Strong & Secure Random Password Generator
Generate unbreakable passwords using your browser's secure random source. Customize length, characters, and exclusions. Nothing leaves your device.
How this generator works
What makes a password strong, and how we ensure security.
Cryptographically Secure
Uses your browser's
crypto.getRandomValues()
— the same source used for SSL keys. No predictable
Math.random().
100% Local
Generation happens entirely in your browser. Passwords are never transmitted, logged, or stored on any server.
Entropy Matters
We measure password strength in bits of entropy. 80+ bits is recommended for important accounts; 128+ bits is excellent.
Length Beats Complexity
A 20-character password is exponentially stronger than a complex 8-character one. Aim for at least 16 characters.
Use a Manager
Generated passwords are most useful with a password manager. Don't try to memorize them — let your manager do that work.
Passphrases Too
For passwords you must remember, switch to passphrase mode. Four random words give roughly 50 bits of entropy.