I have a relatively large photo library (30 GB) stored in Photos.app, stored as one big 'Photo Library'. It is setup to sync to iCloud. I have taken some pictures on my iPhone, which is also synced to iCloud.
I want to upload a few specific photos into Google Drive. It seems there are a couple different ways I could do this. I could either access the actual photo file within the 'Photo Library' (perhaps by following this guide) and upload it directly. Alternatively, it seems that I can upload the entire photo library and then select specific images (as explained here) but that process was slow because my library is large.
What is the best way to upload a few of my specific photos stored in iCloud, accessible via Photo, to Google Drive?
An ideal solution for me would be to right click on the photo (or a group of photos) and 'share' to Drive, or something of the like.