Mouse checks in one place

Mouse Test

See which button presses, releases and wheel events reach your browser. Start here, then choose a focused test for the behavior you want to investigate.

Check your mouse buttons and wheel

Start the test, keep the pointer inside the outlined area, then press, hold and release each button your mouse has. Roll the wheel in both directions.

Ready — start to observe input.

ForwardNot observed

BackNot observed

LeftNot observed

MiddleNot observed

RightNot observed

Wheel / trackpad events

Observed events: 0

Last wheel delta direction

Up0

Down0

Left0

Right0

No wheel events yet

These are browser wheel deltas, not physical wheel notches or proof of the direction a page moved. A trackpad can produce the same events. Natural scrolling and system settings can change the reported direction.

Tab moves to the next control. Escape pauses. Leaving this area or switching windows pauses the test.

Buttons with down + up: 0/5
Button down events: 0
Last button event: None yet

Use a mouse or trackpad. Touch and pen input do not count as mouse buttons. Browser button names follow your device settings, so a left-handed mapping may swap left and right.

Back and Forward may be handled by your browser, operating system or mouse software before this page receives them. A side button may still navigate away. An unobserved button does not prove a hardware fault.

Ctrl, Meta and Alt wheel combinations are left to the browser and excluded. Ordinary wheel scrolling is contained only while this test area is active and focused.

Observation checklist

Check the controls your device actually has. An empty item means no matching event was observed in this session; it is not a failed hardware test.

Left / primary button
Not observed yet
Down: 0 · Up: 0
Middle / wheel button
Not observed yet
Down: 0 · Up: 0
Right / secondary button
Not observed yet
Down: 0 · Up: 0
Back / button 4
Not observed yet
Down: 0 · Up: 0
Forward / button 5
Not observed yet
Down: 0 · Up: 0
Wheel delta up
Not observed yet
Wheel delta down
Not observed yet

Pausing clears a held highlight without creating a release event. Resume and complete another press-and-release if a checklist item is still incomplete.

Choose the next check

Use a focused test for a specific symptom, then compare the behavior in another app or browser before drawing a hardware conclusion.

How to use this mouse test

Observe one control at a time, keep a repeatable record, and choose the next check from the results.

Use the controls your device actually has. A three-button mouse is not expected to produce Back and Forward events.

What it observes

The page shows five browser button identities, held states, down and up counts, and horizontal or vertical wheel delta directions.

What to compare

Repeat a deliberate press, hold and release. If the received events differ from what you did, compare the same action in another app and check device mappings.

Buttons and settings

Left and right follow your operating system mapping. Side buttons can be reassigned to shortcuts, and wheel clicks are separate from wheel rotation.

Browser limits

The page only sees events delivered to its focused area. Browser navigation or system shortcuts may intercept side buttons. Missing events do not identify a hardware fault.

Touch and trackpads

Touch and pen presses are excluded from button observations. Trackpad mouse and wheel events can appear, so these results do not identify a physical mouse.

Mouse test questions

Understand the observations before drawing a conclusion about your device.

How do I test all five mouse buttons?

Start the test and keep the pointer inside the outlined area. Press and release Left, Middle, Right, Back and Forward if your mouse has them. The checklist records received down and up events. The first Start click is not a test press.

Why does a side button not light up?

Your browser, operating system or mouse utility may reserve Back and Forward or remap them. The page may never receive those events, and a side button can still navigate away. Check the assigned action and compare another application.

Can I check whether a button stays held?

A received press highlights the button until its matching release reaches the page. Leaving the area, changing focus or pausing clears the highlight without inventing a release event. This is a browser observation, not a hardware certification.

Are wheel events the same as physical wheel notches?

No. The browser reports deltas in pixels, lines or pages. Trackpads can send the same events. Their sign does not prove how far a wheel moved or whether the page itself scrolled.

Which test should I use next?

Use Double Click Test for repeated button input, Scroll Test for a timed wheel comparison, CPS or Right Click Test for clicking speed, and Mouse Polling Rate Test for browser-observed movement sample rate.

Need help choosing a test?

Describe your device, browser and the action that produced an unexpected result.

Contact support

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