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The most recent data you entered in this tool, stored only in this browser.
Save what you type here, in this browser? Your work would go into this browser's local storage, so a refresh or a trip to another tool does not wipe it. You also get a short list of previous entries under the form, each one restorable with a click. Nothing is ever uploaded, and there is no account.
Being straight about the trade-off: anything kept there can be read by anyone who can use this browser profile, and by any script that later runs on this site. A tool page can hold a private key, a password or a signed token. Saving is convenient; it is not private.
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About this tool
Compute MD5, SHA-1, SHA-256 and SHA-512 digests of any text. SHA-256 and SHA-512 use the browser’s WebCrypto implementation; MD5 and SHA-1 are here because they still turn up in checksums and older protocols, not because they are safe for anything that matters.Questions
- Can I use MD5 for passwords?
- No. MD5 and SHA-1 are broken for anything security-related — both have practical collision attacks, and neither is designed to be slow. Use bcrypt or Argon2 for passwords.
- Why is there no SHA-3?
- WebCrypto does not expose it. Adding it would mean shipping a JavaScript implementation, which would be slower than native code and easy to get subtly wrong.