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MD5 and SHA-256 hash generator

Make a fingerprint of some text or a file, to check it was not changed. A hash is not a password and cannot be reversed.

Or drop a fileThe file stays on this device.

    Private by design: this tool runs in your browser. Nothing you add is uploaded.

    How to use it

    1. Paste text or drop a file.
    2. Choose MD5, SHA-1 or a SHA-2 hash.
    3. Press "Make hash" and copy it.
    Screenshot of the Hash generator tool on Sureno, in use
    Hash generator in use: a real screenshot of this page.

    Questions and answers

    Which hash should I use?

    SHA-256 for anything that matters. MD5 and SHA-1 are still used to check downloads, but they are no longer safe against a determined attacker.

    Can a hash be decoded?

    No. It is a fingerprint, not encryption. The same text always gives the same hash; you cannot get the text back from it.

    Is my text uploaded?

    No. The hashes are worked out in your browser.

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