Firediff - In Case of Stairs. Firediff is a Firebug extension that tracks changes to a pages DOM and CSS.
Change Tracking Change Tracking Screenshot Firediff implements a change monitor that records all of the changes made by firebug and the application itself to CSS and the DOM. This provides insight into the functionality of the application as well as provide a record of the changes that were required to debug and tweak the page’s display.