File Type Identifier

What is File Type Identifier?

File Type Identifier detects the true format of any file by reading its binary signature (magic bytes) — not just the extension. Useful for identifying renamed or extensionless files and verifying that a file is what it claims to be.

How to use

1. Step 1 — Drop or select a file whose type you want to identify.
2. Step 2 — The tool reads the file's binary header and matches it against known signatures.
3. Step 3 — View the detected MIME type, file extension, and a description of the format.

Result

A colleague sent 'report' with no extension: drop it in to discover it's actually a application/pdf — rename it to report.pdf and open normally.

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