File Type Identifier
Identify unknown file types
Drop a file to identify
Any file type
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
- Step 1 — Drop or select a file whose type you want to identify.
- Step 2 — The tool reads the file's binary header and matches it against known signatures.
- 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.