SCREEN 📌 Quick Summary: A monitor dead pixel test displays solid colors on your screen to reveal defective pixels. Our free online tool works on all monitor types — LCD, LED, OLED, 4K, and 144Hz — and runs in your browser in under 60 seconds.
Monitor Dead Pixel Test — Free & Online
Looking for a reliable monitor dead pixel test? Our tool is designed specifically for desktop monitors. Whether you have a standard 1080p LCD, a high-end 4K OLED, or a 240Hz gaming monitor, this test will help you identify dead, stuck, or malfunctioning pixels.
How to Test Your Monitor for Dead Pixels
- Clean your monitor — Dust and smudges can mimic dead pixels.
- Set your monitor to its native resolution — This ensures accurate testing.
- Click "Start Full Diagnosis" — The test runs in fullscreen mode.
- Inspect each color — White, black, red, green, and blue.
- Document any defects — Take photos for warranty claims.
Which Monitor Types Can Be Tested?
- LCD monitors — Standard office and gaming monitors
- LED monitors — Modern backlit displays
- OLED monitors — Premium displays with perfect blacks
- 4K monitors — High-resolution displays
- 144Hz+ monitors — High refresh rate gaming monitors
- Ultrawide monitors — 21:9 and 32:9 aspect ratios
Why Test Your Monitor for Dead Pixels?
Most manufacturers follow the ISO 13406-2 standard and won't replace a monitor for just 1-2 dead pixels. That's why it's crucial to test your monitor within the return window — whether you just bought a new one or you're buying a used monitor.
Dead Pixel vs Stuck Pixel on Monitors
Dead pixels appear as black dots that never light up. Stuck pixels stay on one color (red, green, blue, or white). Our monitor test helps you identify both types.
Learn more: Dead Pixel vs Stuck Pixel: What's the Difference?