The module automatically adds a default canonical url to all your products, group, CMS pages only. By default, the module works by using the current url from the page since the default canonical url. HubSpot CMS people can alter their settings to have the CMS automatically include self-referencing URLs. Shopify https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html