Password Strength Tester
Score passwords and see how to improve them.
100% Client-Side · In-Memory Only
Interactive Tool Workspace
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How to Use Password Strength Tester
- Type a password into the test field.
- Review the real-time visual strength meter and score (Weak, Fair, Good, Excellent).
- Inspect the checklist for character variety, common dictionary word flags, and estimated entropy bits.
Features & Guarantees
- Comprehensive entropy and pattern evaluation testing length, character sets, repetition, and sequences.
- Checks against top common breach passwords.
- 100% confidential — your test password is never transmitted across the network.
Frequently Asked Questions
Is it safe to test real passwords here?
Yes. The evaluation script is entirely local JavaScript running in your browser tab. No network packets are sent when you type.