How to test monitor ghosting and overshoot
A repeatable moving pattern helps describe trails or bright halos around an edge. Keep the viewing conditions and motion settings consistent when comparing display settings, and judge ordinary content as well as the pattern.
Follow a controlled moving edge
Ghosting Test provides three contrasting block shapes. Their appearance is created by your display and viewing conditions; the page does not add a synthetic trail or blur filter.
- Settle the browser on one monitor and use your normal viewing distance and brightness.
- Start motion at the default 480 CSS px/s. Follow the blocks with your eyes near the center of each pass.
- Compare mixed-gray, black, and white backgrounds at the same speed. Treat the edge-wrap jump as part of the pattern.
- Pause before changing a monitor setting. Resume explicitly after focus loss or a scheduling interruption.
Trails and overdrive overshoot
Slow pixel transitions can contribute to trailing. Overdrive is intended to accelerate transitions, but some implementations/settings can overshoot a target shade, producing a contrasting halo often called inverse ghosting. Neither a trail nor a halo is a measured response-time value on this page.
Compare one setting at a time
If the display offers documented overdrive settings, record the current one and compare an alternative while keeping speed, direction, background, and configured refresh mode the same. The strongest option is not automatically the most appropriate at every rate. Follow the device manual and avoid treating one browser session as a universal recommendation.
Separate edge trails from moving-image readability
Motion Blur Test asks you to read moving text and distinguish fine bars beside a stationary reference. That is useful for perceived clarity, while the blocks here emphasize edges and halos. Browser frame delivery, panel response, refresh rate, eye tracking, and camera exposure can influence both checks. If movement is interrupted, resume before comparing; this page cannot report response time in milliseconds.