Free in-browser tester for your keyboard, mouse & gamepad. Spot dead keys, check buttons, scroll & analog sticks. Private, offline-capable, no install.

Free browser-based PC hardware testing tools — keyboard tester, reaction time test, CPS test, dead pixel test, and 28+ more. No download required.

This is mainly a free tool designed to help people identify potential problems with their mouse. It is very simple to use and it only takes about 2 minutes to test mouse completely.