Password Strength Checker
Check password strength online — zxcvbn-based scoring with crack-time estimates for online and offline attacks, plus improvement tips. Fully local.
About Password Strength Checker
Type a password to see a 0–4 strength score, estimated crack times against throttled online attacks and offline brute force, and concrete suggestions to improve it.
The analysis uses Dropbox's zxcvbn engine (dictionary, pattern and keyboard-walk detection) and runs entirely in your browser — the password is never transmitted.