Abstract: A method and system for editing arbitrary XML formatted web content within a graphical user interface (GUI), where user-edited XML is converted according to the rules of a XSL style sheet using a XSLT Processor into a mark-up document specific to the browser software running on a client side operating system. Since XML is not very human friendly readable or editable, the XML based web content needs to be converted in a web-mark-up that is better readable and therefore modifiable. The editing process takes place within the browser that displays the rendered XML content.