You can see it in Fork's screenshot: https://git-fork.com/images/diffViewer.jpg
But if you look at Guitar's, you'll see the lack of word diffing, and that makes it take significantly longer to see exactly what changed: https://camo.githubusercontent.com/3c6c338ece93afda723cef575...
[0] https://github.com/soramimi/Guitar/issues/76