Password Generator

A secure password generator creates random, unpredictable passwords using cryptographically secure random number generation. Unlike passwords humans create (which tend to follow predictable patterns like "Password123!"), generated passwords have maximum entropy — making them effectively impossible to guess or crack through brute force.

Password security depends on two factors: length and character variety. A 16-character password using uppercase, lowercase, numbers, and symbols has approximately 10^30 possible combinations. Even at billions of guesses per second, cracking such a password would take longer than the age of the universe. But a short, predictable password like "qwerty" can be cracked in milliseconds.

Our password generator uses the Web Crypto API (crypto.getRandomValues()) — the same cryptographic random number generator used by banks and security software — to produce truly random passwords. Configure length (8-128 characters), choose which character types to include, generate multiple passwords at once, and see real-time strength ratings. Everything runs in your browser — generated passwords are never transmitted or stored anywhere.

1. Set the password length — Use the slider or type a number between 8 and 128 characters. 16+ characters is recommended for strong security.
2. Choose character types — Toggle uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and symbols (!@#$%^&*...) on or off. Using all four types maximizes password strength.
3. Generate — Click "Generate" for a single password, or "Generate 5" to create multiple options at once so you can pick the one you prefer.
4. Check the strength meter — Each password shows a strength rating (Weak, Medium, Strong, Very Strong) based on length and character variety.
5. Copy to clipboard — Click the copy icon next to any password to copy it, then paste it into your password manager or registration form.

• Cryptographically secure — Uses the Web Crypto API (crypto.getRandomValues) for true random number generation, not Math.random().
• Configurable length — Generate passwords from 8 to 128 characters with a slider and numeric input for precise control.
• Character type toggles — Include or exclude uppercase letters, lowercase letters, numbers, and symbols to match any password policy requirements.
• Bulk generation — Generate 5 passwords at once to choose from multiple options, useful when creating credentials for multiple accounts.
• Real-time strength meter — Visual strength indicator rates each password as Weak, Medium, Strong, or Very Strong based on length and character diversity.
• 100% client-side — Passwords are generated entirely in your browser. Nothing is sent to any server, logged, or stored.

• Account registration — Generate a unique, strong password for each new account instead of reusing passwords across services.
• Password manager seeding — Create high-entropy passwords to store in your password manager (1Password, Bitwarden, KeePass) for all your accounts.
• API keys and secrets — Generate random strings for API tokens, webhook secrets, encryption keys, and other credentials that need to be unpredictable.
• Meeting password policies — Configure character types to match specific requirements (e.g., "must include at least one uppercase, one number, and one symbol").
• Development and testing — Generate test passwords for user registration flows, authentication testing, and password validation logic during development.