Password Strength Checker
Analyse a password entirely on your device for length, repetition, sequences and common patterns. The input is never transmitted, logged or stored. The score is an estimate, not a guarantee.
How this check works
The analysis runs in this browser tab using the zxcvbn algorithm (Dropbox, MIT licensed). Your password is matched locally against bundled lists of common passwords, common English words, first and last names, keyboard layouts and previous breach wordlists.
Your password is never sent to a server, written to storage, or included in logs. Close this tab and it is gone.