Free Ghosting Test
A free ghosting test: moving blocks show trails and motion blur.
Speed control
Measuring frame rate…
Background
Dark shows black smearing best
Your Screen Info
Detected in your browser
Colour screens
Tap a colour to test it fullscreen
Custom colour
What is a ghosting test?
A ghosting test moves blocks across the screen at set speeds. When pixels change colour too slowly, you see a faint trail behind each block. That trail is ghosting.
This test shows three lanes at 1x, 2x and 4x speed on gray, dark or white backgrounds. Use it to compare monitor overdrive settings, check a new gaming monitor or see how much motion blur your screen has.
How to run the test
1
Pick a speed
Choose a speed in Speed control. 960 px/s is a good start.
2
Pick a background
Gray shows most issues, dark shows black smearing best.
3
Follow a block
Track a block with your eyes. Press Fullscreen or F for a larger view.
How to read your results
Trail behind the block
A darker or lighter smear behind the block is ghosting from slow pixel response.
Bright or dark halo in front
A coloured edge in front of the block is overshoot, often from overdrive set too high.
Black smearing on dark
Long dark trails on the dark background are common on VA panels.
Blocks look blurry but clean
Some blur is normal. Higher refresh rates reduce it.
Related tests
Refresh Rate Test
Live Hz, FPS and frame time graph
Screen Resolution Test
See your resolution, pixel ratio and more
Monitor Screen Test
Check a new or used monitor
TV Screen Test
Check a TV in its browser
LCD Screen Test
Bleed, evenness and pixels on LCD
Contrast Test
Black level, white level and sharp patterns
Frequently asked questions
What causes monitor ghosting?
Slow pixel response time. Pixels take too long to change colour, so a faint copy of the image stays behind moving objects.
How do I reduce ghosting?
Try a different overdrive or response time setting in your monitor menu, use the native refresh rate, and use a good cable.
Is ghosting the same as motion blur?
Not quite. Motion blur comes from how your eyes track motion on a screen; ghosting is a trail caused by slow pixels.
Does my refresh rate matter?
Yes. The test runs at your screen's refresh rate; higher rates show sharper motion.