This paper presents a tool, for the analysis and regeneration of web contents, implemented through XML and Java. At the moment, the web content delivery from server to clients is carried out without taking into account clients' characteristics. Heterogeneous and diverse characteristics, such as user's preferences, different capacities of the client's devices, different types of access, state of the network and current load on the server, directly affect the behavior of web services. On the other hand, the growing use of multimedia objects in the design of web contents is made without taking into account this diversity and heterogeneity. It affects, even more, the appropriate contents deliver. Thus, the objective of the presented tool is the treatment of web pages taking into account the mentioned heterogeneity and adapting contents in order to improve the performance on the web.