I have a website have lots of backlinks to the version of the url without WWW and only 11 backlinks for the website with WWW version. How to transfer the SEO benefit and Link Juice to the website url version without WWW so that my Search Engine rankings are not effected?
Use a .htaccess file and 301 redirect every www. string to a non-www string. There are a lot of great .htaccess tutorials on the net that will explain.
This is a typical URL canonicalization issue that can be solved by 301 redirecting web pages. First decide which version (non-www or www) of the URLs you would like as your canonical (or preferred) URL. It doesn't matter which you pick... but you need to pick one. Then implement 301 redirects to redirect all non-canonical versions of the URL to the canonical version of the URL. As others have mentioned, IF your site is hosted on Apache, you can use Mod_Rewrite/.htaccess to implement the redirects very easily. If you select the non-www version as your canonical or preferred URL then add this to the .htaccess file in the root of your web: If you select the www version as your canonical or preferred URL then add this to the the .htaccess file in the root of your web: Of course, in the above two examples you would replace each occurance of "example.com" with your domain name.