HOW TO USE
1) Pick a PATTERN on Page 1
2) Press START for fullscreen
3) Watch for smoother motion at higher Hz
4) Exit with ESC or tap/click
WHAT YOU’RE SEEING
CADENCE: how often frames arrive (browser timing)
ESTIMATE: closest bucket (60/90/120/144/240)
JITTER: uneven frame times = judder
NOTE: this is not a lab instrument
TIPS
Disable battery saver (may cap refresh)
Close heavy tabs for cleaner cadence
Try another browser to compare
FAQ
Why not exact Hz? browsers report cadence imperfectly.
Why does it lock at 60? power mode or OS cap.
What’s best pattern? SWEEP BARS for most people.
How do I exit? ESC or tap/click.
MINI BLOG (SHORT)
Higher refresh can reduce perceived blur and input latency.
This page helps you *see* cadence differences with simple motion cues.
KEYWORDS (NATURAL)
refresh rate test • hz test • 120hz test
refresh visualizer • motion smoothness test
cadence meter • frame time jitter