The canonical tag is an HTML element used to indicate the preferred version of a web page when multiple versions of the same content are accessible through different URLs. The canonical tag helps search engines understand which version of a page should be considered the official or primary version.
The primary purpose of using the canonical tag is to avoid duplicate content issues that can arise when identical or very similar content is accessible through different URLs. Search engines strive to provide diverse and relevant search results, and duplicate content can cause confusion in ranking and indexing.
Here's an example of a canonical tag:
<link rel='canonical' href='https://www.example.com/original-content-page' />
In this example, the canonical tag is indicating that the preferred version of the content is the version located at "https://www.example.com/original-content-page". Search engines can use this information to aggregate indexing signals such as link equity on specified canonical URLs.
It is important to note that the canonical tag is a tool that is primarily used for SEO (Search Engine Optimization) purposes and can be beneficial in situations where duplicate content issues need to be addressed, Such as different URL parameters or variations of a page.
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