MIME Type Lookup
Find the Content-Type value you need for a web server, upload validation, API response or static asset. Search by file extension or MIME string, then copy the matching value without an external lookup.
🔒 100% private — files never leave your browser
Try .json, image/png, application/pdf or spreadsheet.
| Extension | MIME type | Description |
|---|
How to use the MIME Type Lookup
- 1 Search for an extension such as .json or a type such as image/png.
- 2 Review the matching extension, MIME type and description.
- 3 Copy the type into your server config, HTTP header or upload validation rule.
Frequently asked questions
What is a MIME type?
A MIME type, also called a media type, describes the format of a file or HTTP payload, such as application/json or image/png.
Does a file extension prove the content type?
No. Extensions are only hints and can be renamed. For uploads, validate the actual content and apply safe handling in addition to checking a declared type.
Does this lookup need an internet connection?
No. It searches a built-in list of common types locally in your browser.
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