What the mouse test checks
Every button on your mouse sends a signal, and this test shows those signals as they arrive. Left, right and middle each have their own panel that highlights the instant you press it and keeps a running count, so you can see at a glance whether a button registers every time or occasionally skips. Scrolling and double clicking are tracked too, giving you a complete picture of your mouse's inputs in one place.
Because everything updates live, patterns jump out quickly. A button that lights up twice from one deliberate press, a wheel that does not move the scroll indicator, or a click that sometimes fails to register are all easy to spot here. That makes the mouse test a sensible first stop before you blame a game, an app or your own aim for a problem that is really the hardware.
Spotting a failing mouse
The most common fault is a switch that double clicks on its own, where one press registers as two. On this test it shows up as the double-click counter rising when you only meant to single click, or a button's count jumping by two from one press. Once a switch starts doing that, it usually gets worse over time, and no amount of careful clicking fully fixes it.
Other clues are just as visible: a middle button that will not register no matter how firmly you press, a right click that misfires, or a scroll wheel that jumps around. If a button here consistently fails to respond, the problem is almost always the mouse rather than your computer, especially if the same button misbehaves across different apps.
Beyond the buttons
A mouse test tells you whether the buttons work, but not how fast or how smoothly the mouse performs. For speed, the CPS test and click speed test measure how quickly you can click, while the double click test focuses specifically on clean double clicks and the chatter that breaks them. Together they cover both halves of mouse health: does it work, and how well.
If the buttons are fine but tracking or aiming feels off, the polling rate test measures how often your mouse reports its position, which affects how smooth and responsive it feels. Checking buttons here first rules out the simplest faults before you dig into the finer details of performance.
Frequently asked questions
How do I know if my mouse is broken?
Click each button on this test and watch the counts. A button that fails to register, or one that adds two clicks from a single press, points to a worn switch. If the fault repeats across apps, the mouse itself is the problem.
Does the mouse test work for any mouse?
Yes. It reads standard browser mouse events, so it works with any wired or wireless mouse, trackpad or trackball that your computer already recognises. Extra buttons beyond the main three may not be reported by the browser.
Why does my right click open a menu elsewhere but not here?
The test suppresses the browser context menu inside the box so your right clicks register as a test instead of opening a menu. Outside the box, right click behaves normally.