display test
Display Uniformity Test
Use full screen and inspect the panel from your normal viewing position.
No accountLocal where possibleRetest anytime
Inspect the full field for obvious tint, brightness or uniformity differences
CSS screen—
Viewport—
Pixel ratio—
Refresh estimate—
DeviceOK can display patterns and estimate browser frame timing, but visual panel defects still require your inspection and professional measurements require dedicated hardware.
Private by design
The pattern is generated locally.
Use the result as evidence, not a guess.
This test checks
- Visual brightness uniformity
- Visual tint uniformity
How to read it
The browser cannot quantify panel uniformity without measurement hardware.
Camera exposure can make photos of uniformity misleading.