This is exactly what I was looking for!

This application offers what I’ve been looking in when checking my photo library. Instead of just looking looking at the name, filesize, or checksum, this app goes deeper. I have 15 rules setup to determine how files are matched and how they are marked for delition. Granted this application isn’t perfect, but if I can go through >15,000 photos and only have to spend 10 minutes double-checking the work, then hell yes this app is great!

AlmightyOatmeal about PhotoSweeper Lite