My aperture library is over 30G. I know there are lots of duplicates. Finding duplicates by size/image did not work well but finding by duplicate file name was great. Overall I’m pretty impressed but the gui and options are a bit overwhelming and may take some digging to understand. After loading my library I got the message that 18,000 photos were not found so I have to go investigate that but I suspect it’s because the drive is offline for now. We’ll see when we I get the drive mounted.
dbajohn about PhotoSweeper Lite