Password strength checker — tests your password against 10 security criteria without storing or transmitting it
Password strength checker
Tests your password against 10 threat types instantly — nothing is stored or sent anywhere.
Enter a password to begin
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Length
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Score / 100
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Entropy bits
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Checks passed
Entropy
0 bits
Estimated crack time (offline brute-force)
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Enter a password to see estimate
Your password never leaves your browser. All analysis runs locally in JavaScript.
Privacy: Everything runs in your browser — the password is never sent anywhere or stored.