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Password Strength Checker
Entropy-based scoring. Your password never leaves this page.
How scoring works
Entropy = length × log₂(charset size). Higher = stronger.
Charset grows as you add lowercase (26), uppercase (26), numbers (10), and symbols (32).
Penalties applied for common passwords, repeated characters, and sequential patterns.
🔒 Your password is never sent anywhere. Analysis runs entirely in your browser.
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