META tags provides information about a web page such as who created the page, what the page is about and which keywords represent the page content. They do not affect how the page is displayed. Many search engines use this information when building their indices.
By default blogger does not contain META tags. In this tutorial I’m going to tell you how you can add META tags to your blog without causing problems. If you simply add these tags you will get "Duplicate meta descriptions" HTML suggestion as following picture.
Let’s see how we can add these tags without causing problems.
1. First log into your blog and from dashboard go to the "Layout --> Edit HTML" page as follows;
2. Then locate the <b:include data='blog' name='all-head-content'/>, you can find it between <head > and </head> tags as following picture;
Then paste this code just after that code.
<b:if cond='data:blog.url == data:blog.homepageUrl'> <meta content='Insert description here' name='description'/> <meta content='Insert your keywords here' name='keywords'/> <meta content='Insert Your Name' name='author'/> </b:if>
Description : Limit it for maximum 200 characters.
Keywords : Do not repeat more than three times. The maximum number of keywords we recommend for this tag is 20.