Mouse Button Test - Check Every Mouse Button Online

Test left, right, middle, and side buttons plus scrolling on a live mouse diagram.

Mouse Button Test

Operate each mouse button and the scroll wheel inside the area below — the mouse diagram reacts in real time.

Work inside this area (the right-click menu is disabled here)

Total clicks0

Left click0×

Right click0×

Wheel click0×

Side (back)0×

Side (forward)0×

Scroll count

↑ Up

↓ Down

← Left

→ Right

Cursor positionX: 0 / Y: 0

Event Log

Use your mouse and events will be logged here

What Is a Mouse Button Test?

A tool for verifying every button on your mouse responds correctly — left, right, wheel click, and side buttons all light up on screen as you press them.

When a side button dies or right-click turns flaky, this test separates a hardware fault from a software setting in seconds.

Isolating an Unresponsive Button

If It Fails in This Test Too

The mouse itself, its cable or wireless link, or the PC's recognition of it is the likely culprit. Narrow it down in order: try another USB port, then another computer.

If It Works Here but Fails in One Program

The hardware is fine. Look at that program's button bindings, or at remappings in your mouse software. A side button assigned a special function may respond in a browser yet be ignored elsewhere.

Common Causes

Button remapped in the mouse's companion software
Low battery on a wireless mouse causing dropped presses
Insufficient power through a USB hub
Worn internal switch that skips presses
Dust or grime lodged in the button gap

One press registering twice is called chattering, usually caused by internal switch wear. A dedicated double-click test can diagnose it in detail.

Frequently Asked Questions

Q. My side buttons don't respond

A. Browsers mainly receive mouse buttons 0-4. If your mouse driver (Logitech / Razer / SteelSeries, etc.) has remapped a side button to a special function such as copy & paste, the press may never reach the browser. Reset the button mapping to default in your mouse software and retest.

Q. The right-click menu keeps opening

A. The browser's native context menu can take priority in some situations. During the test, press the right button once at a time instead of spamming it, and check the response.

Q. The wheel click (middle button) doesn't register

A. Pressing the wheel can trigger the browser’s auto-scroll feature (a scroll cursor appears) and swallow the input. If the scroll cursor shows up, press Esc to dismiss it and click again.

Q. How do I tell real hardware failure from a settings issue?

A. If the same button fails in other browsers and on another PC, hardware failure is likely. If it only fails in the browser, suspect software or driver settings instead.

About the Mouse Button Test

A tool for checking that every button and the scroll wheel on your mouse works correctly, using a live mouse diagram. Press a button and the matching part lights up in real time.

What You Can Check

Left / right click — response and click counts
Wheel click (middle button) — press detection
Side buttons (back / forward) — detected as browser buttons 3 and 4
Scrolling (all four directions) — direction and delta values
Extra buttons — mice with 5+ buttons supported (shown by button number)

When to Use It

Verify every button on a new mouse works properly
Check whether your side buttons are recognized by the browser
Investigate unresponsive buttons or double-input (chattering)
Confirm scroll direction and responsiveness

* Side buttons (back / forward) may be undetectable depending on browser and OS settings. Some mouse drivers map side buttons to keyboard shortcuts, in which case they are not detected as mouse buttons.