About KeyTest Global

KeyTest Global was built to give gamers, programmers, writers, and IT professionals a fast, accurate, and completely private way to diagnose keyboard and mouse hardware directly in the browser.

The entire tool runs client-side: every keystroke, click, and scroll event is processed using native browser APIs (KeyboardEvent, MouseEvent, and the high-resolution Performance API) and never leaves your device.

We built this because most keyboard testers online are either bundled with intrusive ads, require downloads, or don't provide real rollover data — just a visual grid. KeyTest Global focuses on the numbers a browser can measure reliably: key hold time, chatter detection, concurrent key limits, and mouse polling rate.