Gradient & banding test
Inspect smooth black-to-white and RGB transitions for visible steps.
LIVE TEST WORKSPACEVISUAL PATTERN · OBSERVATION
Look for steps, stripes, or crushed details in each transition.
Switch between ramps and steps. Look for abrupt stripes or missing shadow detail.
Enter fullscreen test
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
- Set the display to its normal picture mode and view the gradient fullscreen.
- Look for abrupt steps, stripes, or detail loss in dark and bright areas.
- Repeat after disabling HDR or enhancement modes for comparison.
Does visible banding prove a panel fault?
Not by itself. The source image, browser color management, compression, and display mode can all create steps. Use this as a visual comparison.
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.