How to Use the Dead Pixel Tester
Quickly identify dead or stuck pixels on your monitor by displaying pure colors in full screen.
Steps
- Click "Start Test" to enter full-screen mode.
- The screen will turn completely white. Carefully inspect the entire screen for any black or off-colored dots.
- Click your mouse (or tap the screen) to cycle through primary colors: Red, Green, Blue, and Black.
- Press "Esc" or click the close button to exit the test when finished.
About This Tool
Dead pixels are hardware defects where a sub-pixel fails to turn on or gets stuck on a single color. By cycling through absolute pure RGB colors, this tool makes malfunctioning pixels highly visible against the uniform background.
FAQs
1. Can this tool fix my dead pixels?
No, this tool is strictly for detecting dead or stuck pixels. Hardware defects usually cannot be fixed with software.
2. Why do I need to test multiple colors?
Pixels are made of red, green, and blue sub-pixels. A pixel might work fine on red, but fail on blue. Testing all colors ensures you catch any partially defective pixels.
3. Does this work on mobile phones?
Yes. The tool will enter full-screen mode on any capable mobile browser so you can inspect your phone's screen.