Example: You've an e-commerce Internet site with product or service web pages for different sizes of a particular t-shirt. You specify the main URL since the internet search engine can have difficulty identifying which a single need to be the primary URL. The subsequent tutorial will explain to you https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html