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Mouse Diagnostic

Mouse Button Tester

Test left click, right click, middle scroll click, and side thumb buttons (MB1–MB5) on your mouse online for free. Real-time click counter and visualizer.

Left Click (MB1)0 clicks
Middle Click (MB3)0 clicks
Right Click (MB2)0 clicks
Side Button 1 (Back)0 clicks
Side Button 2 (Forward)0 clicks

Mouse Button Diagnostic Benchmarks

Actuate each switch individually and test continuous hold-and-drag reliability:

Crisp Actuation (100% Signal)

Instant green illumination on press; stable solid hold when depressed; zero dropped clicks during drag.

Hold-Release Intermittency

Holding down the button flickers on and off. Indicates oxidized microswitch contacts or switch leaf fatigue.

No Input Registered (Dead Switch)

Button produces physical click sound but fails to fire software signal. Indicates broken solder joint or severed flex ribbon.

How to Get Started

Just three steps to run a complete controller test and understand your controller's health status.

01

Connect Controller

Connect your controller to your computer via USB cable or Bluetooth. If the browser doesn't respond, press any button on the controller to activate the connection.

02

Button Detection

Press each button in the visual interface and confirm the corresponding area lights up on screen. This helps troubleshoot unresponsive or double-clicking buttons.

03

Sticks & Vibration

Rotate the sticks to check linearity and drift issues; click the vibration test button to feel if the left and right motor feedback is working properly.

What would you like to do next?

Select a diagnostic calibration suite, deadzone analyzer, or high-frequency overclock tool.

Fix

Repair & Calibration

Calibrate zero-point offsets or follow step-by-step repair guides.

WebHID Calibration
Optimize

Game Deadzones

Calculate exact radial vs axial deadzone overlays for Fortnite, Apex, & COD.

Deadzone Calculator
Telemetry

Overclock & Circularity

Verify browser-observed update timing Hz stability and statistical circularity grades.

Hz & Circularity Tools

Is your mouse double-clicking on single taps?

Run our specialized switch bounce chatter test to detect microswitch degradation.

Double-Click Test Scroll Wheel Test

Related Diagnostic Tools

Double-Click Test

Detect mechanical switch bounce chatter.

Scroll Wheel Test

Test scroll direction & encoder jumping.

CPS Test

Test clicks per second speed.

The Architecture of Gaming Mouse Microswitches & Side Buttons

Modern gaming mice integrate a combination of specialized microswitches across different button positions:

Standard Mouse Button Mapping (MB1 through MB5)

  • MB1 (Left Click - Event Button 0): Primary fire switch. Typically uses high-durability microswitches (Kailh GM 8.0, Huano Blue Pink Dot, or TTC Gold) rated for 80 million clicks.
  • MB2 (Right Click - Event Button 2): Secondary aim-down-sights (ADS) switch.
  • MB3 (Middle Click - Event Button 1): Located beneath the scroll wheel spindle. Often utilizes a low-profile square tactile switch with higher actuation force (120g–180g) to prevent accidental clicks while scrolling.
  • MB4 / MB5 (Side Buttons - Event Buttons 3 & 4): Thumb buttons mounted on an auxiliary vertical daughterboard, connected via flexible flat ribbon cables.

Diagnosing Switch Hold Failures in FPS Games

A common sign of microswitch degradation is an inability to sustain continuous automatic weapon fire or dragging items across inventory slots. When the internal leaf spring loses tension, minor changes in finger pressure break electrical continuity, resulting in dropped weapon spray patterns.

Controller Hardware Glossary & Tips

Stick Drift & Deadzones

Stick drift occurs when analog sticks register input without being touched. This is typically caused by physical wear in traditional carbon-film potentiometers. A deadzone is a software-level threshold (e.g., 5-10%) applied to ignore these microscopic false inputs.

Hall Effect Sensors

Unlike traditional ALPS potentiometers, Hall Effect modules use magnetic fields to measure stick position. Because there is no physical contact or friction between the internal components, they are virtually immune to wear-induced stick drift, drastically extending the controller's lifespan.

Polling Rate (Hz) & Input Latency

Polling rate is how often your controller sends data to your device, measured in Hertz (Hz). A standard Bluetooth connection yields around 125Hz (8ms latency). Overclocking or using a wired USB connection can push this to 500Hz-1000Hz (1ms-2ms latency), critical for competitive gaming.

Circularity Error

When you rotate a joystick along its outer edge, a perfect module should trace a mathematically perfect circle. Circularity error measures the deviation from this perfect circle. High deviations (>15%) can result in uneven diagonal movement speeds in FPS games.

Frequently Asked Questions

Everything you need to know about testing your controller.

How do I test all buttons and side keys on my mouse online?

Click any button on your mouse—including Left Click (MB1), Right Click (MB2), Middle Scroll Click (MB3), Side Back (MB4), and Side Forward (MB5). The interactive visualizer illuminates the corresponding button in emerald green, counts total clicks, and tests continuous hold actuation.

Why does right-clicking not open a context menu during testing?

Our testing pad intercepts and suppresses native browser contextmenu events (via event.preventDefault()), allowing you to test right-click switch actuation speed and click spamming smoothly without annoying popup menus.

Why are my mouse side buttons (MB4 / MB5) not registering in browser tests?

If side buttons fail to highlight, ensure your mouse manufacturer software (Logitech G HUB, Razer Synapse, Glorious Core) has not disabled the side keys or rebound them to complex desktop shortcuts like Volume Up/Down.

What is the difference between standard and optical microswitches?

Standard mechanical microswitches (Omron, Kailh, Huano, TTC) use physical gold-plated metal leaf springs that can oxidize or chatter over time. Optical microswitches use infrared beams to detect actuation, providing immune protection against double-clicking.

How do I fix a sticky or unresponsive mouse button?

Unresponsive buttons are often caused by dust, skin oils, or micro-debris lodged around the button plunger stem. Dispense 1–2 drops of 99% isopropyl alcohol into the switch stem and actuate rapidly to flush contaminants.

How this test works & its limits
  • This test reads your controller through the browser's standard Gamepad API — no drivers, no installs, nothing leaves your device.
  • Readings depend on connection mode: Bluetooth reports at lower rates than USB. Compare like-for-like (wired vs wired).
  • We measure the input reaching the browser — display lag and game-engine queues are outside this test's view.
  • A clean reading now does not guarantee no drift in-game: deadzones differ per game, and wear develops over time. Use the Drift Timeline to track yours.
  • This is a diagnostic, not a hardware-lab certification. For repair or RMA decisions, confirm with a second run or second tool.
Read the full methodology
100% Client-Side

All Gamepad API data stays in your browser. Zero tracking or data collection.

Instant Results

No downloads, plugins, or software installation needed. Works instantly.

Free Forever

No paywalls, subscription requirements, or hidden usage limits.