How to interpret the result
A median near 60, 90, 120, 144, or another configured mode is expected. Spikes can come from browser scheduling, power saving, background work, variable refresh, or display handoff.
HZ / 3 min
Online monitor refresh-rate and frame-pacing test
Estimate the browser’s animation cadence and inspect frame-time stability with requestAnimationFrame.
Local-firstNo accountExportable report
LIVE
LOCALLive test
Waiting for a test.
What this browser test can and cannot prove
This is a timing estimate, not an oscilloscope or high-speed-camera measurement. It cannot prove panel response time, scan-out behavior, overdrive, or exact VRR range.
REPORT
Reports →Keep this result in a local inspection report.
RELATED
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Open testColor gradients and banding
Inspect grayscale and RGB ramps for abrupt steps, clipping, tint, posterization, and dithering patterns.
Open testGPU and WebGL capability test
Create a local WebGL context, inspect limits and extensions, and run a brief animation workload.
Open test