Developer ToolsDebugging ToolsFree Tool
MIME Type Checker
Get a quick file-extension-based MIME type reference — this page cannot inspect a real file's actual content-type from your browser.
How to Use MIME Type Checker
- 1Click Process to see the reference recommendation
- 2Look up your file extension at mime.io, or run curl -I on a URL for the real server-declared Content-Type
Frequently Asked Questions
No — clicking Process shows a fixed message pointing you to a file-extension reference (mime.io); it doesn't accept a file upload or inspect any actual file content or server Content-Type header.
Run `curl -I <url>` from your terminal and look at the Content-Type response header, which reflects what the server actually declares — more reliable than guessing from the file extension alone.
No — a server can send any Content-Type regardless of the file's extension; the extension is just a common convention, not a guarantee.
No — since no real file is inspected, nothing you enter is transmitted.
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