Check password strength: entropy, crack time, patterns, and breach check.
Analyze the strength of any password instantly. See entropy bits, estimated crack time for online and offline attacks, character set analysis, and pattern warnings (sequences, repetition, keyboard walks, common words). Optionally check if your password has appeared in known data breaches using the Have I Been Pwned API (k-anonymity — your full password is never sent). All analysis runs locally in your browser.
Analyzed locally — never leaves your browser.