The invention relates to a method for retrieving a web document provided by a web server, where the method comprising the usual steps of requesting a web document from the web server and replying withthe web document, extended by the steps of requesting an analysis according to an inspection requirement, analyzing the content of the web document according to inspection requirements at the web server, and replying an analyzing result. The invention relates inter alia to a web document description language, a web server, a web document transfer protocol, and a computer software product for retrieving a web document.