Black Screen – Free fullscreen black screen for testing and eye rest

Summary: Black Screen is a free online tool that provides a fullscreen black display for dead pixel testing, screen cleaning, eye rest, and video call lighting without requiring downloads.

What it does

It displays a fullscreen black screen with one click, accessible directly online without installation.

Who it's for

Users needing to test screens, clean displays, reduce eye strain, or adjust video call lighting.

Why it matters

It simplifies screen maintenance and improves visual comfort by offering an immediate fullscreen black screen.