- Module will work devoid of generating any modify in the existing PrestaShop file to ensure existing customization and concept transform don't influence. The hreflang tag (also called rel=” alternate” hreflang=”x”) tells engines like google which nation a specific page is meant for, which language it really is composed in, https://addons.prestashop.com/pl/seo-pozycjonowanie-naturalne/30904-automatyczne-tagi-hreflang-i-tagi-kanoniczne-seo.html