🔐 Strong Password Generator
Generate cryptographically secure random passwords — runs entirely in your browser, nothing is sent to any server
Click Generate ↓
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Character Pool Size—
Password Entropy—
Time to Crack (fast GPU)—
Generate 5 at Once
Frequently Asked Questions
At least 12–16 characters, mixing uppercase, lowercase, numbers and symbols. Avoid real words, names, or patterns. Use a unique password per account, and a password manager to remember them all. Enable 2FA on important accounts.
Yes — this runs entirely in your browser using the Web Crypto API (
window.crypto.getRandomValues). No data is sent anywhere. You can disconnect from the internet and it still works, confirming it's 100% client-side.Entropy measures unpredictability in bits. A 16-character password using all 95 printable ASCII characters has entropy of 16 × log₂(95) ≈ 105 bits. Higher is better. At 80+ bits, even a trillion-guesses-per-second attack takes more years than the age of the universe.
Absolutely. Bitwarden (free, open-source), 1Password, and LastPass are popular options. A password manager lets you use unique, strong passwords for every site without memorising them. Enable 2FA on your password manager itself for extra protection.