We developed a transcoder gateway that transforms web pages on the fly. The transcoder adapts the pages to the limitation of the user's device, especially the small screen of PDAs and smart phones. We developed novel template-matching algorithms to detect the structure of a webpage and to match the structure with a known template in the template library. Transformation rules such as summarization can then be applied to the template to make reading full-text documents in small screen devices more usable. Our current project focuses on transcoding full-text biomedical information resources (such as full-text biomedical journals) to support mobile healthcare professionals.