What is a MIME type?
A MIME type tells browsers and servers what kind of content a file contains, used in HTTP headers, file uploads, and email attachments. Setting the wrong MIME type can cause files to display or download incorrectly.
MIME Type Lookup
Type a file extension to instantly find its correct MIME type.
How it works
- 1
Type a code, extension, or keyword.
- 2
Browse the matching reference entries.
- 3
Copy the detail you need.
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use MIME Type Lookup
Search in MIME Type Lookup to look up reference values. Results come from the built-in dataset on this page.
Tips for better results
Try partial matches if the exact code is unknown.
Privacy and offline-friendly processing
Whenever possible, MIME Type Lookup processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Do I need to include the dot in the extension?
No, the tool works whether you type "png" or ".png".
What if my extension isn’t in the list?
The tool falls back to "application/octet-stream", the generic MIME type for unknown binary content.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is MIME Type Lookup free to use?
Yes. MIME Type Lookup is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does MIME Type Lookup work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.