jDiffChaser has been created by our development team working on a collaborative environmental data software for an air traffic control company. The software (in production since 2005) displays a lot of information grouped on many panels viewed by controllers who can have many roles. Such a software emphasizes the importance of chosen fonts, colors and components visual behaviors because each of those graphical information has a business meaning and can be contextual, depending on roles. That's why it is as much important to test the content as to test the visual aspect of what is displayed, in order to avoid what we used to call “visual regression”. We, responsible for this application, decided to create a tool to help doing this checking because we didn't find any existing package to do so as traditional GUI testing tool were not dedicated to such a task.