About gametest.world
gametest.world is a free collection of gaming performance tools that run entirely in your browser. There is nothing to install, no account to create, and no test data is uploaded to a server.
What we offer
- Keyboard latency test — measures dispatch delay, paint delay and jitter for each keystroke.
- Mouse latency test — click-to-paint timing, a pointer sample-rate probe, and a click reaction-time run.
- Aim trainer — Grid Shot and Flick Training modes for fast, accurate mouse targeting.
- Reaction time test — a visual-cue reaction test for keyboard or mouse.
How the tools work
Every tool uses the browser's high-resolution timers (performance.now and event timestamps) to time the part of the input chain that JavaScript can observe: event queueing delay and the delay until the next painted frame. These numbers are a precise measure of one segment of latency, not true end-to-end hardware latency. Switch travel, USB polling, the OS input stack, compositing and monitor pixel response all sit outside what a browser can measure. The guide explains this in detail.
Privacy
All measurement runs locally on your device. Personal bests are stored in your browser's localStorage and never leave it. We do not collect personal information. See our privacy policy for details.
Contact
Questions or feedback? Visit the contact page.