System Requirements:
- macOS Catalina or Big Sur
- An Intel or Apple Silicon Mac
Duplicate Photo Finder (DPF) is a swift and easy tool built to help you find and safely delete duplicate and similar photos on your Mac. It works with Photos library, as well as with Local and Remote storages. Features:. Apple Photos Press the Scan Library button and DPF will find duplicates or very similar photos in your Photos library. Merge Multiple Libraries. There’s no tool in iPhoto or Photos for merging libraries, but you can use iPhoto Library Manager to merge multiple libraries. To begin a merge, just go to File Merge Libraries. There are four main parts to setting up your merge. Choose all the libraries you want to merge from the left column. In the dialog, select iCloud Photos. Now, starting with the smallest Photos library and working up in size, follow these steps for each library you want to merge: Double-click the Photos library to open it. In Photos Preferences General, click Use as System Photo Library.
PowerPhotos vs. iPhoto Library ManagerRegistration FAQ
Documentation
How To Merge Two Photo Libraries In Mac Shortcut
Downloads for old macOS versions
(Mojave and earlier)The ultimate toolbox for Photos on your Mac
PowerPhotos works with the built-in Photos app on your Mac, providing an array of tools to help you get your photo collection in order.
Create and manage multiple libraries
Instead of being limited to putting all your photos in a single library, PowerPhotos can work with multiple Photos libraries, giving you many more options for how to organize your ever growing photo collection.
Splitting your photos between multiple libraries helps Photos open more quickly, lets you archive older photos, store some of your collection on an external hard drive, and reduce storage space used by iCloud Photo Library.
Copy photos and their metadata
You can split your library by copying albums and photos with a simple drag and drop. PowerPhotos will take care of copying the photos and retaining their metadata, including keywords, descriptions, titles, dates, and favorite status. Read more about what PowerPhotos can copy.
Merge Photos libraries
Got a whole bunch of libraries you want to consolidate into one? PowerPhotos lets you merge your libraries together while weeding out duplicate photos in the process. You will be shown a preview of what your merged library will look like before any modifications are done, to ensure your merged library looks how you want.
Find duplicate photos
It's easy to have multiple copies of the same photo creep into your photo collection over time. Use PowerPhotos to find duplicate photos in one or more libraries, view them side by side, and separate them into albums where you can easily delete them from your library.
Browse and search
Use PowerPhotos' image browser to quickly view your photos without having to open Photos itself. View detailed photo information using List View, and search for photos across all your libraries at once.
Migrate your iPhoto/Aperture libraries
If you have a lot of existing iPhoto or Aperture libraries that you want to migrate over to Photos, PowerPhotos will help automate your migrations so you don't have to spend time babysitting this lengthy process.
Links and reviews
How To Merge Two Photo Libraries On Mac
'PowerPhotos is an extremely useful addition as an enhancement for any Photos user trying to perform tasksthat fall outside of Photos restricted purview.' – Macworld
Video tutorial: Remove duplicate photos in Photos for Mac – Tech Talk America
'PowerPhotos was just what I needed… Two features make it a must-have: merging multiple Photos libraries into one, and finding duplicate photos' – Bob LeVitus, MacObserver