Full Red Screen

Generate media helpers and process text locally.

About Full Red Screen

Click "Go full screen" to fill the screen with solid red (#FF0000); Esc or a click brings you back. A full red frame makes it easy to test the red subpixels of an LCD or OLED panel for dead or stuck pixels, and a dim red screen is a common night-vision-friendly light for stargazing. Pick a different colour with the colour input if you need another test pattern.