Web Toolkit add-on provides functionalities for visualization, analysis and export of 3D data in web browsers.

However unfortunately since it's mostly a visualization tool, it doesn't allow editing. A user will be able to manipulate parts of the model, change its colors, add notes, etc., but such changes won't be written into the visualized file.

The only way to save them would be to translate the changes from Web Toolkit on the frontend to CAD Exchanger SDK on the backend, and export (or continue to modify) the model from there. For more information on how applications can be built with our Web Toolkit please see this tutorial.