MIME Type & File Extension Lookup
Runs 100% in your browser — your files never leave your device.
Upload validation, Content-Type headers, and download responses all depend on matching the right media type to a file extension. Search by extension such as json or png, or by MIME text such as application/pdf, and inspect every matching mapping.
How it works
- 1
Search an extension or MIME type
- 2
Review matching mappings
- 3
Use the charset and content type
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