How to interpret the result
Fixed bright patches that remain in the same place across small viewing-angle changes are stronger evidence of non-uniformity than glow that follows your head position.
BL / 4 min
Backlight bleed and uniformity
Use black and low-gray fields to inspect bright corners, edge leakage, clouding, and viewing-angle effects.
Local-firstNo accountExportable report
LIVE
LOCALLive test
ESC
What this browser test can and cannot prove
Camera photos exaggerate or suppress dark-screen defects. Ambient light, panel technology, brightness, local dimming, and exposure all affect the result.
REPORT
Reports →Keep this result in a local inspection report.
RELATED
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Inspect viewport size, screen resolution, pixel ratio, orientation, color depth, and fullscreen behavior.
Open testKNOWLEDGE
Related guides
Dead pixel vs. stuck pixel: what the screen pattern actually shows
A cautious way to separate persistent black points, color-locked subpixels, dust, reflections, scaling artifacts, and intermittent defects.
Read guideBacklight bleed vs. IPS glow
Why dark-screen photos are misleading and how position, angle, brightness, exposure, and panel technology change what you see.
Read guide