PowerPhotos also makes it easy to track down duplicate images and can even merge libraries together.
You can store photo libraries on external or networked drives and copy photos while maintaining and preserving albums, edits, and related metadata like keywords, titles, dates, locations, and descriptions. PowerPhotos allows you to create and manage multiple libraries, so you can break up your massive library into multiple manageable libraries. As technology marches forward, digital cameras produce larger and larger image files, which makes it easy to create huge, unmanageable Photos libraries of tens of thousands of images that quickly fill valuable storage space on your Mac.
PowerPhotos is the perfect Mac utility to help you manage multiple photo libraries.