MIME Type Lookup

Look up the MIME type for any file extension

A MIME type (also called a media type or content type) tells software what kind of data a file contains, such as text/html for a web page or image/png for a PNG. Servers send it in the Content-Type header, browsers use it to decide how to handle a download, and APIs use it to validate uploads. Type an extension like pdf or .svg to see its type, or search for a content type like image/ to list every extension that uses it.

The table is fully searchable across the extension, the MIME type, and the description, so you can also look things up by keyword (for example "archive" or "font"). Everything runs in your browser from a built-in list — nothing is uploaded and there are no network calls.

FAQ

What is a MIME type? A short label in the form type/subtype (such as application/json) that identifies the format of a file or HTTP response so software knows how to interpret it.

Where do I use the MIME type? Most commonly in a server's Content-Type response header, in an HTML form's accept attribute, or when setting the type on an uploaded or generated file.

Why do some extensions map to the same type? Different extensions can describe the same format — for example .jpg and .jpeg are both image/jpeg, and .htm and .html are both text/html.

What if my extension is not listed? When a type is unknown, servers fall back to application/octet-stream, which means "arbitrary binary data" and prompts a download rather than inline display.