Password Generator

A password generator creates strong, unpredictable passwords so you do not have to invent them yourself. Human-chosen passwords tend to follow predictable patterns — a name, a birthday, a common word with a number tacked on — which makes them easy for attackers to guess with automated tools. A generated password draws from a large pool of characters at random, producing something with no meaningful pattern and far more resistance to brute-force and dictionary attacks.

This generator uses the browser's Web Crypto API (crypto.getRandomValues) rather than the ordinary Math.random. That distinction matters: Math.random is not cryptographically secure and its output can, in principle, be predicted, whereas the Web Crypto API is designed specifically for security-sensitive randomness. Every password is generated locally in your browser and is never transmitted anywhere.

What makes a password strong

Two factors dominate: length and character variety. Each additional character multiplies the number of possible combinations, so a longer password is exponentially harder to crack. Mixing uppercase letters, lowercase letters, numbers, and symbols enlarges the character set, which increases the difficulty further. A 16-character password using all four character types is extremely resistant to brute-force attacks with current technology.

Customizing your password

You can set the length anywhere from 4 to 64 characters and toggle which character types to include. Some systems reject certain symbols, so you can disable symbols when a site is picky, or generate a longer letters-and-numbers password to compensate. For the strongest result, keep all character types enabled and choose the longest length the target system allows.

Best practices

Use a unique password for every account so that a breach on one site cannot compromise the others, and store your passwords in a reputable password manager rather than reusing them or writing them down insecurely. Combine generated passwords with two-factor authentication wherever it is offered for an additional layer of protection.