If not, you can switch which image in a set you want to be the “keeper,” or discard the match entirely, among other options. Once the pass is complete, you can review pairs or multiples of images and make sure your matches are correct. PowerPhotos allows you to merge photo libraries without losing important metadata, such as Albums, Moments, and Events. (Merge Libraries uses these criteria, but also adds an option to remove duplicates while merging, and to use additional metadata criteria to sort out which image should be kept in the merge operation.)Įven with my huge library and using exact matches, it only took about 20 minutes on a 2014 Mac mini while I continued to work on tasks in other apps. The instructions below assume you’re merging an alternate Photos library, but you can also merge iPhoto and Aperture libraries, just substitute the appropriate library locations. Or, you can opt for filename and date, which includes minor variations in filenames commonly used with duplicates. Comparisons can be based on the content of an image (Exact Match), which looks for byte-for-byte identical versions of either the original image or any modified version you’ve stored. With larger and cheaper hard drives now plentiful (for backups), I decided I wanted to merge all of my photos from the three libraries back into a single Photos library. That way I’d only need to look in one place for any of my 62,000 photos and 3,000 videos. The app gives you several choices for deciding how to let it identify duplicates (whether in Find Duplicates or Merge Libraries), including excluding hidden photos, images marked with “duplicate” in the keyword field, and photos that it’s already placed in a special album. The bad news was, as I mentioned, Photos restricts you to a single library at a time. An image deemed to be a duplicate that should be discarded can be swapped to be the one kept, among other operations.
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