UFO Scanline Test
Measure motion clarity and ghosting by tracking a moving UFO object on your display.
Motion blur and trailing artifact visibility behind a moving object are evaluated. Click Start Test and observe the moving object for trails, blur, or double-imaging.
What does this test measure?
Motion blur and trailing artifact visibility behind a moving object are evaluated.
Why is this test important?
Measure motion clarity and ghosting by tracking a moving UFO object on your display.
How do you run the test?
Click Start Test and observe the moving object for trails, blur, or double-imaging.
How should results be interpreted?
Clear edges with no trails indicate good pixel response; blur means slow response time.
Normal and problematic results
Clear edges with no trails indicate good pixel response; blur means slow response time.
Technical limitations
Results depend on refresh rate, overdrive settings, and ambient light conditions.
Why can the score decrease?
Unstable measurements, denied permissions, unsupported browser APIs, background load, power saving, or an incomplete test can affect the result. When a score changes, the result screen explains the reason.
What should you do if a problem is found?
Enable overdrive in monitor OSD, increase refresh rate, or reduce ambient light.
Example Result Explanation
Frequently Asked Questions
Does this test provide a definitive hardware diagnosis?
No. The test measures signals the browser can safely access and clearly explains its technical limits.
Why can results change between runs?
Background applications, power mode, network conditions, permissions, and operating-system timing can affect results.
How should I repeat the test if I see a problem?
Repeat it on the same device and browser while changing only one condition, so the source of the difference is easier to identify.