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Password Strength Checker
Analyze your password strength, entropy, and security criteria.
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About Password Strength Checker
The password strength checker evaluates your password against common security criteria and estimates its entropy — a measure of unpredictability. Higher entropy means more time for a brute-force attack to crack the password.
A password with 128+ bits of entropy is considered cryptographically strong. For practical security, use a password manager to generate and store random 16+ character passwords with all character types enabled. Never reuse passwords across sites.