Hreflang="en-us": the ISO code for that language used about the page, accompanied by the ISO code with the place at which that webpage is aimed (the nation/area code isn't usually expected) You need to use canonical tags whenever you hold the very same or similar information obtainable at multiple URLs. https://bookmark-vip.com/story18878303/everything-about-automatic-hreflang-tags-canonical-tags-all-pages-seo