To make it easier for other apps to easily access all the photos and videos that you want to share, it would be better if you designate a System Photo Library. And if it’s not, then the first photo library that you create will automatically become the System Photo Library.

Now, if you think that you have only one photo library, then it's your default System Photo Library. Only then will you be able to select them in System Preferences. What’s System Photo LibraryĮven when you want to set your image as your screensaver or desktop picture, the photo needs to be in your System Photo Library. Moreover, it allows you to sync photos on IOS devices and view all your precious collections on Apple TV.

With the assistance of this incredible tool, you can easily access various Mac applications, including iMovie, Pages, Keynote, and more. It’s a useful library application feature of the Mac computers that can be used with iCloud Photos, My Photo Stream, and Shared Albums. If you are a MacBook user, you might be familiar with the term System Photo Library.