How do I store photos only on my iCloud and remove them from my iMac hard drive.
How do I store photos only on my iCloud and remove them from my iMac hard drive?
MacBook Air 13″, macOS 10.14
You don't. The iCloud Photo Library is a sharing service. If you remove images from your HD they will, in turn, also be removed from the Cloud..
If space is an issue you can store masters in the Cloud or move your library to an external HD.