A remote authoring service is described. Remote page authoring includes receiving a stream of data from a server that includes embedded control attribute data. The embedded control attribute data facilitates the generation of a proxy control and allows a web page designer to make modifications to dynamic elements of the webpage without requiring the executable code for the actual controls. The proxy control may provide preview data of the control to allow the client to perform authoring functions using the proxy control. Modifications made via the proxy control service may then be transmitted to the server where the controls are updated.