Password Strength Analyzer

Analyze password strength entirely in your browser: character-set size, Shannon entropy bits, estimated offline crack time at a configurable guess rate, and concrete weakness flags. Nothing leaves your device.

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Password Strength Analyzer

All analysis runs locally in your browser — nothing is sent anywhere. For auditing your own or authorized-test credentials only.

Password

Attacker guess rate

Strength—

Length

—

Char pool

—

Pool entropy

—

Shannon

—

Estimated offline crack time

—

Weakness flags

Enter a password to see flags.

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