Mouse Tester

Welcome to the Mouse Tester, a free diagnostic utility built to verify the hardware health of your computer mouse. By capturing exact event codes directly from your operating system, this tool can confirm whether your left, right, middle, scroll, and auxiliary side buttons are properly registering signals.

Unlike other tools that focus on speed or double-click issues, this tester is a pure functionality check. It features a responsive visual diagram that illuminates when a button is depressed. If a button on your physical mouse feels 'mushy' or unresponsive, this tool will definitively tell you if the electronic switch inside has failed or if it's just a tactile issue.

We also log every input in a real-time event feed. This helps you track the exact sequence of your clicks and verify if the browser is receiving the `mousedown`, `mouseup`, or `wheel` events correctly.