Checkerboard Flicker Test
Only valid at native resolution, 1:1, no scaling. A coarser 4px checkerboard for panels that pass the 1px test.
checkerboard-flicker-test.mp4
MP4 · 1.2 MB
Resolution: 1920x1080
Frame rate: 60fps
Duration: 1m 8s
Format: MP4 (H.264, silent)
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Common use cases
Diagnosing eye strain
Check whether PWM brightness flicker could be contributing to eye fatigue at your usual brightness level.
Comparing BFI/strobe modes
Toggle your monitor's black-frame-insertion or strobe backlight setting while this plays to compare motion clarity.
Frequently asked questions
- Is this safe to watch?
- Yes for most viewers, but if you are sensitive to flashing content, skip this test - stop immediately if you feel discomfort.
- What does flicker look like?
- A slow-motion camera shot of your screen, or a very sensitive eye, will show visible pulsing brightness rather than a steady image.