What are Backlinks? And How They Work in 2021 – EarnOnlineSources3 min read

What is Backlink?

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A backlink is a link from a website to another website. Backlinks are also known as “inbound links”. Search engines like Google and Bing consider backlinks as ranking signals or votes for a specific page because when there is a link of one website on another website, then it believes that the website is noteworthy.

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It increases your Page Authority, Domain Authority and helps you to outrank as backlinks also increases your ranking. More backlinks means higher organic search engine rankings.

Why Are Backlinks Important?

Backlinks are simply ranking signals or votes from other website. And each vote describes that the content of other website is noteworthy, valuable and useful.

So as more of these signals or backlinks you have means higher rankings of your site on search engines like Google and Bing (other search engines).

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Backlinks are especially important for SEO as backlinks increase your search engine rankings.

Google uses more than 200 ranking factors in their algorithm and confirms that backlinks are one of the main ranking factors in their algorithm.

Types of Backlinks

There are basically two types of backlinks: Dofollow Backlink that everyone wants and Nofollow Backlink that search engine ignores. Let’s talk about these two types of backlinks in detail.

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1. Dofollow Backlinks are those backlinks that everyone wants for their website or webpages as these backlinks helps in boost-up the organic search engine rankings of your site. 

But keep in mind, only backlinks come from authoritative sites are worthy and can increase your site’s rankings but those backlinks which comes from suspicious site’s are considered to be toxic or being bad.
As these suspicious sites are gained by breaking the search engine terms can panelize or may de-index your site. So be aware from these sites.

Because it’s all about quality of backlinks not quantity of backlinks.

2. Nofollow Backlinks are those backlinks that are ignored by the search engines like Google as these backlinks contains the nofollow tag so search engines didn’t crawl these sites connect to these links.

Nofollow Backlinks didn’t help you to increase your search engine rankings as they didn’t pass any value.

If you want to identify a backlink whether it is a dofollow or nofollow backlink, you can simply use backlinks checker tools. Like, SEMrush detects whether the backlink is dofollow or nofollow.

Infact SEMrush not only detects the type of backlinks, it is a complete SEO toolkit which provides you everything that is needed to do all types of of SEO.

How Do Backlinks Works?

Backlinks works as “trust signals”. When someone mentioned another link of other website in their website, then it is considered as trust signals to search engines that declares ” this website is noteworthy, valuable and useful.

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Create quality backlinks can increase your organic search engine visibility and rankings. Get quality backlinks are a tough job but it absolutely works.

Try to get backlinks from authoritative sites or the sites that are trustworthy. So linking your website passes value.

You can also check whether the site is authoritative or not by the help of SEMrush tools


So this is a little introduction to Backlinks. I wanted to share this guide with you. As you can see, there are many more things included in backlinks. I actually give you the first concrete steps to get started. Hope you enjoyed this.

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