Dropbox is a widely used cloud-based storage system that can store and protect personal media like photos and videos. Being cloud-based, Dropbox stores your personal media on their “cloud” servers to make them available on your personal devices. Dropbox is an acceptable solution for accessing files, but it falls short as a photo library management system. You can easily upload photos and videos to Dropbox from Mac OS X. First, you need to install the Dropbox Desktop Application on your Mac OS X. Once the installation is done, it creates a 'Dropbox' folder inside your home folder. The Dropbox folder works like any other folder on your Mac computer.
Did you move the actual Photos library, or did you move the individual photos? Neither is likely to do what you want, but the recovery will be different. Either way, you will need to put your library/pictures back into the normal file system, then look for another solution to your space shortage.
Dropbox Sync Mac Photos
Yes you can, for backup purposes, you can use any cloud storage, flickr, box, dropbox, etc. Just copy the files to dropbox from the original source, ie your mac. The version of the photos in iCloud may not the the original sizes photos. I don't store any photos in iCloud, other than my photo stream. Dropbox will stop uploading photos automatically from your iPhone or iPad. How to Disable Dropbox Automatic Camera Uploads on Mac. When you connect your iPhone or iPad to your Mac (with a Dropbox desktop app installed), a pop-up may ask if you wish to enable camera uploads for that device.
If you really moved the whole Photos library, you may have done irreparable damage to it and should restore it from your backup (ideally a Time Machine backup).
If you only moved the pictures from the Photos library to Dropbox, you'll have to move the back into the Photos library before you can access them from the Photos app.
Dropbox Mac Photos Library
Aug 23, 2018 8:49 PM