White Screen Online | Dead Pixel Test & Clean Ch

About this app

"I've bought a new PC, but I'm worried about dead pixels." "My screen is dirty, but it's hard to see the grime on a dark background..." In situations like these, "Screen White Check" is here to help. With just one click, you can turn your entire screen solid white to inspect its condition in detail.

Key Uses for This Tool

Checking for Dead Pixels & Screen Uniformity Easily spot stuck or dead pixels that stay lit. A solid white background makes it much easier to detect slight color inconsistencies or hardware defects.

Screen Cleaning & Smudge Detection Fingerprints, dust, and oily smudges that are invisible on a standard screen will stand out clearly against a white background. It's perfect for a final check after cleaning.

Portable Lighting & Reflector When taking product photos, you can use your phone or tablet as a mini softbox or reflector. By displaying a white screen and bringing it close to the subject, you can effectively soften or eliminate shadows.

Tracing (Light Box Substitute) By turning your tablet’s brightness to maximum on a white screen, you can place a piece of paper over it and use it as a makeshift light box for tracing drawings.

Easy 3-Step Guide

Click the "START" Button Press the center button to enter full-screen mode and switch the display to solid white.

Inspect Your Screen Check every corner of the display. Tip: Increasing your screen brightness will make the inspection even more effective.

Click or Press "ESC" to Exit Once you’re finished, simply click anywhere on the screen or press the ESC key to return to the original page.