Refresh Rate Test

Record visible-tab browser animation cadence and frame pacing under controlled conditions.

This check runs directly on this page without requiring fullscreen. Review what this browser test can and cannot measure.

Before you start

  • Close heavy apps and extra browser tabs.
  • Move this window to the target display and keep the tab visible during measurement.

How to run this check

  1. Close heavy apps and browser tabs for a cleaner result
  2. Open the Refresh Rate Test
  3. Click Start Measurement and keep the tab visible
  4. Wait for the measurement to complete
  5. Record the stable browser cadence and compare runs only under the same conditions

What this browser test can tell you

Can help you check

  • requestAnimationFrame cadence while the tab is visible.

Cannot measure

  • This test cannot provide panel timing certification or guarantee the configured refresh rate in hertz.
Setup, interpretation, and sources

Recommended setup

  1. Keep this tab visible and stop heavy downloads or background work.
  2. Run the check for several seconds after moving the window to the display you want to inspect.

How to interpret what you see

  • Record the stable cadence and any repeated drops seen during the run.
  • Exact signal timing requires a hardware timing analyzer or oscilloscope.

Sources

Methodology reviewed:

Why This Test Matters

The operating system, browser scheduling, graphics pipeline, current display, background load, and tab visibility all affect browser animation timing.

This visible-tab browser test records requestAnimationFrame intervals while the tab is visible. It can compare browser cadence between controlled runs, but it cannot certify panel timing or guarantee the configured signal rate.

How to Use This Test

  1. Close heavy apps and extra browser tabs.
  2. Keep this tab visible during the measurement.
  3. Move the browser window to the display you want to inspect.
  4. Click Start Measurement and wait five seconds.
  5. Record the stable cadence and repeated delayed frames; confirm signal timing separately if required.
Observed Browser Cadence
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Ready to measure
Average Frame Time
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Lower is faster
Frame Pacing Stability
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No samples yet
Click Start Measurement to record browser animation cadence.

Common Refresh Rates

60Hz
Standard office displays
120Hz
Modern TVs and tablets
144Hz
Common gaming monitors
240Hz+
Competitive gaming displays