Dead Pixel Test & Fixer
Check your monitor for defects or try to fix stuck pixels.
Tap or Click to change colors
Press ESC to exit
How to Check for Dead Pixels
This tool helps you detect screen defects by cycling through full-screen solid colors. Follow these steps for the best results:
- Clean your screen: Dust can look exactly like a dead pixel. Wipe your monitor gently before starting.
- Click "Start Test": The tool will enter full-screen mode.
- Scan carefully:
- On the Black screen, look for stuck pixels (red, green, or blue dots).
- On the White screen, look for dead pixels (black dots).
- Cycle Colors: Click your mouse or use the arrow keys to switch background colors.
Dead Pixel vs. Stuck Pixel: What's the difference?
Not all defects are permanent. Knowing the difference can save your monitor:
- Dead Pixel (Black Dot): The transistor is dead. No light comes through. These are usually permanent and cannot be fixed by software.
- Stuck Pixel (Red/Green/Blue): The transistor is "stuck" in the ON position. These can often be fixed by rapidly flashing colors to "unstick" the crystal.
⚡ IS YOUR NEW MONITOR GOOD?
If you just bought a monitor, don't stop at pixels. Check if you are getting the performance you paid for:
- Test Speed: Is it really 144Hz? Use the Refresh Rate Checker.
- Test Clarity: Is the resolution correct? Use the Resolution Detector.
How to use the Pixel Fixer
If you found a colored "Stuck Pixel", click the Launch Pixel Fixer button above. A box with flashing static noise will appear. Drag this box over the stuck pixel and leave it running for 10 to 20 minutes. The rapid color changes can stimulate the liquid crystal to return to normal behavior.