Password Generator

What is Password Generator?

A random password generator uses the browser's cryptographically secure random source to build a password of the length and character set you specify, can exclude visually ambiguous characters, and rates its strength instantly. The password exists only in this page's memory, and is never logged or uploaded.

How to use Password Generator

1. 1Drag the slider to set the length; 16 characters is a sensible minimum.
2. 2Tick the character classes you need: uppercase, lowercase, digits, symbols.
3. 3If the password has to be written down by hand, enable "exclude ambiguous characters" to drop O/0, l/1, and the like.
4. 4Copy the password and save it into your password manager immediately.

How do I do this in code?

Use the tool above for one-off work; for anything you repeat, move it into a script or your project.

const pick = (alphabet, length) => {
  const bytes = new Uint32Array(length);
  crypto.getRandomValues(bytes);
  return [...bytes].map((n) => alphabet[n % alphabet.length]).join('');
};

Frequently asked questions