Use this simple mouse tester to make sure all of your mouse buttons are working properly. When you click a button on your mouse while this page is focused, the matching part of the graphic will light up.

You can also confirm that your scroll wheel is working. While you scroll, an arrow will show the direction (up or down). When you stop, the arrow stays highlighted to indicate that scroll direction has been tested.

Holding a mouse button down shows a darker color. After you release, it keeps a lighter "tested" color so you can see what you've already checked.

How to use this tester

1. Click each mouse button one by one (left, right, middle, side buttons). They should light up while pressed, then fade to a lighter shade when released.
2. Scroll up and down using your wheel. Arrows above and below the wheel will light up in the direction you scroll.
3. Use the Reset button under the graphic to clear all highlights and start again.