SCREEN 📌 Quick Summary: Our free online monitor test runs 5 comprehensive checks in under 60 seconds: dead pixel detection, ghosting test, uniformity check, refresh rate verification, and OLED burn-in scan. No downloads, no signups, 100% private.
Free Online Monitor Test
Whether you just bought a new monitor, you're troubleshooting a display issue, or you're buying a used monitor, our free online monitor test will help you identify problems quickly and easily.
Our tool runs entirely in your browser — no downloads, no signups, no data collection. Everything stays on your device.
What Our Monitor Test Checks
- Dead Pixel Detection — Identifies stuck, dead, or malfunctioning pixels
- Ghosting Test — Reveals motion blur and pixel response issues
- Uniformity Check — Detects clouding, backlight bleed, and dirty screen effect
- Refresh Rate Verdict — Confirms your monitor is running at the correct Hz
- OLED Burn-In Scan — Exposes ghost images and permanent burn-in marks
How to Test Your Monitor
- Clean your screen — Remove dust and fingerprints.
- Set your monitor to native resolution — For accurate testing.
- Click "Start Full Diagnosis" — The test runs in fullscreen mode.
- Follow the on-screen instructions — Advance with Space or click.
- Review your results — Get a score out of 100.
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?
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.