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Backlink: definition and role for SEO

Backlink: definition and role for SEO

Backlinks help define the popularity of a website, which makes it a fundamental element in the SEO strategy.


  • Definition of a backlink
  • Importance of backlinks for SEO
  • What is a quality backlink?

In IT, what is a backlink?

Also called an inbound link, inbound link, external link or back link, the backlink is a hypertext link which allows you to send a user from a website X to a website Y. The crawl crawlers of search engines use backlinks to explore the web, discover new pages and find links between sites.

Why are backlinks important to SEO?

The backlink has known its heyday since it represents an essential solution for optimizing the natural referencing of a website in search engine results. There are two reasons for the interest in backlinks. The first is that they allow users to navigate from site to site, and therefore explore content that is new to them. The second, and the most important in the long term, is to offer crawl robots a gateway to a site (the site receiving the link). The quality and number of backlinks existing to a single website is a basic element to measure the reputation of the website in question. It is then assumed that a website to which hundreds of other sites point has necessarily an interest. A backlink can be compared to a vote: a site that collects a lot of votes is a good site.

A site with good quality external links is likely to be better positioned in the search engine results pages. Google’s PageRank algorithm ranks web pages based on the number and quality of links pointing to them. Today, however, the quantity of backlinks is no longer sufficient to advance the positioning of a website. Filters, like Google’s Penguin algorithm, have been developed to validate the quality of backlinks and limit their artificial multiplication.

What is a quality backlink?

SEOs who wish to practice good quality net linking must respect certain rules:

  • take into account the authority and quality of the site that produces the backlink
  • ensure that the link is logical and natural: integrated into semantically close content, dealing with a related theme.
  • ensure that the page hosting the link does not contain others (or very few)
  • write the link on an optimized and relevant text (the anchor of the link)
  • position the link in the body of the page, not in a footer, or on an element annexed to the main content
  • request a link in “do follow”, so that it is fully taken into account by the search engine to assess the quality of the site
  • avoid a reciprocal link exchange between two pages

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In addition, Google considers the exchange of paid links as unethical. According to him, they bias the assessment of the quality of the site receiving the link. Most often, when it spots this type of link, it invalidates its effects.

Backlink Translation

Back link
Back links to a site must be of good quality to improve SEO.
The backlinks redirecting toward a website must be efficient in order to improve the SEO.

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