No follow is a tag on HTML markup language aimed at preventing or a sign to not allow Google to count the link attached to the anchor text. Nofollow tag tag is a part of backlinks. Nofollow tag can always be activated by adding a tag on your page’s edit source code.
The Function of Nofollow is to prevent Google from influencing the ranking on Page Rank. In addition, it also functions as a prevention from getting a “penalty” from Google because you have already attached a conditioned or low-quality link.
Nofollow also functions as spam prevention which affects your site’s rank.
There are two types of em>backlink, nofollow and dofollow. Both can be clicked and led to the target site.
Example of nofollow backlink code:
<a href="http://cmlabs.co/kamus-seo" rel="nofollow">Kamus SEO</a>
Example of dofollow backlink code:
<a href="http://cmlabs.co/kamus-seo">Kamus SEO</a>