Password Strength Checker
Check password quality locally with entropy estimate, pattern warnings and practical improvement tips.
Is this password checker safe?
The check runs locally in your browser. Still, avoid pasting real active passwords into any website unless necessary.
What makes a password strong?
Length is the biggest factor. A long passphrase with mixed characters is usually stronger than a short complex password.
Does this tool check leaked passwords?
No. It does not query breach databases because that would require network checks.