Dead Pixel Check

Dead pixels are spots on your screen that fail to change color. They usually appear as black dots (dead) or bright colored dots (stuck).

Instructions

Click "Start Screen Test" to enter full screen. Click repeatedly to cycle through Red, Green, Blue, White, and Black backgrounds. Look closely for any tiny dots that do not match the background color.

CPS Speed Test

The "Clicks Per Second" test measures how fast you can trigger mouse inputs. This is a popular metric in the Minecraft PVP community (Jitter clicking, Butterfly clicking).

What is a good CPS?

• Casual: 4-7 CPS
• Gamer: 8-12 CPS
• Pro/Glitch: 15+ CPS (Drag clicking)

Mouse Polling Rate (Hz) Checker

Polling rate (measured in Hz) is how often your mouse reports its position to the computer. A higher polling rate means smoother and more responsive cursor movement.

Common Rates

• 125 Hz: Standard office mice (reports every 8ms).
• 500 Hz: Gaming standard (reports every 2ms).
• 1000 Hz: High-end gaming (reports every 1ms).

Mouse Double Click Test

Does your mouse act weird? If a single click registers as two, you might have a faulty microswitch. This issue is common in older mice as the metal contacts wear out.

How to interpret

Click the test area normally. The log should show "Normal". If you see a Warning or "DOUBLE CLICK DETECTED", your mouse sent two signals within 80 milliseconds, which is mechanically impossible for a human finger to do intentionally.

Online Microphone Test

Test your microphone volume and clarity directly in the browser. This secure tool visualizes your audio input in real-time, helping you debug issues before a call.

Privacy Note

Your audio is processed locally within your browser. No audio data is sent to any server or recorded.

Troubleshooting

If the visualizer remains flat, check your browser permissions. Click the lock icon in the address bar and ensure "Microphone" is set to "Allow". Also verify that the correct input device is selected in your OS sound settings.

Webcam Resolution & FPS Test

Is your camera working? Use this tool to see your camera feed and check technical details like resolution and aspect ratio.

Why is my screen black?

Ensure no other application (like Zoom or Teams) is currently using the camera. Only one app can access the video feed at a time. Also check browser permissions.

Low Quality?

If the video looks grainy, check your lighting. Webcams automatically increase "gain" in low light, which introduces noise. Good lighting is the best way to improve quality.

Stereo Sound Test

Verify your speakers or headphones are correctly wired for stereo sound.

How to use

• Left Channel: Should only be heard from your left speaker/earbud.
• Right Channel: Should only be heard from your right speaker/earbud.
• Both: Should be centered.

Fixing Balance Issues

If looking at the screen, "Left" is your left hand side. If the sounds are swapped, your headphones might be on backwards or your speakers plugged into the wrong ports.

Keyboard Ghosting & Function Test

Test every key on your keyboard to ensure switches are working. This tool is useful for checking "N-Key Rollover" (Ghosting) to see how many keys you can press simultaneously.

What is Ghosting?

Ghosting occurs when a keyboard cannot register multiple keys pressed at once. Cheap office keyboards often jam after 3-4 keys. Gaming keyboards usually support 6-key or N-key rollover.

Mouse Buttons & Sensor Test

Check if all your mouse buttons are registering clicks. This tool visualizes Left, Right, Middle (Scroll Wheel) clicks, and additionally side buttons (Back/Forward) if supported by your browser.

Testing Scroll Wheel

The scroll value above updates as you scroll up and down. If scrolling feels "jumpy" or goes in the wrong direction, your scroll encoder might be dirty or failing.