My PC Tester

Mouse Test

Every button, the wheel, polling rate, double-click faults and movement smoothness. For professional mouse configuration and debugging, click here i

🎯 Mouse tested? Practice aiming now
Move the cursor into the test area to begin
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Progress

Progress 0 / 6
Left button Awaiting test
Middle button Awaiting test
Right button Awaiting test
Wheel Awaiting test
Side button 4 (back) Awaiting test
Side button 5 (forward) Awaiting test

Some buttons may be mapped to browser/system actions (side = back/forward, middle = auto-scroll, right = context menu). This page suppresses those during testing — the mouse only registers each press. Learn why

If a browser or driver still triggers an action, remap that button away from its default (e.g. in your driver) and test again — that is a system setting, not a fault.

Mouse tests

Mouse Test : Press every button — left, right, middle, side and wheel — to check each one works. Polling Rate Test : Track event frequency in real time to estimate your polling rate and judge performance. Double-click Test : Record the interval between clicks to catch aged switches turning one click into two. CPS Test : Click as fast as you can inside a countdown to measure your clicks per second. Smoothness Test : Hold the left button and draw to check cursor smoothness and dropped frames. Size Comparison : Calibrate with a bank card and render any mouse at real size — put your hand on the screen to compare.

Why choose My PC Tester?

Realistic on-screen mouse

A lifelike mock of a real mouse — every button including the wheel and side buttons lights up the instant it is pressed, so the test is intuitive and spots a faulty button at a glance.

Five-in-one testing

Combines a button check, polling-rate measurement, double-click diagnosis, a CPS speed challenge and movement-smoothness analysis — full mouse coverage in a single tool.

Install-free, data private

Runs on your browser’s native Web APIs — nothing to install. All test data is processed locally on your device and never sent to any server.

Cross-platform

Works on Windows, macOS and Linux across Chrome, Edge, Firefox and Safari. Wired, wireless or Bluetooth mice all test fine.

How to start testing

  1. 01 · Button test

    Move the cursor into the test area, then press the left, right, middle and side buttons one by one and watch whether the matching button lights up.

  2. 02 · Wheel check

    Scroll the wheel up and down inside the test area and confirm the feedback is smooth and the direction matches your input.

  3. 03 · Review results

    Check the results panel to confirm every button and the wheel have lit up — that means everything works.

Test principle: why some buttons never respond

A mouse click travels from your hand to the browser through two gates — whatever stops it may be the system, the browser or a driver, not necessarily a broken mouse.

Gate A — the system / driver layer: side buttons mapped to back/forward, the middle button triggering auto-scroll, or driver / software remapping. This decides whether the browser can receive the action — and a remapped button may trigger something else entirely. An action stopped here is completely silent in the page (not even one mousedown) — that is not a bug, the action never reached the browser.

Gate B — the browser layer: e.g. back/forward navigation, the right-click context menu, middle-button auto-scroll. This decides whether the browser also runs its own default action on top. This page suppresses those defaults across the whole page while you test, so the mouse only registers each press — nothing else is triggered. On fullscreen in Chromium browsers (Chrome / Edge) a few more can be blocked, but a browser or OS-level mapping can still slip through.

Only when every gate lets a press through does it reach the page and register. So if one button does not respond, there is no need to worry — it may be mapped to a system function like back/forward; remap it with your driver or adjust the system setting and test again. It is not necessarily a hardware fault.

Layer Example actions Browser, not fullscreen Browser, fullscreen
Browser-level default actions Side = back/forward, right-click menu, middle auto-scroll Can block Can block
Browser-level (stubborn) Some browsers / systems still use their own handling Not always Mostly blockable
Operating-system level Driver remap, side = back/forward, global hotkeys Cannot block Cannot block

Frequently asked questions

Do the side buttons trigger back / forward navigation during testing?

This page suppresses the browser’s default back / forward, middle-button auto-scroll and other system mouse actions across the whole page — the mouse only registers a button press and never navigates away. If a particular browser or driver still interferes, remap the side buttons away from back / forward (e.g. with your driver) and test again.

Why does my wheel get no response?

Make sure you scroll inside the test area. If the page still ignores it, the wheel encoder may be faulty or the browser incompatible (Chrome or Edge recommended).

Is this mouse tester paid?

Completely free, nothing to install — open a browser any time and check the health of your mouse.

Can I use it on a phone or tablet?

If a mouse is connected via OTG or Bluetooth you can navigate to this page and test. Mobile input works differently, though, so some side buttons may not be recognized due to system limits.

Side buttons fine here but dead in games — why?

The hardware is fine. In-game failures usually come from wrong bindings in the game or missing official drivers — check your in-game button map.