A plain white screen to use as a light, check your monitor or run tests. Adjust the brightness and go full screen.
When time is up, full screen closes on its own.
Put a white or warm screen in front of you and turn up the brightness. It lights your face softly, like a ring light.
Black shows dust, white shows smudges. Use both and nothing gets missed.
Cycle through red, green, blue, white and black. A dot that doesn't change color is a dead or stuck pixel.
A soft color at low brightness works as a night light or for reading without turning on a lamp.
Press the Full screen button. White fills the whole display. To exit, tap the screen or press Esc.
Yes. Put it at full brightness in front of your face on a second monitor or tablet. It gives soft, even light.
At high brightness, yes. On OLED screens white uses more power than black. Lower the brightness if you don't need that much light.