Strong Password Generator Online — Free
Need a strong password? Toolzoid's password generator uses the Web Crypto API (window.crypto.getRandomValues) to generate truly random, cryptographically secure passwords. Customize length up to 128 characters, include symbols, numbers, and uppercase letters. Live entropy score tells you exactly how strong your password is.
Generate a Cryptographically Strong Password
Free · No sign-up
Generate strong passwords online free — cryptographically secure, custom length up to 128 characters, symbols, numbers, live strength meter. No passwords stored or transmitted.
Open Password Generator →Free · Instant · No account required · Works in your browser
Frequently Asked Questions
What makes a password strong?
A strong password is long (16+ characters), random, uses uppercase and lowercase letters, numbers, and symbols, and is not based on dictionary words. Our generator creates passwords that meet all criteria.
How long should a strong password be?
Security experts recommend at least 16 characters for regular accounts and 20+ for email, banking, or password managers. Each extra character exponentially increases the time to crack.
Are generated passwords stored anywhere?
Never. All generation happens in your browser using JavaScript. No server receives your passwords. We cannot see what you generate.
Is this better than making up my own password?
Yes. Humans are terrible at generating true randomness — we use patterns. The Web Crypto API generates statistically unpredictable passwords that are mathematically stronger.