Simple dead pixel tester for finding the defective pixel on your screen.
The dead pixel tester helps you to find any dead pixel (or defective pixel) on your screen whether this is the screen of your mobile, tablet, or computer.
The dead pixel or defective pixel is the pixel on the screen that doesn't perform as expected. This unexpected behavior can be that the pixel produces the dark dot or bright dot instead of the expected color. For example, the pixel has to produce the red color, but it produces the black color instead.
If you would like to learn more about the dead pixel, you can check it out from wikipedia.org.