Free · Read the first bytes of a file
Magic Bytes Viewer
See the file header as hex and plain characters beside the detected binary type.
- Real magic-byte check
- Private in your browser
- JSON report
Open a local file
The file stays in this browser tab. Detection uses its binary signature, not just its name.
Drop one file hereUp to 100.0 MB
Files stay in this tab. The checker reads bytes but never opens or runs the file.
ResultReading the safe sample
Reading the signatureThe file is not opened or run.
A useful hint, not proof. A matching signature does not prove that a file is complete, valid, or safe. This tool does not scan for viruses.
Three simple steps
How to use it
- Open the binary file you want to study.
- Read the first bytes in hex and text form.
- Compare the header with the detected type.
Your files stay on this device
file-type reads the binary signature inside this browser tab. Bookify does not upload, save, open, or run the file. The result is a best-effort hint, not proof that a file is valid or safe.