How to merge two photos libraries

iCloud Photo Library is the only way to nearly merge libraries (you lose projects) -- Notes on Merging Photos Libraries -- PowerPhotos is not a complete sync - you lose the edit history and have to choose a single version of the photos to merge

LN

I wish to combine two libraries into one and I don't see any recent answers using

the latest OS

Photos does not have a tool to merge libraries directly on your Mac like Aperture has. iCloud Photo Library is the best option, if you are willing to sign up for enough storage temporarily to upload both libraries to iCloud.

SO I will just live with them separate till something efficient comes along.

That is a very good plan.

You could export just your favorites from the smaller library (with File > Export > Export unmodified original) and import them into the library you want to use in future.

Gee there are many including one active today

merging options and considerations are describedhere

LN

Download and use PowerPhotos, or if you have enough iCloud storage space, set each as the System Photo Library, upload it, and download the merged library.

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