Dead Pixel & Display Test
Inspect a display in fullscreen with solid colors, uniformity fields, gradients, fine patterns, geometry, contrast and motion references.
Choose a Display Test
Select a category, then inspect its patterns in fullscreen.
Selected Test
Dead & Stuck Pixels
Starting pattern: White. Scan the entire display slowly, especially its edges and corners.
Automatic switching
Before You Test
- Clean the screen and use its native resolution where possible.
- Consider browser zoom, operating-system scaling and suitable room lighting.
- All findings are visual observations. A browser cannot inspect physical pixels or certify backlight, gamma, response time or color accuracy.
- Fullscreen may not cover areas reserved by the operating system.
Dead & Stuck Pixels
White · 1/9
Scan the entire display slowly, especially its edges and corners.
How to use Dead Pixel & Display Test
- 1
Clean the screen, use its native resolution where possible and choose a test category.
- 2
Select a starting pattern or click Run All Categories for a guided fullscreen sequence.
- 3
Scan the entire panel, using Previous and Next or optional automatic switching for static patterns.
- 4
In Dead & Stuck Pixels, enable Mark Pixels to record suspicious locations; use motion speed controls in Motion & Ghosting.
- 5
Exit fullscreen when finished and Reset to clear markers and restore the initial test.
Frequently asked questions
About Dead Pixel & Display Test
Different display defects reveal themselves under different stimuli. Uniform primary colors expose pixels that fail to follow the image, dark fields reveal edge glow and clouding, gradients show banding, and fine lines uncover scaling or sharpness artifacts. Geometry and contrast references extend the inspection beyond dead pixels.
Fullscreen controls let you move through patterns, pause automatic switching, mark suspected pixel locations and adjust the motion sample. The browser cannot read physical panel health, so every finding is a visual observation. Fullscreen coverage can also exclude areas reserved by the operating system.