Web applications pervade our life, being crucial for a multitude of economic, social and educational activities. For this reason, their quality has become a top-priority problem. End-to-End testing aims at improving the quality of a web application by exercising it as a whole, and by adopting its requirements specification as a reference for the expected behaviour. In this paper, we outline a novel approach aimed at generating test scripts for web applications from either textual or UML-based requirements specifications. A set of automated transformations are employed to keep textual and UML-based requirements specifications synchronized and, more importantly, to generate End-to-End test scripts from UML artefacts.