Dead pixel test
Go fullscreen. Find bright spots, stuck pixels, and the tiniest flaws.
LIVE TEST WORKSPACEVISUAL OBSERVATION
A clean screen starts with a closer look.
Clean your display, enter fullscreen, and inspect each color.
← → Change colorEsc ExitSwipe on touch screens
SCREEN · CSS PIXELS—
DEVICE PIXEL RATIO—
What do you see?
Your observation is the result.
Check the same spot on several colors, and rule out dust. Screenshots cannot capture physical pixel defects; use a separate camera if you need evidence.
How to use this test
- Wipe away dust and enter fullscreen.
- Inspect white, black, red, green, and blue from edge to edge.
- Exit and record what you actually observed.
Can a screenshot prove a dead pixel?
A screenshot records the rendered image, not the light emitted by the panel. Photograph the physical display with another camera, and confirm the same spot across multiple colors.
Where is my test data stored?
The test runs on your device. Results are only saved to this browser when you choose Save. Clear them from the report page at any time. Audio and video are never uploaded.