Transformation registry service for content transformation

Methods and systems consistent with the present invention solve the inherent problems with existing XSL transformation systems by providing a transformation registry service that serves as a XSL transformation repository. The XSL transformation service enables XSL transformations in applications to deliver XML documents to various clients. Specifically, the transformation registry service maintains mappings for applications, clients, and client configurations. The client configurations are defined based on an application and XSL transformations. The client configurations also allow applications to apply or extend transformations. Each time a client requests a XML document from an application, the application may query the transformation registry service for an appropriate XSL transformation for the client and its configuration. The transformation may then be applied to the XML document and the transformed XML document may be delivered to the requesting client.