What is the purpose of a canonical tag?

[muslimastro]

What is the purpose of a canonical tag?

[24x7servermanag]

A canonical tag is used to avoid the duplicate web content issue. It will improve the site SEO. Those are used to describe the home page. Visitors used to see the canonical URL.

If you've already added canonical tags then no need to add 301 redirect. Canonical tags are more appropriate than 301 redirect. This is the best practice so you can keep them, no need to add 301 redirect.

[sadianisar]

In SEO, Canonical tag is used to prevent the issue of duplicate content.

[sandraanderson]

Canonical tag are used to define two different URL in the same manner. Google will give the same values to both the urls in SERP.

[efusionworld]

A canonical tag is a technique of telling search engines that a specific URL stands for the master copy of a page. Using the canonical tag prevents problems caused by identical or "duplicate" content appearing on multiple URLs.

[mansi]

canonical tag is used to instruct the crawler to indicate the pae is duplicate.

[deepakrajput]

Canonical tag help to fix www & non www errors from the website.