Scroll Wheel Test Online
Test your scroll wheel online to detect jumps, skips, and inconsistent scrolling behavior.
Interactive Mouse Tester
Click, scroll, and test all mouse buttons in the area below
Click Statistics
Track your button clicks and double-clicks
Event Log
Recent mouse events (last 20)
Click or scroll to see events
How to Test
- •Click anywhere in the test area to test buttons
- •Use scroll wheel to test scrolling
- •Side buttons work in the test area
- •Watch for unintended double-clicks (shown in red)
How to run a scroll wheel test
- Scroll slowly upward and confirm each scroll event appears.
- Scroll quickly downward to check for jumps or skips.
- Repeat with different surfaces to detect sensor + wheel issues.
If scrolling skips lines, clean the wheel and update mouse drivers.
Scroll Wheel Test FAQ
How do I test my scroll wheel?
Use the tester and scroll up/down to verify smooth, consistent scrolling without jumps or skips.
Why is my scroll wheel jumping?
Jumping can be caused by dust, worn encoders, or driver issues. A scroll wheel test helps confirm the problem.
Why does my scroll wheel move in the wrong direction?
Reversed scroll direction can be a system setting or a sign of encoder issues. Check OS settings first.
How fast should I scroll during testing?
Test both slow and fast scrolling to reveal skips that only show up at higher speed.