Examine your site navigation and link architecture to be sure all canonical pages are very easily accessible. You'll want to constantly internally link directly to the canonical URL in which attainable. Yandex: Russia’s most widely used internet search engine also supports hreflang tags. It employs them for improved indexing in https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html