White Test Screen Check – Free online tool to detect screen defects

Summary: White Test Screen Check is a free online tool that helps identify screen defects and stuck pixels by displaying a white screen. It requires no downloads and can also be used to brighten displays.

What it does

The tool displays a white screen to reveal screen defects or stuck pixels and can brighten the display for testing purposes.

Who it's for

It is designed for users needing to diagnose screen issues or adjust display brightness without installing software.

Why it matters

It provides a quick, accessible way to detect screen problems and assess display quality.