Halo / Blooming Test
This test displays high-contrast moving objects (white circles) on a pure black background. Its purpose is to visually expose halo or blooming artifacts caused by local dimming zones on MiniLED/FALD displays or pixel response on OLEDs.
Note: This is a visual stimulus tool, not a laboratory measurement device.
For best results, disable "Night Mode" or "Blue Light Filter" in your OS/Browser and set your display to
its native brightness/contrast.