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Defpix – Defective (dead) pixels tester

Defective pixels are pixels on a liquid crystal display (LCD) not performing as expected. defpix

There are three different types of defective pixels:

  • Hot pixels (always on).
  • Dead pixels (always off).
  • Stuck pixels (one or more sub-pixels are always on or always off).

Defpix is a free program that can help you with checking for defective pixels on your LCD screen. The program simply shows these colors – red, green, blue, white and black – over the whole surface of the screen. Defpix requires no installation and supports multiple monitor systems.

Here is a close-up of an LCD, showing a dead green.


To learn more about dead  pixels check out this article in wikipedia.

Download Defpix