Generators
Produce the thing you need: passwords, UUIDs, QR codes, placeholder text, config snippets.
What these tools have in common
Output rather than analysis. You arrive knowing what you need and leave with it.
The security-relevant ones — passwords, passphrases, UUIDs, keys — use the browser's cryptographic random source, never `Math.random()`, and the value is never transmitted. A generated secret that made a network request on its way to you is not a secret, and that distinction is the whole reason to care which generator you use.