A backlink is a link created when one website links to another. Backlinks are also called “inbound links” or “incoming links.” Backlinks are important to SEO.

Tools: Check your backlinks with Link Explorer

Why are backlinks important?

Backlinks are especially valuable for SEO because they represent a “vote of confidence” from one site to another.

In essence, backlinks to your website are a signal to search engines that others vouch for your content. If many sites link to the same webpage or website, search engines can infer that content is worth linking to, and therefore also worth surfacing on a SERP. So, earning these backlinks can have a positive effect on a site’s ranking position or search visibility.

Earning and giving backlinks

Earning backlinks is an essential component of off-site SEO. The process of obtaining these links is known as link earning or link building.

Some backlinks are inherently more valuable than Backlink others. Followed backlinks from trustworthy, popular, high-authority sites are considered the most desirable backlinks to earn, while backlinks from low-authority, potentially spammy sites are typically at the other end of the spectrum. Whether or not a link is followed (i.e. whether a site owner specifically instructs search engines to pass, or not pass, link equity) is certainly relevant, but don’t entirely discount the value of nofollow links. Even just being mentioned on high-quality websites can give your brand a boost.

Just as some backlinks you earn are more valuable than others, links you create to other sites also differ in value. When linking out to an external site, the choices you make regarding the page from which you link (its page authority, content, search engine accessibility, and so on) the anchor text you use, whether you choose to follow or nofollow the link, and any other meta tags associated with the linking page can have a heavy impact on the value you confer.

Competitive backlink research

Backlinks can be time-consuming to earn. New sites or those expanding their keyword footprint may find it difficult to know where to start when it comes to link building. That’s where competitive backlink research comes in: By examining the backlink profile (the collection of pages and domains linking to a website) to a competitor that’s already ranking well for your target keywords, you can gain insight about the link building that may have helped them. A backlink tool like Link Explorer can help uncover these links so you can and target those domains in your own link building campaigns.

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Keep learning

The Beginner’s Guide to Link Building – Everything you need to get started on one of the most important things you can do for your SEO.Backlink Basics – Moz AcademyWhat is off-site SEO?All Links are Not Created Equal: 10 Illustrations on Search Engines’ Valuation of LinksPut your skills to workGauge a Site’s Influence with Link Explorer

Link Explorer is a link popularity and backlink analysis tool that lets you research and compare any site on the web.