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12MOTION / FRAME TIMING

Refresh Rate & Motion Test

Check what refresh rate your browser is actually running at, how evenly frames arrive and how many are dropped, then follow a target that moves a fixed distance every frame to judge blur and ghosting.

  • 2 patterns
  • Fullscreen
  • No install

Browser-generated pattern · Not a laboratory measurement

PATTERNS / 02

Patterns in this test

Each pattern targets a different symptom. Start from the top, or jump straight to the one you need.

  1. 01

    Moving target

    Follow the target with your eyes. Sharp edges mean good motion clarity; a smeared or doubled outline means blur or ghosting.

  2. 02

    Frame timing

    One cell lights per frame. Gaps, a rising dropped count or a worst time far above average mean uneven frame delivery.

PROTOCOL / 01—04

How to use this test

Keyboard and touch

→ · Space · Enter · click
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Keep the hint panel visible
Esc
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Tap or move
Show controls on touch screens and mice
  1. 01

    Clean the screen gently and let it reach its normal operating temperature.

  2. 02

    Set browser zoom to 100% and use the brightness and picture mode you normally use.

  3. 03

    Start fullscreen mode. Each pattern shows a short hint about what to look at.

  4. 04

    Observe from your normal position first, then move closer only to inspect a detail.

OBSERVE

What to look for

  • A refresh estimate that matches the rate you selected (60, 120, 144 Hz…)
  • Blurred edges, dark trails or bright halos behind the moving target
  • Dropped frames or a worst frame time far above the average

INTERPRET

How to read the result

If the estimate stays at 60 Hz on a high-refresh display, check the operating-system display settings, the cable and the browser power mode. Dark trails indicate slow pixel response; bright halos indicate aggressive overdrive (inverse ghosting).

LIMITS

Limits of a browser test

RequestAnimationFrame timing is not laboratory instrumentation. Background load, battery saving, the compositor and variable refresh rate can all affect the estimate.

FAQ

Frequently asked questions

01Does the estimate prove my exact refresh rate?

No. It shows how often the browser paints, which normally matches the active refresh rate. It may differ from a hardware measurement, especially with variable refresh rate or power saving.

02Why does my 144 Hz monitor show 60 Hz?

The display may be set to 60 Hz in the operating system, connected with a cable or port that limits bandwidth, or the browser may be throttled by battery saving. Check each link.

03What causes inverse ghosting?

Aggressive overdrive overshoots the target value and creates a bright or dark halo trailing moving objects. A lower overdrive setting usually removes it.

NEXT / SCREENPROBE

Continue checking

01

Black screen

Pure #000000 with no overlays, compression or glow.

↗ 02

Dead pixel test

Cycle exact solid colours to find dead and stuck subpixels.

↗ 03

Grayscale & gamma

Neutral steps, a gamma chart and RGB channel tracking.

↗
FEEDBACK / 01

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