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Ilmainen File Hash / Checksum

Compute SHA-256, SHA-1, SHA-384, and SHA-512 checksums of any file and verify a download against its published hash. The file is never uploaded.

Ei tiedostokokorajoitustaTiedostot pysyvät yksityisinäEi kirjautumista tarvitaIlmainen ikuisesti

Pudota tiedostot tähän tai napsauta selataksesi

Any file ei tiedostokokorajoitusta

Selaa tiedostoja

Tiedostosi eivät koskaan poistu laitteeltasi. Kaikki käsittely tapahtuu paikallisesti selaimessasi.

Compute SHA-256, SHA-1, SHA-384, and SHA-512 checksums of any file — and verify a download against its published hash. The file is read locally and never uploaded.

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Verify a Download's Checksum Get the SHA-256 of a File Check File Integrity Confirm Two Files Are Identical Publish a Checksum with Your File

Miten se toimii

A checksum is a fingerprint of a file. Publishers list one next to a download so you can confirm the file you got is exactly the one they released — not corrupted or tampered with. This computes them in your browser.

1
You pick a file
It's read into memory locally — never uploaded, no matter the size.
2
Web Crypto hashes it
The browser's native crypto.subtle computes SHA-256, SHA-1, SHA-384, and SHA-512 in a single pass over the bytes.
3
You compare to the published hash
Paste the checksum from the download page; it's matched against all four algorithms and a clear ✓/✗ tells you if the file is authentic.
4
Copy any hash
Grab a checksum to publish alongside your own files.

Verifying a sensitive download (an installer, a disk image, a backup) shouldn't require uploading it anywhere. The hash is computed entirely on your device with native browser crypto.