Dead Pixel Test
Inspect your screen with fullscreen solid colors to find dead pixels, stuck pixels, bright defects, and panel problems quickly.
Display info
Use fullscreen mode for the cleanest inspection.
Resolution
0 × 0
Viewport
0 × 0
Pixel Ratio
1x
Color Depth
24-bit
Start fullscreen inspection
Cycle through white, black, red, green, and blue backgrounds and inspect the whole panel slowly.
Inspect corners, edges, and the center. Use a closer viewing distance than normal desktop use so tiny point defects are easier to spot.
What to look for
Different defects reveal themselves on different backgrounds.
- Dead pixels often stay black across all colors.
- Stuck pixels often stay visibly red, green, blue, or another bright color.
- Backlight bleed shows up more like larger glowing areas than tiny point defects.
- Smudges or dust usually move or look different from a true panel defect.
If you think the defect is stuck rather than dead, continue with How to Fix a Stuck Pixel.