The goal of the GWT Graphics library is to provide consistent cross-browser vector graphics library for Google Web Toolkit. Under the hood, the library uses to XML-based languages: SVG and VML. VML implementation is for Internet Explorer. Other browsers use SVG implementation. Please note that GWT Graphics is a library for GWT. If you want to use it with Vaadin, you have to create your own Vaadin widget and use the library on the client-side. For more information, see the related links!