Measure password strength using zxcvbn — the same library Dropbox uses. Offline, never transmitted.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Type or paste a password into the input.
zxcvbn estimates crack time and identifies weaknesses.
Read the entropy score, top patterns, and improvement suggestions.
0 bytes uploaded. Password Entropy Auditor runs entirely in your browser. Files, passwords, and PGP private keys never leave your device. No analytics fire during processing — only after you opt-in to dashboard audit logging.
No. Analysis runs entirely client-side in your browser.
Score 4 means the password takes centuries to crack at modern speeds. Score 3 is acceptable; below that, strengthen it.