The module automatically adds a default canonical url to all of your solution, class, CMS pages only. By default, the module employs The existing url of the web site because the default canonical url. It will also help you include the default "x-default" tag for customers from international locations for https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html