Google suggests not using rel="canonical" throughout country or language versions of your internet site. But You should use it in just a rustic or language version. As stated earlier mentioned, the hreflang and canonical tags have slight variances in their use and application. They are able to, having said that, https://addons.prestashop.com/de/seo-suchmaschinenranking-optimization/30904-automatische-hreflang-tags-und-kanonische-tags-seo.html