PassHash

Real bcrypt and Argon2id — the reference C implementations, compiled to WebAssembly.

Hashing runs in a WebAssembly module loaded from this site — the password never leaves your browser

For development and testing only. This is real bcrypt/Argon2 — not a toy — but a browser tab is not where you should generate the password hashes for a production system. Use it to understand cost factors, verify hashes your backend produced, or build local dev fixtures.

Password

Cost factor

Iterations Memory (MB)

Existing hash to verify against