Only canonical URLs should be stated in your sitemap, Whilst Google says that doing so can be a weak canonicalization sign. Canonical tags are certainly not the only real way to declare a page’s canonical. You can utilize a few other approaches: Redirect the HTTP site for the HTTPS equivalent. https://bookmarkassist.com/story18726242/tag-hreflang-automatici-e-tag-canonici-seo-an-overview