File ChecksumNothing uploadedNo sign-upNo watermark

Verify Any File With Its Hash

Generate a SHA checksum and compare it against the one a project published — without sending the file anywhere.

1Drop in the file
2Pick the algorithm
3Compare with the published sum

Drag & drop your file

or click to browse

Any file type — nothing is uploaded

Processed locally — your files never leave this device

Checksums Without Uploading The File

A checksum proves a download was not altered in transit. Sending that file to a third-party server to check it undoes the point, so ModiFyX hashes it in your browser.

The File Stays PutHashed by your own browser. Uploading a file to check it rather defeats the point.

Verify A DownloadPaste the checksum a project publishes and get a straight yes or no.

SHA-256, 384, 512, SHA-1Every digest the Web Crypto API offers, including SHA-1 for older published sums.

Any File TypeISOs, installers, archives, documents — it hashes bytes and does not care what they are.

Spot A Tampered FileA single changed byte produces a completely different digest.

Works OfflineWeb Crypto is built into the browser, so no connection is needed.

💎 Support Developer — Keep Tools Free

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