You specify the principal URL since the online search engine might have problems identifying which a person ought to be the first URL.  The subsequent tutorial will provide you with how to help Canonical URLs in Prestashop 1.five. Canonical URLs are utilised to avoid copy content material and to https://linkedbookmarker.com/story4704765/the-tag-hreflang-automatici-e-tag-canonici-seo-diaries