files · integrity

SHA-1 File Hash

Computes the SHA-1 digest of any file in your browser and exports it in the standard checksum format ("<hex> <filename>") that sha1sum/md5sum-style tools verify. SHA-1 suits integrity checks and Git-style identifiers; it is deprecated for signatures.

Workspace Files stay on your device

A little guidance. A better result.

How to use SHA-1 File Hash

SHA-1 digest in sha1sum format; WebCrypto, in your browser.

Prepare your input
Choose a file.
Use the workspace
Compute its SHA-1 digest in the browser.
Check your result
Compare the full checksum with a trusted reference.

Know the limits

SHA-1 is unsuitable for collision-resistant security uses; prefer a modern digest when you control the choice.

Where does my input go?

This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.

Read the privacy details →

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