Hybrid Template Extractor v1.2
The GUI of this add-on only has one button. When pressed, the template of the loaded webpage is displayed. If it is pressed again, the original webpage is displayed.
In presence of non-structural content (e.g., the content displayed by Javascript, which does not correspond to HTML and CSS) the template can show the information in different places than the original webpage (because some javascript might have been removed because it does not belong to the template).