Mouse Test Tools — Buttons, Wheel, Double Click, CPS and DPI
A mouse fails in a handful of recognisable ways: a side button stops responding, the wheel skips in one direction, the main switch starts sending two clicks from one press, or the sensor and DPI drift away from what you configured. Each test here isolates one of those, and none of them need a driver or an installer — the browser reads the same input events your operating system does. Start with the mouse test for a full function check, then use the double-click and wheel pages when one specific symptom appears.
Mouse Test
Check every button, the wheel and the side buttons in your browser.
Double Click Test
Detect a chattering switch that fires two clicks from one press.
Scroll Wheel Test
Check both scroll directions and the middle click.
Click Speed Test (CPS)
Measure your clicks per second over 1–60 seconds.
Polling Rate Test
See how many position updates per second your browser receives.
Mouse DPI Test
Estimate your mouse DPI by dragging a measured distance.
Guides
How to Test Your Mouse
A five-minute routine that checks every button, the wheel and the sensor.
Why Is My Mouse Double-Clicking?
Chatter explained: why it happens and what actually fixes it.
How to Test Every Key on Your Keyboard
A systematic pass that finds dead, sticky and chattering keys.
How to Fix a Microphone That Is Not Working
A diagnosis order that finds the cause in a few minutes.
How to Check a Screen for Dead Pixels
A proper test procedure, plus how to document a defect.
How to Find Your Mouse DPI
Find or measure the DPI your mouse is actually running at.
What Is eDPI and cm/360?
The two numbers that actually describe a mouse setup.