Mouse Tester
Check every mouse button, the scroll wheel, double-click and movement.
Click, right-click, scroll and double-click inside this box
double-click
How to use the Mouse Tester
- Move the pointer inside the box to see its coordinates.
- Click, right-click and scroll — each lights up.
- Double-click to confirm it registers as one action.
About the Mouse Tester
The mouse tester turns your pointer’s activity into something you can see. Click inside the box and the left, middle or right button lights up; spin the scroll wheel and it flashes the direction you scrolled; double-click and it confirms the double-click was detected; and as you move the pointer, it prints its live X and Y coordinates within the box.
That makes it a quick diagnostic for a mouse that is misbehaving — a button that no longer registers, a scroll wheel that skips, or the classic fault where a single click fires twice because the switch is worn. It is equally handy for checking a second-hand mouse before you rely on it for work or games.
A couple of honest notes: right-click’s context menu is deliberately suppressed inside the box so it does not interrupt the test, and the tool reports button, scroll and movement events as the browser sees them — it cannot diagnose hardware quirks like sensor jitter or lift-off distance. Everything runs locally in your browser. Pair it with the keyboard tester or the click speed test.
Frequently asked questions
My mouse double-clicks on a single click — can this show it?
Yes. Do one deliberate single click and watch the double-click indicator. If it flags a double-click when you only clicked once, the switch is likely double-firing, a common sign of a worn mouse button.
Why does right-click not open a menu here?
The context menu is intentionally suppressed inside the test box so it does not pop up over the test every time you press the right button. The right button itself still lights up so you can confirm it works.
What are the numbers that change as I move?
They are the pointer’s X and Y position in pixels, measured from the top-left corner of the test box. They confirm that movement is being tracked smoothly.
Can it detect sensor jitter or DPI problems?
No. It reports the button and movement events the browser receives, not the behaviour of the optical sensor. It confirms your clicks and scrolls register, not the tracking quality of the hardware.
Is anything recorded?
No. All of it happens in your browser. Nothing about your clicks or movement is uploaded or stored.