Motion Clarity Test

Adjust speed and object size, then compare moving text and high-contrast blocks at your current browser frame rate.

Motion speed

Object size

MOTION 123 ABC

This is a visual browser animation for comparison, not a calibrated pixel-response or MPRT measurement. Camera pursuit, display overdrive, frame rate, and browser composition affect perceived motion.

What the browser can measure

Start with a functional check, measure only what the browser can actually expose, then retest after one change.

ConnectChoose the actual browser-visible device or grant permission when required.

TestConfirm basic signal, input, output, preview or display behavior.

MeasureUse browser-exposed levels, timing, resolution, FPS, axes or event data.

DiagnoseCompare the symptom with the specific diagnostic instead of relying on one number.

RetestRepeat after changing the device, cable, permission, browser or system setting.

Pre-call Mic Webcam Keyboard Mouse Gamepad Display Permissions

Browser boundary
These tools observe browser APIs and local media/event streams. They cannot certify hardware condition, bypass denied permissions, or expose measurements the browser/OS does not provide.

Browser-local does not mean laboratory measurement

These pages can report Web API data such as events, stream settings, frame timing and audio samples. They do not certify hardware condition or bypass browser and operating-system limits.

Animation cadence is separated from display response time

The moving target is a browser animation reference. v258 samples requestAnimationFrame cadence and states that MPRT, pixel response, overdrive and pursuit-camera measurements are not directly measured.