Surface screen settings: content adaptive brightness and Night light

Updated 2026-11-02

Quick answerSurface devices adjust brightness and contrast based on what's on screen, so a page that suddenly turns white can get brighter. Microsoft explains how to turn off this content adaptive brightness in Settings, System, Display. Add Night light and dark mode there too to keep the screen steady and dim.

Turn off content adaptive brightness

  1. Open Settings > System > Display.
  2. Open Brightness and turn off content adaptive brightness control.

Night light and dark mode

  1. Settings > System > Display > Night light.
  2. Settings > Personalization > Colors > Choose your mode > Dark.

Good to know

  • Microsoft notes brightness can rise abruptly with content adaptive brightness on.

FAQ

Why does my Surface screen brightness change by itself?

Content adaptive brightness adjusts brightness and contrast to what's displayed.

Is it safe to turn off?

Yes. It only affects power savings and battery life.

Sources

  • Microsoft Support: Adaptive brightness and contrast on Surface devices. Link
  • Microsoft Windows Learning Center: Tips to reduce eyestrain while using your computer. Link

Not a medical device and not medical advice. Migraine Mode is a screen-comfort tool: it does not diagnose, treat, cure or prevent migraine or any other condition, and it does not replace a doctor. Its settings are based on studies of light, colour, flicker, patterns and motion; the extension itself has not been clinically tested. When to see a doctor.