KeyGenerator.io

What it does

Generates passwords, JWT signing secrets and AES keys with crypto.getRandomValues. CSS, JS and translations are inlined at build time, so once the page loads it makes no network requests at all. Open the Network tab and watch it stay empty. 7 languages.

Free online password and key generator. Strong random strings of 6 to 64 characters, made in your browser. Entropy and crack time shown.

Press Space for a new password, C to copy. Generated with crypto.getRandomValues on your own device. Every password comes from crypto.getRandomValues , the browser's cryptographically secure random source. It is not Math.random, which is fast but predictable and must never be used for secrets. Characters are drawn by rejection sampling: taking a raw random number modulo the alphabet size would quietly make the earliest characters more likely, so out-of-range draws are discarded and retried instead. One character from each category you enable is placed first, then the whole string is shuffled, so the guarantee never shows up as a predictable position. The strength readout is entropy in bits…from keygenerator.io

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