Dead pixel, stuck pixel or screen artifact?
A webpage cannot see the physical pixels in front of you. It can only provide clean test colors so your eyes can check whether the same spot stays wrong across different backgrounds.
Run the clean-screen check first
Before testing, gently clean the display using the manufacturer's recommended method and remove obvious reflections. Dust, fingerprints and tiny surface marks can imitate a dark pixel. Then open the screen visual test and inspect the same spot on white, black, red, green and blue.
What the color pattern can tell you
A spot that remains dark on bright colors, remains bright on black, or shows the same incorrect color across multiple fields is worth documenting. People often use “dead” and “stuck” loosely; BenchRush does not classify the electronics automatically because JavaScript has no camera view of the panel. The useful evidence is whether the artifact stays at the same physical location while the displayed content changes.
Rule out webpage and scaling artifacts
Move or scroll normal content and see whether the suspicious mark stays fixed to the physical screen. If it moves with the webpage, it is content rather than a panel pixel. Browser zoom and display scaling can make thin lines or subpixel rendering look unusual, so the solid-color full-screen view removes most page detail from the comparison.
Use full screen when available
Browser chrome and toolbars can distract from edge inspection. The BenchRush screen test offers a full-screen mode when the browser allows it. Exit full screen at any time if you are unsure where the controls went. The page does not capture an image of your display or upload a photo.
Avoid aggressive physical “fixes”
Do not press, rub or flex the panel in an attempt to change a suspicious pixel unless the display manufacturer explicitly instructs you to do so. Physical pressure can damage modern LCD and OLED panels. A browser test is for observation and documentation, not panel repair.
Document before warranty support
If the same artifact persists across colors, inputs and applications, take a clear photo for your own support record and check the manufacturer's pixel/warranty policy. Policies vary by maker, model and region, so BenchRush does not claim that any specific number of affected pixels qualifies for replacement.
What the page cannot detect
Without an external camera or sensor, a webpage cannot know whether a physical pixel is dead, stuck or contaminated. That is why BenchRush deliberately calls this a visual test and never produces an automatic “panel health” score.