Free Professional Tool

Test Your Screen for
Dead Pixels

Professional-grade dead pixel detection, uniformity analysis, and recovery tool with live-resizable pixel fixer. All in your browser.

Understanding Pixel Defects

Dead Pixels

Permanently black pixels that never illuminate due to manufacturing defects.

Stuck Pixels

Pixels locked on red, green, or blue. Often recoverable through rapid color cycling.

Hot Pixels

Pixels brighter than surroundings, visible on dark backgrounds under high temperatures.

⚠️ Safety Instructions

  • Set screen brightness to maximum for accurate detection
  • Photosensitive individuals should consult a doctor before using the pixel fixer
  • Avoid staring directly at the flashing fixer area
  • Test in a dimly lit room for best visibility of defects

Test Colors

Click any color to begin fullscreen testing

Test Patterns

Advanced patterns for thorough inspection

Screen Uniformity Test

Detect backlight bleed, IPS glow, and clouding across 9 zones

Gray Level:

💡 Navigate zones with arrows/WASD. Change gray level with +/- keys.