Mouse Test
Our online Mouse Test verifies every button, the scroll wheel, and cursor tracking in seconds. It catches the most common mouse faults — double-click errors, dead scroll wheels, unregistered side buttons, and sensor stutter — without installing anything. Whether you are testing a brand-new gaming mouse, troubleshooting an older office mouse, or verifying a warranty replacement, this test gives you a definitive answer before you spend more money.
How to use the Mouse Test
- Click every button — left, right, middle (wheel press), and both side buttons — at least twice.
- Scroll the wheel up and down several times to confirm both directions register.
- Move the cursor smoothly across the tracking pad; watch for jumps or freezes.
- Rapidly double-click the left button to check for the notorious double-click bug.
How to interpret your results
A healthy mouse registers every press instantly, scrolls smoothly in both directions, and tracks the cursor with no visible stutter. If a single click produces two events, the microswitch has worn out — the fix is either warranty replacement or swapping the switch. Scroll wheels that skip or scroll the wrong direction usually have a dirty or failing encoder.
Common issues and what they mean
Double-click on a single press
The left-click microswitch is worn. On many Logitech and Razer mice this is covered under a 2-year warranty. DIY fixes involve replacing the Omron switch (soldering required).
Scroll wheel jumps randomly
Dust in the encoder wheel is the usual culprit. Some users report success spraying a tiny amount of electronic contact cleaner into the wheel and spinning it rapidly.
Side buttons do nothing
Check that vendor software (Logitech Options, Razer Synapse) is installed and that the buttons have functions bound.
When to run this test
- Before the return window closes on a new mouse.
- When games or apps miss clicks.
- To confirm a warranty claim before submission.
Testing a laptop touchpad
Most laptops use a click-pad, where the whole surface is the button. Press near the bottom corners for left and right clicks, then try tap-to-click, which is a separate setting: if tapping does nothing but pressing clicks, tap-to-click is switched off rather than broken. On Windows it is under Settings, Bluetooth & devices, Touchpad; on macOS under System Settings, Trackpad.
Check two-finger scrolling in both directions and, where supported, three-finger gestures. A touchpad that ignores all input has usually been switched off: many laptops have a function key for it, and Windows can turn the touchpad off automatically while a mouse is connected.
A touchpad that has become hard to press, or now sits higher than the palm rest, can be pushed up by a swelling battery underneath. Stop using the laptop on battery and have it checked, because a swollen lithium-ion battery is a safety risk.
Why mice start double-clicking
A single press that registers as two clicks almost always comes from the microswitch under the button. As the metal contact inside wears or oxidises it can bounce, making and breaking contact more than once in a single press. Click the left button rapidly in the test and watch for clicks you did not make.
Before replacing anything, check the double-click speed in your operating system's mouse settings and try the mouse on another computer. If the extra clicks follow the mouse, the switch is worn: claim the warranty if it still applies, or replace the switch, which needs soldering on most mice.
Scroll wheels, tracking and wireless lag
A wheel that skips, or briefly scrolls the wrong way, usually has a dirty or worn encoder. Short bursts of compressed air around the wheel can help; persistent skipping on an inexpensive mouse usually means replacing it.
Cursor jumps and freezes are often caused by the surface rather than the sensor. Optical sensors struggle on glass and glossy desks, so try a plain mouse mat and wipe the sensor window on the underside. For a wireless mouse, move the receiver closer, keep it away from USB 3 ports and devices, which can interfere with the 2.4 GHz band, and replace weak batteries.
Frequently asked questions
Does the test measure DPI or polling rate?
It measures perceived tracking smoothness but not exact DPI. For accurate polling-rate tests, use a dedicated tool like MouseTester.
Why does my wireless mouse feel laggy?
Low battery, USB 3.0 interference on the 2.4 GHz band, or a distant receiver are the top three causes.