Dead Pixel Test
Display solid colors in fullscreen to identify dead, stuck, or hot pixels on your monitor or laptop screen.
Start Dead Pixel Test
This will display solid colors in fullscreen mode. Look carefully for any pixels that don't match the displayed color.
Click or use arrow keys to cycle colors. Press Escape to exit.
Examine your entire screen carefully for pixels that appear differently from the surrounding color.
How Does the Dead Pixel Test Work?
- Click the Start button or select a color to enter fullscreen mode.
- Your entire screen will be filled with a solid color.
- Carefully scan the screen for any pixel that appears different from the surrounding color.
- Use arrow keys or click to cycle through all test colors.
- Dead pixels appear as black dots, stuck pixels appear as bright dots of a single color.
Frequently Asked Questions
- What is a dead pixel?
- A dead pixel is a pixel on your display that is permanently off and appears as a small black dot regardless of what is displayed. Dead pixels are caused by manufacturing defects or physical damage to the display.
- What is a stuck pixel?
- A stuck pixel is always lit in a single color (red, green, or blue) regardless of the image being displayed. Unlike dead pixels, stuck pixels can sometimes be fixed by rapidly changing colors or gently applying pressure.
- How can I fix a stuck pixel?
- Try running the dead pixel test rapidly cycling through colors for 10-20 minutes. Some stuck pixels can be recovered this way. If that doesn't work, gently applying pressure with a soft cloth while the pixel displays colors may help. Dead pixels, however, typically cannot be fixed.
- Is this test accurate?
- Yes. Displaying solid colors in fullscreen is the standard method used by display manufacturers and reviewers to check for pixel defects. Make sure your screen is clean and viewed at normal distance.