Screen & display
Interactive · Runs in this browser
Inspect the panel against black, white, primary colors, secondary colors, and neutral gray. Enter fullscreen when available and move through each pattern using taps, clicks, arrow keys, or the visible controls.
Inspect the display at normal viewing distance while solid white, black, red, green, blue, and gray screens are shown. A browser test cannot repair or certify a physical panel.
Tap the screen or use Left/Right, Space, or Enter to change color. Use Escape or the visible Exit test control to leave.
Transparent method
This tool reports only interactions and browser APIs it can observe. It does not infer hidden hardware specifications or turn unsupported access into made-up results.
Useful context
A dead pixel usually stays dark, while a stuck subpixel can remain red, green, blue, or bright. A browser pattern only helps you spot the symptom.
Yes. Dust can look like a dark pixel, so inspect a clean screen at a comfortable brightness.
Troubleshooting
Keep checking