Hash any text with SHA-256/384/512 or SHA-1, and generate random UUID v4 identifiers in bulk — all locally in your browser.
Hashes and UUIDs, generated locally
Paste text and compute a cryptographic hash with SHA-256, SHA-1, SHA-384 or SHA-512 using your browser's built-in Web Crypto, then copy the digest. Need unique identifiers? The UUID v4 generator creates as many random, RFC-4122 IDs as you want. Nothing is uploaded — it all runs on your device.
Which hash algorithms are supported?
SHA-1, SHA-256, SHA-384 and SHA-512, computed with the browser's native Web Crypto API. (MD5 isn't included because browsers don't provide it natively.)
Are the UUIDs version 4?
Yes — they're random RFC-4122 version-4 UUIDs, generated with a cryptographically secure random source.
Is my text sent to a server?
No. Hashing and UUID generation happen entirely in your browser.