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CPS Tests

Mouse & hardware

Mouse Test

Press every button and spin the wheel inside the box to check that each one works.

Click, scroll and press the side buttons in this box

0 Left
0 Middle
0 Right
0 Back
0 Forward
0 Double left
0 Double right
0 Wheel up
0 Wheel down

Event log

Time since the previous event

    Your clicks and scrolls will show up here.

    How to use the mouse tester

    • Press the left, right, middle and both side buttons inside the box.
    • Roll the wheel up and down. Each step is counted in its own direction.
    • When every item on the Button check card has a tick, all inputs reached the browser.

    Chatter: unwanted double clicks

    Two presses of the same button less than 80 ms apart are flagged as chatter. Few people click that fast on purpose, so a flag during calm clicking usually points to a worn switch. For a longer check, use the double click test.

    When a button does not show up

    DPI and profile buttons are usually handled inside the mouse, and mouse software can remap side buttons to shortcuts, so the browser never sees them. Try resetting the software, another USB port or another computer.

    Frequently asked questions

    How do I know my mouse works properly?

    If every button and both wheel directions get a tick and no chatter is flagged, your mouse is working.

    Will the side buttons take me back a page?

    Not inside the test box. Back and forward navigation is blocked there so you can test them freely.

    Why are the wheel counts so high on a touchpad?

    Touchpads send many small scroll events instead of one per step, so they count far more than a notched wheel.

    Is anything sent to a server?

    No. The test runs entirely in your browser.

    Try another test

    Polling Rate Test Measure your mouse report rate in Hz. CPS Test How many clicks per second can you do? Right Click Test Measure the speed of your right mouse button. Spacebar Counter Mash the spacebar as fast as you can. Reaction Time Test Wait for green, then click. How fast are you? Aim Trainer Flick to targets and train your accuracy.

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