Display Uniformity Test
Use full screen and inspect the panel from your normal viewing position.
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.
What happened?Choose the result you observed.
Privacy: The pattern is generated locally.
What this test tells you
This test checks
- Visual brightness uniformity
- Visual tint uniformity
How to read the result
The browser cannot quantify panel uniformity without measurement hardware.
Camera exposure can make photos of uniformity misleading.