I recently noticed that my Photos is taking a large amount of storage space on my hard drive. I enabled iCloud Photos, and the upload looks to be complete, but the size of the library has not decreased.
This library initially appeared on my Mac when I imported photos from my phone using a lighting cable as a way to back them up. The iCloud sync doesn't seem to have created duplicates, so I think it was able to detect that these are the same photos, but it's still taking a lot of space on my drive.
Is this expected? If not, what can I do to troubleshoot this?
In my preferences, Photos is set to "Optimize Mac storage".