Pixel Checker - Monitor Test

Easily check your display for dead pixels and screen quality issues. A free, full-screen monitor test tool — select only the tests you need. 【Tests Included】 • Dead Pixels — Spot black dots on a white screen • Solid Colors — Detect off-color pixels in Red, Green, Blue & Black • Uniformity — Check brightness consistency across the screen • Color Gap — Verify inner/outer color contrast accuracy • Gradient — Test smooth color gradation rendering • Sharpness — Check text clarity and contrast inversion 【How to Use】 1. Select the tests you want 2. Tap 'Start Test' → full-screen mode activates automatically 3. Use left/right arrows to navigate between tests 4. Completed tests are marked with a checkmark badge Korean & English supported / Dark & Light theme