Runs in your browser. Nothing is uploaded.
Ghosting Test
Watch four bars move at different speeds. A long trail means the pixels are slow to change.
Background
The bars run at full, half, quarter, and eighth speed.
More tests
What it measures
Trails
Four bars at full, half, quarter, and eighth speed.
Background
Dark, light, or striped, so the trail is easier to see.
Questions
What does a trail mean?
The panel is still showing the previous position. A long trail is slow pixel response, not a slow mouse.
Will this change my refresh rate?
No. It only draws moving blocks. The refresh-rate test is the one that times frames.