SCREEN 📌 Quick Summary: A monitor diagnostic is a comprehensive evaluation of your display's health. Our free online tool checks for dead pixels, ghosting, burn-in, uniformity issues, and refresh rate accuracy in under 60 seconds.
Monitor Diagnostic — Free & Online
Our monitor diagnostic tool is designed to give you a complete picture of your display's health. It's like a checkup for your monitor — quick, thorough, and free.
What Our Diagnostic 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, dirty screen effect
- Refresh rate verification — Confirms your monitor runs at the correct Hz
- OLED burn-in scan — Exposes ghost images and permanent burn-in marks
How to Run a Monitor Diagnostic
- Clean your screen — Remove dust and fingerprints.
- Set your monitor to native resolution — For accurate results.
- Click "Start Full Diagnosis" — The test runs in fullscreen mode.
- Follow the on-screen instructions — Advance with Space or click.
- Review your score — Get a diagnostic score out of 100.
Why Run a Monitor Diagnostic?
- Early detection — Catch problems before they get worse
- Warranty claims — Document defects with evidence
- Buying decisions — Test used monitors before purchase
- Peace of mind — Know your display is in good health
When to Run a Diagnostic
- After buying a new monitor
- Before buying a used monitor
- If you notice a black dot on your screen
- If you see motion blur while gaming
- Periodically as a preventive measure