Hash Generator

SHA-1 / SHA-256 / SHA-512 of any text, computed locally with crypto.subtle. Hex and base64 output, no upload.

Text to hash

Notes

Empty input hashes the empty string, which is a valid answer, not an error.
SHA-1 and SHA-256 are shown for compatibility checks; use SHA-256 or SHA-512 for anything new.
Hashing is not encryption: you cannot reverse it, and a short or common input can be guessed by brute force.

What this hash generator does

Type or paste text and get SHA-1, SHA-256 and SHA-512 digests at once, as lowercase hex or as base64. The comparison against published test vectors is how you can check the implementation is correct.

Hashing uses the WebCrypto API of your browser, so it is the same algorithm the platform would use server-side. That makes it handy for verifying checksums, generating cache keys or reproducing a signature input.

Text is encoded as UTF-8 before hashing, so non-ASCII input produces the same digest as an equivalent server-side call. Nothing leaves the tab: there is no upload, no logging and no account.

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