Finding unique photos in two photo libraries

[ozaz]

I have two Mac Photo libraries which have essentially the same content bar a few hundred images. Is there a way to identify the unique images present in one library but not the other? (either using built in tools or a 3rd party app)

The OS 10.11 El Capitan. The overall size of each library is approx 7000 images.

Thanks

 

[Weaselboy]

I have not seen any tools to compare two libraries like that, but you could export from one library, then import into the other so they all in one library, then use a dedupe tolls to weed out the dupes.

I used Photos Duplicate Annihilator for this on my neighbors MacBook and it worked surprisingly well.

 

[ozaz]

I have not seen any tools to compare two libraries like that, but you could export from one library, then import into the other so they all in one library, then use a dedupe tolls to weed out the dupes.

I used Photos Duplicate Annihilator for this on my neighbors MacBook and it worked surprisingly well.

Thanks for the suggestion. Since my post yesterday I've discovered that PhotoSweeper does what I need, and without needing to merge libraries as an initial step.