CheckPixels.com

Fast dead pixel detection for LCD testing

Click the link below, you will be shown a specially colored page. If you have dead pixels of that color, you will notice them as black dots. There are seven modes: two for testing red subpixels, two for testing green subpixels and two are for testing blue subpixels. Remaining is black screen test which allows to find glowing pixels of any color.

It will be better to open your browser in full screen mode to cover as much space as possible.

In test mode, you will see nothing but colored space. Click anywhere to switch to next mode. Switching will go in loop. To finish testing, just hold your mouse pointer somewhere in center of a window and a menu with closing button will appear.