Text hashes
SHA-1
—SHA-256
—SHA-384
—SHA-512
—Random UUIDs (v4)
Notes
Hashes are computed from the UTF-8 bytes of your text using the browser's Web Crypto API, so results match tools like sha256sum. MD5 is not offered — browsers do not implement it because it is broken; prefer SHA-256. A hash is one-way: it cannot be "decrypted" back into the text.
UUIDs are version 4 — 122 random bits from a cryptographically secure generator. The chance of two ever colliding is negligible.
Everything is computed on this page. The text you hash is deliberately not saved anywhere — not even in this browser.