Secure Password Generator — Create Strong, Random Passwords Instantly

Our free secure password generator creates truly random, cryptographically strong passwords using your browser's built-in Web Crypto API — the same technology used by security professionals and password managers. Every password is generated entirely in your browser. Nothing is sent to any server, logged, or stored. Your passwords are 100% private.

What Makes a Password Secure?

Password security is determined by two factors: length and character set size. Together these determine entropy — the number of possible combinations an attacker must try. A 16-character password using uppercase, lowercase, numbers and symbols has approximately 2¹⁰⁴ possible combinations — which would take millions of years to crack even with specialised hardware running one trillion guesses per second.

• 8 characters — Minimum acceptable. Can be cracked in hours with modern hardware.
• 12 characters — Good for most general accounts.
• 16 characters — Recommended for all important accounts.
• 20+ characters — Recommended for server root passwords, database credentials and API keys.
• 32+ characters — Recommended for encryption keys and service accounts.

Password Security Best Practices for IT Professionals

• Use a password manager (Bitwarden, 1Password, KeePass) — never reuse passwords
• Enable multi-factor authentication (MFA) on all critical systems
• Use passphrases for passwords you must remember — four random words are stronger than a complex 8-character password
• Never use dictionary words, names, dates or keyboard patterns
• Rotate service account passwords every 90 days or immediately after staff changes
• Use different passwords for every service — credential stuffing attacks are the most common cause of breaches

Why Use a Browser-Based Password Generator?

Unlike online password generators that generate passwords server-side, our tool uses crypto.getRandomValues() — a CSPRNG (Cryptographically Secure Pseudorandom Number Generator) built into every modern browser. This means the randomness is generated on your device, never transmitted, and cannot be intercepted or logged by any third party.