—— bit Browser reportSampling frame rate…A single color removes the detail that can hide a small screen defect. Use several backgrounds, then compare any suspicious area at the same physical position on your display.
A middle-gray field is useful for inspecting broad tints, patches and persistent image outlines. Keep brightness and room light consistent, then compare lighter and darker grays in the grayscale test to understand the pattern more fully.
A bright point is easiest to spot against black. A dark point is usually clearer on white, while red, green and blue can help reveal a subpixel that behaves differently from its neighbors. Clean the screen first: dust and reflections can look surprisingly similar to a defective pixel.
Large areas of white and neutral gray make broad brightness differences or color casts easier to see. Look straight at the display from your usual distance, then check the corners. A change that follows your viewing angle may have a different cause from a mark that stays in one place.
Switch between several colors and return to normal content before deciding what you see. Photograph physical defects with another camera; a system screenshot captures the image sent to the display, not a damaged pixel on the panel. Keep your observations alongside the manufacturer's policy for your particular model.
Intensity changes the web RGB pattern, not your hardware backlight.
Choose a comfortable device brightness and viewing distance.
Open full screen and adjust pattern intensity as needed.
Compare each area and cross-check with other colors.
Patterns support visual inspection. Quantitative color accuracy, brightness, gamut coverage and response time require appropriate instruments and methods.
Clean the screen according to the manufacturer's instructions, then switch solid backgrounds. Recheck any anomaly that remains in the same position.
A system screenshot cannot capture physical panel defects. Use a camera.
No. It provides display test patterns and browser information. Screen anomalies that persist at the same position need visual inspection and, when needed, professional assessment.
Open the patterns and guides for your device. True full screen and touch depend on the browser; an immersive page preview remains available when full screen is unsupported.
No installation is needed. Patterns, calculations and interactions run locally in your browser; theme preferences stay on your device.
Rule out dust, reflections and display settings. Repeat under the same conditions, photograph defects that remain in the same screen position and check the device warranty policy.