—— bit Browser reportSmall bright shapes on a dark background are useful for inspecting halo behavior. Compare shape, size and position while keeping the display settings and viewing conditions unchanged.
Try a block, circle, star or subtitle-like pattern. A smaller bright shape can reveal a different relationship with the surrounding dark area from a large shape. Change one parameter at a time so the comparison remains understandable.
A halo can depend on local-dimming behavior, the selected picture mode and your viewing angle. Room light and camera exposure change how visible it looks. Compare the synthetic pattern with real subtitles or other familiar content before deciding whether the effect is distracting.
A browser cannot count dimming zones or assign a hardware display rating by observing its own image. The shape sizes here are CSS dimensions, not a map of the backlight. Use them to describe behavior and document settings, alongside the device's specifications and a suitable review method.
Halos around bright objects depend on local dimming, viewing angle and brightness. Judge them alongside normal content.
Use your usual dimming settings in a dim room.
Switch bright-object size and shape.
Inspect around bright objects and along moving edges.
Patterns support visual inspection. Quantitative color accuracy, brightness, gamut coverage and response time require appropriate instruments and methods.
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.