How to let Windows 11 Change Brightness Automatically based on Content
You can make Windows 11 automatically adjust your screen brightness based on what’s on display. This can improve your viewing experience and save battery life.
This feature is called Content Adaptive Brightness Control, or CABC for short. It dynamically alters brightness levels by analyzing the visual elements on your screen. For instance, it will dim the display during dark scenes in a video and brighten it for lighter content.
You’ll typically find CABC available on devices with HDR (High Dynamic Range) displays, though its availability can vary. Turning on this setting in Windows 11 is quick and can significantly enhance your comfort when viewing different types of media.
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 is quick. You have a few choices for how it works. 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 can automatically adjust your screen’s brightness and contrast based on what you’re viewing, a feature called Content Adaptive Brightness.
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 changes your screen’s brightness and contrast depending 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 via Settings, press ⊞ Win+I to open Settings, then go to System > Display > Brightness & Color. Look for the options Change brightness automatically when lighting changes and Help improve battery by optimizing screen brightness, and turn both off.
Is adaptive brightness good for your eyes?
Auto-brightness on monitors can improve eye comfort by matching room lighting. However, it can be bad when it changes too often or disrupts gaming and color-critical work.
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About the Author
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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