Dead Pixel Tester
Use this tool to find defective pixels on your display:
- Dead Pixels: Always remain black and don't respond to image content
- Stuck Pixels: Always display the same color (usually red, green, or blue)
- Hot Pixels: Appear as bright, often white spots
Instructions
1. Set your screen to full brightness
2. Press "Cycle Colors" for automatic color changes or select a specific color
3. Look for pixels on the screen that don't match the selected test color
4. Press F11 for fullscreen mode or click "Fullscreen"
Test Settings
Colors
Options
Additional Information
What to do with defective pixels?
If you find dead or stuck pixels:
- Check the warranty conditions of your monitor/display
- Many manufacturers replace devices when a certain number of defective pixels is exceeded
- For laptops and built-in displays, contact the device manufacturer
Repair Options
For stuck (not dead) pixels, you can try the following:
- Gentle pressure: Carefully press the affected pixel area with a soft cloth
- Pixel massage programs: Special software that displays rapidly changing colors to "reactivate" defective pixels
- JScreenFix: A web-based tool that displays flickering patterns and can sometimes repair stuck pixels
Note: All manual pixel repair methods can damage the display if used improperly. Proceed with caution and try these methods at your own risk.
Professional Online Dead Pixel Test Tool
Detect dead and stuck pixels on your monitor or display with our comprehensive online dead pixel test platform. This advanced display testing tool provides professional-grade pixel analysis directly in your web browser, supporting all display types including LCD monitors, OLED screens, laptop displays, smartphones, and tablets for thorough dead pixel detection.
Our complete online dead pixel test offers extensive display testing capabilities:
- Full-spectrum color testing with 8 primary test colors
- Multiple test patterns including solid colors, grids, and checkerboards
- Automatic color cycling with adjustable speed settings
- Fullscreen testing mode for comprehensive pixel analysis
- Detection of dead pixels, stuck pixels, and hot pixels
- Professional-grade testing suitable for quality control and warranty claims
Perfect for display manufacturers, quality assurance teams, electronics retailers, repair technicians, and consumers purchasing new displays, this online dead pixel test helps identify pixel defects that could affect display quality and usability. The tool works seamlessly across all devices and browsers without requiring any software installation.
Whether you're testing a new monitor purchase, performing quality control on display products, troubleshooting screen issues, or preparing warranty claims, our online dead pixel test provides accurate, reliable results for professional display testing. Ensure your displays meet quality standards and identify pixel defects before they become problematic for critical applications, gaming, or professional work.