iPhoto Library Manager is only provided for older Macs that are still running iPhoto instead of Apple’s newer Photos app. If you need to work with Photos libraries, or migrate your iPhoto libraries to Photos, use PowerPhotos instead.
iPhoto Library Manager allows you to organize your photos among multiple iPhoto libraries, rather than having to store all of your photos in one giant library. You can browse the photos in all your libraries directly from iPhoto Library Manager, without having to open each library in iPhoto just to see its photos, and search across all your libraries to help track down a particular photo.
iPLM also gives you the ability to copy your photos from one library to another, while keeping track of photo metadata that is normally lost when exporting from one library and importing into another. Titles, dates, descriptions, keywords, ratings, faces, and place information are all transferred along with the photos, ensuring that you keep all that information you spent hours entering into iPhoto. Event and albums are also reconstructed when copied, and both the edited and original copies of each photo are copied as well. You can split up a large library into multiple smaller libraries, merge entire libraries together into a big one, or rebuild a corrupt library that is causing iPhoto to hang or crash.
Since it can be easy to lose track of what photos are stored in which library, iPhoto Library Manager can analyze your libraries for duplicate photos, showing them to you side by side and letting you get rid of extra copies of photos that you no longer need. This duplicate analysis is also used when merging libraries and copying photos, to help prevent importing multiple copies of a photo into a library in the first place.
Create and manage multiple libraries
iPhoto Library Manager lets you create multiple iPhoto libraries, instead of having to keep all your photos in a single iPhoto library. This lets you speed up iPhoto by having smaller libraries, archive old photos that you don’t use much, or organize photos in different categories or projects. The possibilities are endless!
Browse and search
Use iPhoto Library Manager’s photos browser to quickly view your photos without having to open iPhoto itself. You can also search for photos in a single library, or across all your libraries at once.
Copy photos and their metadata
If you have an existing library you want to split up into smaller libraries, you can copy photos by drag and drop from one library to another. iPhoto Library Manager will take care of retaining all the photos’ metadata, such as keywords, ratings, faces, and so forth.
Find duplicate photos
It can be easy to have multiple copies of the same photo creep into your iPhoto libraries. iPhoto Library Manager lets you search for duplicates in one or more libraries, view them side by side, and take actions on them, such as moving duplicates to the trash, tagging them with keywords, and more.
Merge iPhoto libraries
Got a whole bunch of libraries you want to consolidate into one? iPhoto Library Manager lets you merge libraries 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.
Rebuild corrupted libraries
Sometimes, an iPhoto library will become corrupted, with missing photos, mysterious iPhoto hangs, or outright crashes. With iPhoto Library Manager, you can rebuild a new library based on your current library, starting with a fresh database free of corruption. You can even scavenge photos from the library that iPhoto may have lost track of.