[Feature request] Compare images by pixel instead of byte

[SerkanB]

Hi there!

This piece of software is great. Make syncing stuff around a lot easier.
Sometimes I even use it to find duplicates. Before I found FreeFileSync I was using Anti-Twin, but that ignored the directories… which doesn't help my case.

But what Anti-Twin does, what I am missing in FFS, is the pixel-comparison of images. Checking if the images are the same, even though the file might differ.
That happens if you add some new tags to the image, or probably just resave it with a different software.

I know FFS is for syncing, not finding duplicates… but it would be a great feature, and it somewhat fits into the goal of this, right? :D

[markusoft]

badpeggy23_windows
SMF_v12.exe
RapidCRC

[xCSxXenon]

I would disagree with that. The goal of the program is to sync a source and destination, not deduplication. There are many tools with pre-tested algorithms for that