Strong Password Generator
A browser-based password generator that uses the Web Crypto API (crypto.getRandomValues) to create truly random, cryptographically secure passwords. Customize length, character sets, and see instant strength feedback — all without sending any data to a server.
Why Use This Password Generator?
- Cryptographically secure — uses your browser’s built-in crypto engine, not
Math.random(). - Fully customizable — control length (4–64), uppercase, lowercase, digits, and symbols independently.
- Visual strength meter — instant Weak / Medium / Strong feedback as you adjust settings.
- One-click copy — copy the generated password to your clipboard instantly.
Key Features
- Web Crypto API: Generates passwords using
crypto.getRandomValues()for maximum entropy. - Character Guarantees: At least one character from each enabled set is always included.
- Shuffle Algorithm: Fisher-Yates shuffle ensures no positional bias.
- Strength Scoring: Based on length, character diversity, and set coverage.
How it Works
The generator builds a character pool from your selected sets, then fills an array with cryptographically random indices via the Web Crypto API. Required characters from each set are injected and the array is Fisher-Yates shuffled to eliminate positional predictability. The strength meter scores 6 criteria: length thresholds (8, 12, 20), mixed case, digits, and symbols.
Try the Password Generator
Click “Generate Password” to create a new secure password. Adjust the sliders and toggles to match your requirements, then copy with one click.