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How to use Password Strength Tester

Type a password and the tester scores it live, estimating entropy and brute-force crack time without ever sending the password anywhere.

Frequently asked questions

How is strength measured?

From length, character variety and entropy in bits, then converted into an estimated brute-force cracking time.

Is it safe to type my real password?

Yes — the analysis runs entirely in your browser and nothing is transmitted or stored.

What makes a strong password?

Length above all — a long passphrase beats a short password with symbols. Aim for 16 or more characters.

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