devtools-diff is a free Chrome add-on developed by mtn. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools. This program allows users to easily compare the styles applied to any pair of DOM elements.

Gone are the days of scrolling through the style inspector in an attempt to identify the differences between two elements. With devtools-diff, this process is automated. The tool automatically generates a visual diff of the styles between the last two "inspected" elements. All you have to do is click on the two elements in the inspector view, as shown in the provided screenshot.