About This Tool
Generate strong, cryptographically secure passwords directly in your browser. No data is sent to any server — all generation happens locally using your device's built-in crypto API. Choose from random character passwords, memorable passphrases, or grouped PIN-style codes.
How to Use
Choose your password type: Standard (random characters), Passphrase (memorable words), or Grouped (PIN-style segments).
Adjust the length and character options — uppercase, lowercase, numbers, symbols — to match your site's requirements.
Click Generate to create a new password. The strength meter shows entropy and estimated crack time.
Click the copy button to copy to clipboard, or save to your local vault for reference.
Frequently Asked Questions
Are the passwords stored anywhere?
No. Passwords are generated entirely in your browser using the Web Crypto API. Nothing is sent to or stored on any server.
What makes a password strong?
Password strength depends on entropy — the number of possible combinations. Longer passwords with mixed character types have higher entropy and are exponentially harder to crack.
What is a passphrase?
A passphrase is a password made of random dictionary words (e.g., 'correct-horse-battery-staple'). Passphrases are easier to remember while still being very secure due to their length.
How is password strength calculated?
Strength is measured in bits of entropy. Each character adds entropy based on the size of the character pool. The tool also estimates crack time against different attack speeds.