Despite the fact that Gary Illyes, a Google analyst, believes that search engines like google and yahoo might depend significantly less on hreflang and a lot more on automatic language detection Down the road, for now, the tag is our best bet.  There are actually three ways to include hreflang https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html