Our Black Screen Tool from blackscreen onl website transforms your browser into a glare-free workspace, reducing eye strain in low-light environments. Designed for developers, designers, and night owls, this tool overlays a full black screen with adjustable opacity directly in your browser window. It is compatible with Chrome, Firefox, and Edge, requiring no installations or extensions. Since its launch in 2025, it has been widely adopted in coding communities and digital art forums. Trusted by over 50,000 users globally, it provides a minimalist interface and energy-saving benefits for OLED displays. Whether you're working late or simply prefer a dark UI, the Black Screen Tool enhances focus and visual comfort.