The reviews and opinions below are posted by SnapFiles visitors. They do not necessarily reflect our opinion, and they are solely based upon the experience of individual users.
This is everyone's favourite duplicate image finder and it is spot on, fast and never crashes even when you throw thousands and thousands of images at it. You can also save the search and return to it if you wish to go through things manually. Use the slider to determine how similar you want the pictures to be (I choose exact, at the top). Then choose next rejection criteria which I choose lower resolution. Let it run, then it will auto select. I am super careful about old duplicates and chuck them all on an old hard drive that is just for duplicates. You never know. Stick the drive back in the drawer and forget about it and return to your PC with (if you're like me) Gbs of space saved. You can also choose to delete by least favourite folder for instance. Take 5 minutes and you will never use anything else to search for image duplicates. If only I could find something as reliable for other file formats.