MIME Type Checker

Select a local file to inspect the MIME type reported by your browser, file extension, size and basic metadata. Your file stays in your browser.

How to Use the MIME Type Checker

Select or inspect a file to identify its MIME type, which describes the file format used by browsers, servers and APIs. MIME information is useful when validating uploads, configuring HTTP responses or debugging file handling.

Practical Example

A PNG image should normally be identified as image/png, while a PDF should use application/pdf.

Factors That Affect the Result

File extension, detected file signature, browser support and the information available to the tool can influence the reported type. Extensions alone are not always reliable evidence of a file’s real format.

Frequently Asked Questions

What is a MIME type?

A MIME type is a standardized label that describes the nature and format of a file or response body.

Is a file extension the same as a MIME type?

No. Extensions are filename conventions, while MIME types are media-type identifiers used by software and protocols.

Why is the MIME type important?

Correct MIME types help browsers and applications process content safely and correctly.