PowerPhotos is a powerful utility for the Mac that lets you merge or split Photos libraries and eliminate duplicate photos. People use multiple Photos libraries for all sorts of reasons, but one of the most common is to break an enormous library of tens of thousands of photos into smaller more manageable sub-libraries.

PowerPhotos is just the tool you need to manage all of your photos across libraries. From the creator of iPhoto Library Manager, PowerPhotos provides the same sophisticated toolset and more for Apple’s Photos app.

You can store photo libraries on external or networked drives and copy photos while maintaining and preserving albums and related metadata like keywords, titles, dates, locations, and descriptions. Not only can PowerPhotos help by splitting up your Photos library into multiple libraries, it can merge them too. The app also makes it easy to find and eliminate duplicate photos.

One of the most powerful features is the ability to search across multiple libraries at one time. It’s a great feature that allows you to search as though all you photos were in one library even when they aren’t. Finally, PowerPhotos can ease the transition to Photos helping you migrate multiple iPhoto or Aperture libraries to Photos.

We have a special limited-time deal just for MacStories readers. Receive 20% off at checkout by using the coupon code MACSTORIES18. Even if you haven’t had time to set up multiple Photos libraries yet, grab this deal now so you have PowerPhotos’ tools at your disposal when you’re ready take the plunge.

Our thanks to PowerPhotos for sponsoring MacStories this week.