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, and what you type, click, press or record is handled by the tool in your browser rather than uploaded — 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 site is built and maintained by an independent developer based in Ontario, Canada — one person, working on it alongside other things, rather than a company or a team. It's free to use and supported by advertising, which is what pays for the domain and the hosting and keeps every tool open to everyone without a paywall or a sign-up.

The whole catalogue, live and growing, is at /tools. If you've found a bug, want a tool that doesn't exist yet, or need to reach a human, get in touch.