About

100jacks is a collection of small, single-purpose tools that run entirely in your browser — a keyboard tester, a click-speed test, and more as they ship. Each one does exactly one thing, at its own address, with nothing around it to get in the way.

There's no sign-up to use any of them. Nothing you type, click, press or record is uploaded anywhere — see the privacy page for exactly what that does and doesn't mean. Signing in is entirely optional and only ever adds the ability to save results you choose to keep.

The whole catalogue, live and growing, is at /tools.