Mouse & Keyboard Test

Why Essential Peripheral Testing Matters

Whether you are a competitive gamer, a professional typist, or a software developer, the integrity of your input devices is paramount. A malfunctioning keyboard or a skipping mouse can disrupt workflow and ruin gaming sessions. Using an online keyboard and mouse tester provides immediate visual feedback to verify that every switch, sensor, and button is registering correctly with your computer. Regular testing ensures your hardware is performing at its peak potential.

Comprehensive Keyboard Testing Features

A robust key test goes beyond simply checking if a letter appears on the screen. It analyzes the mechanical performance of your device.

Identifying Dead Keys and Stuck Switches

The most common issue users face is a "dead key"—a specific switch that fails to register a command. Conversely, a "stuck key" registers continuous input without physical actuation. Our testing tool highlights active inputs in real-time, allowing you to instantly spot switches that are unresponsive or triggering "chatter" (double typing).

Understanding Ghosting and N-Key Rollover (NKRO)

For gamers, keyboard ghosting is a critical issue. This occurs when a keyboard fails to register a keypress because multiple other keys are being pressed simultaneously. Our tool helps you test your keyboard’s Key Rollover capabilities. By pressing multiple keys at once (e.g., WASD + Space + Shift), you can verify if your device supports 6-Key Rollover (6KRO) or full N-Key Rollover (NKRO), ensuring no command is lost during intense gameplay.

Verifying Mouse Performance and Precision

Your mouse is your primary navigation tool. Testing its accuracy is just as important as testing your keyboard.

Mouse Button Response Test

Over time, mouse switches (particularly Omron or Huano switches) can degrade, leading to the dreaded "double-click" issue or missed clicks. This tool allows you to isolate and test the Left Click, Right Click, and Middle Click independently. It also supports testing side buttons (MB4/MB5) often used for macros in productivity software and gaming.

Scroll Wheel and Sensor Tracking

A faulty scroll wheel can jump or scroll in the wrong direction. Our visualizer tracks the scroll direction (up/down) to ensure the encoder is functioning correctly. Additionally, by moving your mouse across the screen, you can visually verify that the sensor is tracking smooth cursor movement without jitter or spin-outs.

Troubleshooting Hardware Issues

If you discover a fault during your test, consider these steps before replacing your device:

• Clean the Switches: Compressed air can remove dust causing stuck keys or scroll wheel jumps.
• Check Connections: Ensure your USB cable is fully inserted or try a different USB port.
• Update Drivers: corrupted drivers can cause input lag or unrecognized buttons.
• Test on Another PC: Isolate the issue to ensure it is the hardware, not the operating system.

Frequently Asked Questions (FAQ)

Q: Why is my keyboard typing two letters when I press the key once? A: This phenomenon is known as "Key Chatter." It is a common mechanical failure where the metal contacts in the switch vibrate, sending multiple signals. You can try cleaning the switch with isopropyl alcohol, but often the switch needs replacement.

Q: How do I test for keyboard ghosting? A: To test for ghosting, press and hold a combination of keys you typically use simultaneously (like W, A, and Shift). If one of the keys does not light up on the screen while the others do, your keyboard is experiencing ghosting.

Q: What is the difference between 6KRO and NKRO? A: 6KRO means the keyboard can only handle 6 simultaneous key presses. NKRO (N-Key Rollover) means you can press as many keys as you want (even the whole keyboard), and every single one will register.

Q: Does this tool work for Mac and Windows? A: Yes. This test runs in your web browser and is compatible with Windows, macOS, and Linux operating systems. However, the "Win" key will register as "Command" on macOS.

Q: Can I test my mouse polling rate here? A: This tool focuses on button functionality and coordinate tracking. While you can see the smoothness of the movement, specific Hz testing (checking if you are getting 1000Hz or 8000Hz) requires specialized polling rate software.