The module automatically provides a default canonical url to all your product, category, CMS pages only. By default, the module uses The present url from the web site because the default canonical url. If none of these are applied, Google will depend on other alerts like hreflang, internal links, and https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html