Mouse Tester
Test mouse buttons, double-click chatter, scroll wheel and movement rate. Your work stays on this device whenever possible.
How to use Mouse Tester
- Move the pointer into the test box.
- Click each button, including the side Back and Forward buttons if your mouse has them.
- Double-click and scroll up and down to check the wheel.
- Watch "Last double-click gap" and the status line for signs of button chatter.
- Move the mouse in circles to see the movement rate in events per second.
Worked example
Click the left button ten times at a steady pace. The Left counter should read 10 and the double-click counter should stay at 0. If it jumps to 11 or 12 and the status warns about clicks a few milliseconds apart, the left switch is starting to fail.
When to use this tool
- Diagnosing unwanted double-clicks before a warranty claim.
- Checking that side buttons and the scroll wheel work on a new mouse.
Important limitations
The movement rate is a rough indication; browsers and displays cap how many pointer events a page receives, so it does not equal the mouse's USB polling rate.
Frequently asked questions
What is double-click chatter?
A worn switch can bounce and register two clicks for one press. The tester flags two left clicks less than 80 ms apart, which is faster than people normally click on purpose.
What does the movement rate tell me?
It counts pointer-move events per second, including coalesced events. It gives a rough idea of polling rate, but browsers and screens cap what a web page sees, so a 1000 Hz gaming mouse may show a lower figure here.
Why doesn't my side button register?
Some mice send side buttons as keyboard shortcuts through their own software. If the vendor app remaps them, the browser never sees buttons 3 and 4; switch the button back to its default in that app.
The wheel scrolls the wrong way. Is my mouse broken?
Probably not. Natural scrolling or reversed wheel settings in the operating system change the direction. The tester shows the direction the browser receives, which already includes those settings.
Does it work on a laptop touchpad?
Yes for clicks, two-finger scrolling and movement. Middle-click and side buttons depend on the touchpad driver and are often not available.