Content adaptation is a crucial step in making desktop-oriented web resources available to mobile, small device users. In this paper, we propose a decision engine comprising a content analysis module and a negotiation module to serve as the core of a content adaptation architecture. The content analysis module parses a structured web document originally intended for the desktop into small sections and transforms the document into a form that is best suited for rendering in a constrained mobile device. The transformation also provides the user with the best content value in an adapted web page while preserving content integrity. With the transformed document, the negotiation module selects the best rendering parameters to be used in the synthesis of an optimal adapted version of the content. The decisions made are based on the user?s preference and QoS considerations. We have built a prototype to demonstrate the viability of our approach.