If you use a Windows 11 laptop or tablet, you might notice that your screen brightness constantly fluctuates even when you are indoors in a perfectly lit room. It gets darker when you open a dark web page (like Spotify or a terminal), and it suddenly gets blindingly bright when you open a white word document.
This is caused by a feature called Content Adaptive Brightness Control (CABC). Unlike standard auto-brightness (which uses an ambient light sensor to adjust to the room), CABC constantly analyzes the actual pixels on your screen to save battery life. While well-intentioned, this constant flickering can cause severe eye strain and ruin color accuracy for photo editors. You can disable this feature to lock your brightness in place.
How to Turn Off Content Adaptive Brightness in Windows 11
You can adjust the CABC settings directly from the Windows Display preferences.
- Click the Start button and select the Settings gear icon (or press Windows Key + I).
- In the left-hand navigation pane, click on System.
- In the main window on the right, click on Display.
- Under the “Brightness & color” section, click anywhere on the Brightness slider bar to expand a hidden drop-down menu.
- You will see a setting labelled Change brightness based on content.
- Click the drop-down menu next to this setting.
- Change the selection from “Always” or “On Battery Only” to Off.
Once disabled, your screen brightness will remain exactly where you set it manually using the slider or your keyboard keys. The display will no longer randomly dim when reading dark text or blast your eyes with light when switching to a white background.