Image diffing using CSSSince the last post on CSS was popular here is another simple CSS trick that I found useful in the past. Let’s say we want to find the difference between these two images: You can do this by simply inverting the colors and then stacking them together at 50% opacity. This can be achieved with a single CSS filter: -webkit-filter: invert(100%) opacity(50%); What you should get back is a gray image ex
