Utility Tools

About Utility Tools

This is the category for tools that don't belong to a category. A QR code for a poster. A password for an account you're setting up right now. A random number to settle something. A timer, because the one on your phone is in the other room.

The password tools deserve a note, because they are the ones where implementation quality genuinely matters. The generator draws from crypto.getRandomValues(), the browser's cryptographically secure random source, not Math.random() — which is fast, predictable, and completely unsuitable for anything you will actually rely on. Generated passwords are produced in your browser and never transmitted, so the string you copy has existed in exactly one place.

The strength checker estimates entropy from length and character variety, and it is worth understanding what that can and cannot tell you. Entropy measures resistance to brute force. It does not know that your fourteen-character password is a song lyric, or your child's name with a 1 on the end, or one of the hundred million strings already sitting in a breach corpus — all of which fall instantly to a dictionary attack regardless of what the meter says. A high score means the password is long and varied. Only randomness at generation time makes it genuinely strong.

Utility Tools — Frequently Asked Questions