The Favorite (star) button will only appear on photos in your own library, allowing you to mark an individual item as a favorite which, in turn, will automatically populate a new photo album with just your favorite photos … Meanwhile, the heart icon is Google Photos’ version of the「like.」This will appear only on those photos that have been shared with you from your family and friends … The features follow a few other changes to Google Photos announced at Google I/O, including more AI-powered photo fixes, and the promise of black-and-white photo colorization soon.