A web server (1) responds to a request message from a remote user device (2) by dynamically generating web page code capable of being interpreted by the user device. A device type identifier (45) is extracted from the request message and is input to a code generating engine (21) which interprets stored instructions for generating the web page code with reference to selected device dependent information corresponding to the device type identifier. The web page information is stored as a content document comprising a set of instructions written in a script language. The web server generates web pages in an appropriate form for each user device without the need to convert web pages from one form to another.