Secure Password Generator — Create Strong Random Passwords Instantly
Generate cryptographically strong, random passwords for any account — choose length, symbols, numbers, and character types. Create passphrases or bulk-generate multiple passwords at once. Everything runs in your browser. Your passwords are never sent to any server.
🔒 Generated in your browser using Web Crypto API. Zero data stored.
How to Generate a Strong Password
Why Password Security Matters
Weak or reused passwords are the number one cause of account takeovers. Once an attacker has your password from one data breach, they try it on every other service — a tactic called credential stuffing. A unique, random password for each account stops this cold.
Passwords shorter than 12 characters can be brute-forced in hours with modern hardware. A 16-character random password with mixed character types would take billions of years to crack with current technology. The math strongly favors length and randomness.
This generator uses the browser's Web Crypto API (crypto.getRandomValues()) — the same cryptographically secure random source used in security-sensitive applications, far superior to regular JavaScript Math.random().
Frequently Asked Questions
How secure is this password generator?
This generator uses the Web Crypto API (crypto.getRandomValues()), which provides cryptographically secure randomness. It's the gold standard for client-side random generation. Combined with a good length and character set, the passwords generated here are as strong as any security tool provides.
Are my passwords ever stored or sent to a server?
Never. The entire generation process runs in your browser's JavaScript engine. No network requests are made. No data is logged. You can even turn off your internet connection and this generator will continue working perfectly.
What is a passphrase and when should I use one?
A passphrase is several random words joined together (e.g., "coral-rabbit-forest-lamp"). It can be easier to remember than a string of random characters while still being extremely strong due to its length. Great for master passwords in password managers.
How do I remember all my strong passwords?
You don't — that's what password managers are for! Tools like Bitwarden (free, open-source), 1Password, or KeePass store all your passwords securely. You only remember one strong master password. This is the recommended approach for everyone.
What does the strength meter measure?
The strength meter estimates entropy based on character set size and password length. A password with more character variety and length has more possible combinations, making it exponentially harder to crack. Aim for "Strong" or "Very Strong" ratings for important accounts.