Only canonical URLs ought to be outlined in the sitemap, While Google states that doing this is a weak canonicalization signal. design We are going to include our hook to the header of our template: hook h = ‘MySocialListHeader’ . Ensure any rel=canonical you specify matches one of the URLs https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html