MIME Type Checker
Filesion's MIME Type Checker is a professional tool for identifying exact file headers and content types. Audit multiple files instantly and privately using our browser-based detection logic—no server uploads, 100% data security.
Features
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Instant Check
Quickly identify any file's MIME type for proper web development handling.
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Dev Friendly
Validate file headers and content types for your backend integrations.
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Privacy First
File headers are examined locally. Your data is never sent to a server.
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Batch Audit
Drop multiple files to audit their content types and export to CSV.