Q: How to merge multiple iPhoto libraries into one PhotosLibrary

Use the iPhoto Library Manager to merge them, and import the merged library into Photos.

(127624)

Stephen 1964 wrote:

 

I have multiple iPhoto libraries and did this to make managing a very large number of photos more convenient. I have tens of thousands of photos.  I'm considering having only one or a very few Photos Libraries especially if I want to use iCloud for them.

 

Is their a relatively easy way to merge iPhoto Libraries into a single Photos Library?

 

Thanks for any help you can provide.

Photos also allows for multiple libraries -- in that case the designated system library is the only one synchronized with the ICLOUD -- and if you have not seen other posts tens of thousands of pictures will take a very long time to upload - as upload speeds are no-way as fast as download.

photo getting started

https://support.apple.com/en-us/HT204655

https://support.apple.com/en-us/HT204410

https://support.apple.com/en-us/HT204264

https://support.apple.com/en-us/HT204414