First of all, it’s necessary to sort out “what is a backlink”. There is no need to explain everything in detail. The main thing to understand is what it is for and how it works. A backlink is a kind of Internet manipulator. It links one particular site with other external websites which contain links to this site. In other words, when you visit external sites they will lead you to that particular site. Backlinks are used for SEO purposes to optimize a website in a proper way.

Backlinks are external links to your website. They show the transition from one site to another or from one page to another. They help to index your website’s pages correctly.

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SEO backlinks are an essential part of the search engine optimization process. They help search bots to crawl your site and rank it correctly to its content. Each backlink is a part of a ranking puzzle. That’s why every website owner wants to get as much as possible backlinks due to improving website’s SEO ranking factors. It’s a type of citation or hyperlink used in the text.

Google PageRank algorithm takes into consideration the sources and the number of web page backlinks, then estimates the importance of that page. That is why when you try to search for some goods, information or service, Google and other search engines present website links in a concrete order (from the most valuable to the least important ones). Backlinks help your website attract a primary audience. There are a few terms you need to know.

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Nofollow link attribute prevent search engine robots from crawling a specific link. Initially, the nofollow attribute works at the meta tag level, but later, for more flexible control of search robots, it is considered for each individual link.

Dofollow link attribute points search bots what links are should be indexed. They intend to pass link juice from one website to another or from one web page to another. It is important for SEO goals.

Link juice: This is the value of the link to the page being promoted, which is installed on a third-party resource. Link weight is an important parameter that should be considered in the process of website optimization. It is used by search engines to assign a website a higher status (domain authority).

In fact, dofollow and nofollow parameters are used to point search robots whether it should index specified link or page, whether to consider this link as a backlink.