Screen Contrast & Gray Levels Test
Show dark and light grayscale steps for basic contrast inspection.
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INSTRUCTIONS / TEST
How to run this test
Inspect near-black and near-white steps with normal room lighting and brightness.
What this test cannot guarantee
A visual display test does not provide a calibrated contrast ratio.
PRIVACY BY DESIGN · Tests run on your device. No microphone, camera or sensor data is uploaded to DeviceCheckup.