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Password Strength Checker
Entropy-based analysis — nothing is stored or transmitted
Your password is never sent to any server — all analysis runs in your browser.
Tips for a strong password
- Use at least 16 characters for maximum security
- Mix uppercase, lowercase, numbers and symbols
- Avoid dictionary words, names, or dates
- Use a unique password for every account
- Consider a passphrase: 4+ random words joined together
- Use a password manager to store passwords safely