I have an old SD card full of old photos.
(I've actually copied the card to a folder on my laptop)
Upload all 800 pictures to Google Photos in "one shot". (i.e. All 800 at once. Not one a time, nor 10 at a time).
Tried so far
- I've uploaded the 800 photos to Google Drive using the "Google Drive" Windows app
I don't see an easy way (today, in 2022) to import those photos en masse from "Google Drive".
Back in the Day
IIRC I'm pretty sure the old Picasa could handle this problem, ie. "Import this directory on my computer"