What is Canonical tag?
 

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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.

A canonical connection component is an HTML component that helps website admins anticipate copy content issues by indicating the "canonical " or "favored" form of a site page as a feature of site improvement.

Canonical tag passes the same amount of link juice (ranking power) as a 301 redirect, and often takes much less development time to implement. The tag is part of the HTML head of a web page.

Canonical tag is used to detect duplicate sites on search engines. this tag is part of the HTML head of a web page.

A canonical tag specifies the source URL (or 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 / originating page. Search Engines use the canonical tag to combat duplicate content issues and assign search engine ranking value for that content to the page designated as the source URL.

If you have duplicate sites like with www or without www then for soft redirection we use canonical tag

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.

If you have duplicate sites then this tag will be useful for your website

the search engine friendly URL that you want the search engines to treat as authoritative. In other words, a canonical URL is the URL that you want visitors to see

Canonicalization can be a challenging concept to understand (and hard to pronounce: "ca-non-ick-cull-eye-zay-shun"), but it's essential to creating an optimized website. The fundamental problems that canonicalization can fix stem from multiple uses for a single piece of writing–a paragraph or, more often, an entire page of content–that appears in multiple locations on one website or on multiple websites. For search engines, this presents a conundrum: Which version of this content should they show to searchers? SEOs refer to this issue as duplicate content

This tag is part of the HTML head of a web page. Canonical tag is used to detect duplicate sites on search engines.

The “canonical link”, is an HTML element that helps webmasters prevent duplicate content issues.

A canonical tag specifies the source URL (or 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 / originating page. Search Engines use the canonical tag to combat duplicate content issues and assign search engine ranking value for that content to the page designated as the “source” URL.

Canonical tags are very useful from SEO and a search engines point of view. These tags help search engines identify which page should it give credit to amongst the several pages.