Some notes on the Canonical tag

If there are a large number of sites in different forms and the same content of the page, then from the point of view of website SEO optimization, there is a problem. Different sites can access the same content of the page, will give the search engine may cause misjudgment. The emergence of the Canonical tag can try to solve this problem.

 

What is the Canonical tag? It is a kind of label that Baidu expressly stipulate to support, the purpose is to convey information to the search engine: to grab the important content that the website manager wants to present.

 

Some notes on the Canonical tag

 

 

This tag has some overlap with the 301 permanent redirect, but there are also some differences. The differences are as follows:

 

The Canonical tag works well if you want to reach highly consistent or identical content across multiple sites. 301 permanent redirects are better if you only want a specific site to reach the target content.

 

The details are as follows:

 

Both of these pages have access to the "techniques that are bad for SEO" content, but their URL format is different. Search engines are unable to distinguish which website is more important. If there is no SEO optimizer to set the website accordingly, it will cause the search engine to collect a large number of duplicate content in the target site. If it goes on like this in the long run, or an order of magnitude is large, it will cause punishment such as degradation of the website. How to solve it? The Canonical tag comes in handy.