A canonical tag (aka "rel canonical") is a way of telling search engines that a specific URL represents the master copy of a page. Using the canonical tag prevents problems caused by identical or "duplicate" content appearing on multiple URLs.
The internet searcher cordial URL that you need the web crawlers to regard as definitive. At the end of the day, an authoritative URL is the URL that you need guests to see. Regularly accepted URLs were utilized to portray the landing page.