any file extension, or find extensions for a MIME type. Searchable developer reference.

Search MIME types

Type an extension like png or a type like application/json.

Search matches both directions at once.

Results

Advertisement

How the lookup works

One search box matches both directions: type png to see image/png, or type application/json to find the json extension. The leading dot is optional, and matching is case-insensitive, so PDF, .Pdf and pdf all work.

Why MIME types matter

Servers use the Content-Type header to tell browsers what a file is. A wrong MIME type is why a download opens as text, a font fails to load, or a video refuses to play. Looking up the correct type is the first step in fixing those bugs.

Related tools

JSON formatterFormat and validate JSON, privately. Regex testerTest regex live with highlighting. Base64 encoderBase64 encode and decode, plus URL encoder and JWT decoder.

MIME Type Lookup FAQs

What is the MIME type of a PDF?
application/pdf. It is one of the most looked-up types because servers must send it for in-browser PDF viewers to open the file instead of downloading it.
Why do .jpg and .jpeg share a type?
They are the same format with two historical extensions. Both map to image/jpeg, so servers and browsers treat them identically.
What MIME type should I use for WOFF2 fonts?
font/woff2. Serving fonts with the wrong type (like application/octet-stream) triggers console warnings and can block loading in strict browsers.
My server sends the wrong type. How do I fix it?
Add the extension-to-type mapping in your server config: .htaccess AddType directives for Apache, mime.types for Nginx, or a static file config on your host or CDN.
Are all 60+ types here exhaustive?
No. These are the common web types. Thousands of vendor-specific types exist (like application/vnd.*); this covers what web developers look up most.
Advertisement