Canonical tag manages with duplicate content problems. Avoid duplicate content in your blog, you need to add canonical tag to you blogger blog. The canonical tag tells the Major Search Engines like Google, Yahoo, Bing, etc the popular location of the URL and helpful instruction for search engines to manage copy content issues. Some websites have two or a lot of links of an equivalent content with completely different parameter. So this is the time when Search Engines are confused about Which One is required to be Index? This post gives a complete instruction about insert the canonical Tag in blog.
How to add Canonical Tag in Blogger Blog
Follow these easy steps
Firstly: Login to your Blogger blog and Go to Dashboard
Secondly: Go to your blog template and Click Edit HTML and find this code
If this code found, which means your templet supports canonical already and if this code is not found, then you have to add the link tag manually.
Simply insert the following code before the </head> tag:
Done
Now the major search Engines e.g Google, Bing, Yahoo, Ask etc easily recognize the main URL of the page and also easily index only that page. So that's way we can avoid duplicate content on blogger blogs.