Internet information providers need to continually analyse and update their offerings in order to survive in to-day's marketplace. As web sites and their information con-tent grow larger, this becomes a more and more difficult task. Software-Engineers have had to deal with the problem of understanding and maintaining complex and interconnected documents (in the form of program source code) for a long time, and a number of tools exist to support them in this task. This paper describes commonalities in the maintenance of software systems and web sites and presents a case study in the application of a Software-Reengineering tool for web site analysis.