This is just what I wanted for a long time, amazing to randomly come across it because I'd already given up thinking it doesn't exist.

The only feature it's missing - but I know this would be complicated and advanced - would be to scan for similar images and duplicates that don't exactly match. Ideally it would present them all and then I could manually mark for deletion what I want to get rid of.

So many duplicates. We were all so naive when digital photography first became a thing. I remember back in the day everyone recommended "keep all files, delete nothing, storage is cheap".