Over the weekend, I managed to totally trash one of my Mac OS X hard drives. Fortunately, with the help of some Data Recovery software, I managed to recover pretty much all of my data. However, with this gold mine, came 38,000 JPGs alone. I'm going through them at the minute with Finder, organised them by size and got rid of a few thousand. What would be really good, is if there was a tool to recognise which photos are identical (in terms of the picture itself) and only keep the largest file size? I was thinking about importing them into iPhoto but thought it may throw a hissy fit (given it's so many pictures) and mess up my library in the process? On top of that, I don't want it writing a bunch of other image variants for it's own optimisation processes.