How to let Windows 11 Change Brightness Automatically based on Content
Windows 11 automatically changes your screen brightness based on the content you’re viewing.
This feature, called Content Adaptive Brightness Control (CABC), analyzes what’s on your screen and adjusts the brightness accordingly. For example, it dims the screen during dark movie scenes and brightens it for lighter content.
CABC helps make your viewing experience better and can save battery, especially on laptops. It’s often found on devices with HDR displays, which show more colors and contrast.
Windows 11 lets you automatically adjust screen brightness based on content by going to Settings > System > Display. Under Brightness, select your preference from the “Change brightness based on content” drop-down menu.
What is Content Adaptive Brightness?
Content adaptive brightness in Windows 11 is a smart feature that adjusts your screen’s brightness and contrast based on what’s on the display, much like how your eyes adjust to different lighting.
How to Turn On and Change Content Adaptive Brightness
Setting this up takes only a moment. There are a few options for how this feature operates. You’ll find all these settings in your Windows 11 Display settings.
Open Display Settings
To change your Windows 11 display settings, the easiest way is to right-click on your desktop and pick ‘Display settings’ from the menu that pops up.

Find Brightness Settings
Once you’re in Display settings, scroll down a bit. Look for the Brightness section. This is where you control your screen’s brightness.
Enable Content Adaptive Brightness
Windows 11’s Content Adaptive Brightness feature automatically adjusts your screen’s brightness and contrast based on the content displayed. This helps make your picture look better and can save battery life. It can be turned on or off, or set to adjust based on your content.
Click this drop-down menu to see your choices:
- Off: This is the default if the feature is not turned on. Your screen brightness and contrast will not change based on what’s on the screen. You have full control, but you won’t get the battery saving or better viewing for different scenes. Your battery will also likely run out faster.
- Always: When you choose ‘Always’, content adaptive brightness will be on all the time. This works whether your device is plugged in or running on battery. This gives you the best experience for brightness and contrast for everything you do.
- On Battery Only: This is a good choice for laptop users. When you choose this, adaptive brightness will only work when your device is running on battery power. This helps save battery when you are out and about. When you are plugged in, you will still have normal brightness control.

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Summary
Content adaptive brightness in Windows 11 automatically adjusts your screen’s brightness and contrast based on what you’re viewing, helping save battery and improve your viewing experience.
How do I turn off content adaptive brightness control in 🪟 Windows 11?
To disable adaptive brightness through Settings, press ⊞ Win+I to open Settings, then navigate to System > Display > Brightness & Color. Locate the options ‘Change brightness automatically when lighting changes’ and ‘Help improve battery by optimizing screen brightness,’ and disable both.
Is adaptive brightness good for your eyes?
Auto-brightness on monitors can enhance eye comfort by adapting to room lighting. However, it can be detrimental when it changes too frequently or interferes with gaming and color-critical work.
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Richard
Tech Writer, IT Professional
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
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