Wednesday, 1 April 2015

Understanding Importance of Canonical URL Tag for Your Site

Everybody know that Google Penalize the website when it has duplicate content. Now the question arises, what happens when you have two URLs for the same page? It  indicates Google that there is duplicity in the content.

But now we use the canonical URL tag to prevent this. Through this you can set an authoritative URL of your site that you want visitors to see.


How Canonical Tag Operates

The rel=canonical tag is a way to tell Google that one URL is equivalent to another URL, for search purposes. Typically, a URL (B) is a duplicate of URL (abc), and the canonical tag points to (abc). The following tag would appear on the page that generates URL (B), in the <head></head>:
<link rel=”canonical” href=”http://www.example.com/url-abc.html” />
The Canonical URL tag attribute is similar in many ways to a 301 redirect from search engine optimization perspective. In essence, you're telling the engines that multiple pages should be considered as one (which a 301 does), but not going to redirecting visitors to the new URL. There are some differences, though:

1. 301 redirect re-points all traffic (bots and human visitors) but the Canonical URL tag is just for search engines, this mean you can still separately track visitors to the unique URL versions.
2. 301s carry cross-domain functionality, through this you can redirect a page from domain1.com to domain2.com and also carry over those search engine metrics. But Canonical URL tag is different from it, which operates exclusively on a single root domain (it will carry over across subfolders and sub domains).

When and Where To Use
Many sites have encountered issues with multiple versions of the same content on different URLs. This creates some problems and these are:
  1. Search engines don't know which version(s) to include/exclude from their indices
  2. Search engines don't know whether to direct the link metrics (trust, authority, anchor text, link juice, etc.) to single page, or make it separated between multiple versions
  3. Search engines don't know which version(s) to rank for query results
When this happens, site owners suffer ranking and traffic issues and search engines also face the problem of lowered relevancy. Thus, in order to fix these problems, webmasters has started applying the new Canonical URL tag whenever any of the following scenarios arise.

Here, you know the importance of using Canonical URL tag. If you find any query and want to add some suggestion, write in the comment section.   

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