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Password Strength Checker

Check your password strength. Entropy, crack time and suggestions.

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100% in-browser — your password is NOT sent to any server: All analysis runs in JavaScript on your device. Open DevTools → Network; you will see no POST/fetch calls on this page.
Still avoid pasting real production passwords — habit matters.
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Generate Password

Frequently asked questions

Entropy, crack time, pattern detection, character distribution. No data sent to server. Runs in your browser with no installation required.