You'll be able to force so as to add "http" or "https" before the canonical URL (to prevent replicate involving the http and https version of an internet site). Ex: if you end up picking to drive https for that canonical URL, the canonical URL from the page might be https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html