Password Generator

Characters are chosen using the browser’s crypto.getRandomValues API. Sampling discards the uneven tail of the random byte range so alphabet positions are not favored by a simple modulo operation. A whole candidate is retried if a selected character type is missing.

There is no Math.random fallback. If the cryptographic random source is missing or fails, the tool reports an error rather than returning a password. No generator can protect a password from malware, a compromised browser or someone who sees or receives it.

At the same character settings, a longer random password has more possible combinations. The default is 20 characters; the 8–128 range supports different destination limits. The shortest options are compatibility choices, not a security recommendation.

Uppercase and lowercase use English letters, numbers use 0–9, and symbols use printable ASCII punctuation. Spaces and accented letters are excluded. Some sites reject certain symbols or limit password length: follow the site’s actual requirements. Numbers-only output has fewer possible combinations at the same length.

This tool does not estimate crack times or guarantee a strength rating. Use unique passwords, a password manager, and multi-factor authentication or passkeys where available. Do not paste an existing password here; this is a generator, not a password checker.

Copy uses your browser’s clipboard feature when allowed. If the browser blocks it, choose Show, select the result and copy manually. Avoid copying passwords on shared devices or into untrusted applications.

Clear removes the current result from the interface. It does not erase clipboard history, copies in another application, or guarantee removal from browser memory. Changing settings also clears the previous result, so you must generate again before copying.