Dead/stuck pixels and uniformity require visual inspection. For backlight bleed, inspect a black screen in a dark room; camera exposure can be misleading.
Tests mostly run in your browser. Microphone/camera data is not saved on the server.
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How to use and interpret Dead Pixel & Display Uniformity Test
What this test checks
Shows fullscreen colors and patterns so you can visually inspect dead/stuck pixels, uniformity and backlight symptoms.
Use fullscreen colors to inspect dead/stuck pixels, uniformity and backlight bleed symptoms.
How to interpret the result
Use the visual or timing result as an initial screen check. Repeat the test fullscreen and at the display’s normal resolution for the most useful comparison.
Browser limitations
Browser tests cannot automatically prove a physical panel defect. Dead pixels, uniformity and backlight issues still require visual confirmation on the actual display.
Frequently asked questions
What does Dead Pixel & Display Uniformity Test check?
Shows fullscreen colors and patterns so you can visually inspect dead/stuck pixels, uniformity and backlight symptoms.
Can a browser confirm a dead pixel or panel fault?
It can display controlled test patterns, but the final confirmation is visual because the browser cannot inspect the physical panel itself.
What should I do if the result looks bad?
Repeat the test under the same conditions, check the suggested next diagnostic and compare with another browser, connection or device where practical. Use the related guides for step-by-step troubleshooting.