What is role of Canonical tag in SEO?

[Shankertravels]

Hello friends,

Can explain in full details? What is role of Canonical tag in SEO?

[Sonika11Mehra]

A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical" or "preferred" version of a web page as part of search engine optimization.

[wellliving]

A canonical tag specifies the original content page of a given page to a search engine such as Google. Canonical tags are used to declare a single page as its own source or for duplicate pages to reference their source page.

[swlocums]

A Canonical tag which is used for declaring single web page defines as own source pages or corresponding pages for their source pages. In SEO, it is used to resist duplicate content and assigned to the search engine ranking value that relevant the content of web pages.

[Arangs]

Canonical URL used to prevent duplicate content in the website. For example, the same one site can have multiple url pointing to the same with or without the www, url home.aspx index.html or at the end, whether or not containing seal url (/) at the end ... The search apparatus Search this url will identify different but point to the same content 1 leads to duplication. We defined all the urls that are duplicates (canonical) url of the original one, so the search engines will index only one original single url and ignore the other copies.