Duplicate file finder and removal tool.

dipsomaniac

Sounds like you need to get your housekeeping in order. Keep things simple. You only need one cloud backup if you have two onsite backups. 

Belenus

KingL2 said:

Oldie but goodie Antitwin is good for general files (hashcheck) and has a special "compare pixel" feature that will find resized photos (which hashchecks would miss). You can do lotsof things like choose names and hashchecks (or both) as checking critera, use folders, or weighted rules for auto-ticking the boxes that set which one gets deleted, delete things to a hardlink, or a a "pre delete" folder, etc 
 http://www.joerg-rosenthal.com/en/antitwin/

Thanks for that recommendation.

I have about 9,000 photos in 130 folders that I have accumulated over many years.

It found well over 100 duplicates.