Recently I saw a new feature on the Google Webmaster Tools: Fetch & Render. There are 4 options in the drop down menu: Desktop, Smartphone, Mobile XHTML/WML and cHTML. What does that mean by Fetch & Render?
Well, I'll not define this for you instead of it i'll say for better understanding try looking at http://googlewebmastercentral.blogspot.in/2014/05/rendering-pages-with-fetch-as-google.html. It will tell you the exactly what is the use of the Fetch and Render.