About White Screen

A free, browser-based toolkit for testing and cleaning LCD, OLED, and LED displays

Our Mission

White Screen was built to give anyone — from casual users to display technicians — a fast, no-install way to check a screen for dust, dead pixels, stuck pixels, and backlight issues. Every test runs entirely in your browser: nothing is uploaded, installed, or tracked.

What We Offer

🎨 Full-color diagnostic screens

White, black, red, green, blue, yellow, pink, and light blue — each in fullscreen, one click away.

🔍 A dedicated dead pixel test

Cycle through colors automatically to spot dead, stuck, or warm pixels in seconds.

🧼 A cleaning companion

Use any solid color as a bright, even backdrop to spot dust and smudges while you clean.

Get in Touch

Questions, feedback, or a bug to report? Visit our Contact page — we read every message.