When page Bosnia and Herzegovina WhatsApp Number List a canonical link element referencing page B, we say that page A has been canonized . the process by which a preferred version of a page is selected from among several other .Although their meanings are not the same, the following terms are often used to refer to the canonical URL: canonical tag, canonical link, rel canonical, or rel = “canonical”. For ease of reference, when we refer to the canonical HTML element, we’ll call it canonical URL.Canonical URL allows you to avoid duplicate content , both internally and externally. Internal duplicate content happens inside your website.

External duplicate content occurs when duplicate or very similar pages exist on domains.Canonical URL tells Google, Bing, and Yahoo which pages to show and which pages to hide on search engine results pages. While search engines can choose to ignore the canonical URL, it gives you as a website owner more control over your site’s online presence.What does a canonical URL look like?Your visitors will not see the canonical URL when they visit your website. A canonical URL can be defined in the source code of the page or in the HTTP header.The canonical URL should be located in the <head> section of the page’s source code. For our home page, the canonical URL looks like this:

Canonical URLs Avoid Duplicate Content Problems

Possible scenarios in which you would need to use the HTTP header to set the canonical URL of a non-HTML document are those where the content is offered as both an ordinary web page (HTML document) and PDF (non-HTML document).Note: Currently, only Google supports setting the canonical URL using the HTTP header. For images, Google does not support a canonical URL defined through the HTTP header.There is no conceivable scenario in which including a canonical URL is a bad idea. Google, Bing, and Yahoo rely heavily on the canonical URL to determine which pages to show or hide in search engine results pages.

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The canonical URL can either reference itself or reference another page.If there is only one version of a page, make sure the canonical URL is self-referenced.Basically it tells search engines, “I’m the only version of this page, and I’m the only one that needs to be indexed.”If there are multiple versions of a page, make sure the canonical URL references the page you prefer to be indexed by search .Here are some common cases where canonical URLs can resolve duplicate content issues:When query parameters with question marks are used in the URL.When the pages are slightly different, this is commonly referred to as near-duplicates.

When multiple versions of a page were intentionally created

Request parameters in URL.Depending on the URL structure of a website, URLs sometimes contai query parameters. Request parameters in URLs are used to request certain content.While query parameters are convenient, URLs that contain them are difficult to read, and duplicate content is easy to create.When the pages are only slightly different, we often call them “near-duplicates”. A good example of near-duplicate pages is that of e-commerce sites that sell shoes. Imagine you have a size 38 Nike Air Max shoe available in red, blue and black. If you choose another color, the URL will change, but 99% of the page content remains the same.

There can be many reasons for intentionally creating multiple versions of a page. Here are two examples:Custom landing pages for Google Ads campaigns .Conduct conversion rate optimization tests where you test three versions of the same page, which have essentially the same content.When there are multiple versions of a page, be sure to point the canonical URL to the preferred version you want indexed. When a canonical URL references another URL, it tells search engines that there are multiple versions of your page that are either the same or very similar.  This canonical tag must be found on all affected pages.

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