What Are Backlinks and How Do They Work

What is a backlink?

A backlink is an incoming hyperlink from one website to another. When a local newspaper writes an article and includes a clickable link to your bakery's website, that newspaper has given you a backlink. These incoming links act like street signs pointing visitors and search engines toward your business.

Beneath the text you read on a screen, a link is a short piece of HTML code. It looks like this:

<a href="https://yourbakery.com">Visit our local bakery</a>

The visible, clickable words in that code are called anchor text. In the example above, "Visit our local bakery" is the anchor text. This text gives human readers and search engines a strong hint about what they will find if they click.

As the marketing platform Mailchimp notes in their glossary, backlinks are simply links from other sites pointing to yours. They are fundamental to how the web operates.

What is the difference between a backlink, internal link, and external link?

The difference comes down to direction. Backlinks point from another site to yours. Internal links connect pages within your own site. External links point from your site out to someone else.

Here is how they break down for a typical small business, like an independent plumber.

All three matter. Internal links help visitors navigate your site. External links prove you cite your sources. Backlinks bring new visitors to your digital front door.

Why are backlinks important for SEO?

Backlinks act as independent votes of confidence that help search engines decide which websites to trust. When multiple reputable websites link to a page, systems like Googlebot view that page as a credible authority on its topic.

To understand how these links improve your visibility, you have to look at search engine crawlers. Googlebot is the automated software Google uses to browse the web. Official documentation from Google Search Central states that links help crawlers find your pages and understand how they relate to other content.

Once a crawler finds a link, it passes along a trust metric historically called PageRank. PageRank and link equity are concepts search engines use to weigh page importance based on inbound links. A link from a major university passes more trust than a link from an unknown blog. Engenius points out that search engines view these links as endorsements of your content's value.

At LinkRobin, we reason that AI answer engines also use inbound links as a proxy for trust. If you want an AI to cite your business as the best local clinic, earning links is a logical way to signal your credibility.

Links also generate direct referral traffic. Referral traffic consists of visitors who click a link on another site and land on yours. As Plausible Analytics highlights in their SEO guide, a strong link on a popular site can drive targeted visitors. These people are already interested in what you offer, entirely separate from search engine algorithms.

What makes a backlink high quality?

A high-quality backlink comes from an editorially vetted, topically relevant website that real humans actually read. Links that exist only to manipulate search rankings can harm your site rather than help it. This includes links from private networks or paid directories.

Evaluating a link means understanding dofollow vs nofollow links. By default, a standard hyperlink is "dofollow," meaning search engines follow it and pass trust. A "nofollow" link includes a specific tag (rel="nofollow") telling search engines not to pass authority. Social media profiles and forum comments almost always use nofollow tags.

There are two other specific tags to know. The rel="sponsored" tag is used for paid advertisements or affiliate links. The rel="ugc" tag marks user-generated content, like comments on a blog. While nofollow links do not directly boost your search authority, they still put your business in front of real people.

To judge if a backlink is high quality, run it through this four-part filter:

1. 1Topical relevance: Does a link from this site make sense? If you sell gardening tools, a link from a landscaping blog is relevant. A link from a cryptocurrency forum is not.
2. 2Editorial placement: Did a human editor choose to place the link? If anyone can create an account and publish a link without review, the link carries very little weight.
3. 3Site reputation: Does the linking site have its own authority? A known industry publisher is highly valuable. A parked domain full of scraped articles is spam.
4. 4Human readership: Do actual people visit the linking page? If a page gets zero traffic, a link there will not send you any potential customers.

Avoid link farms and private blog networks (PBNs). These are clusters of websites built solely to sell links. Search engines frequently penalize sites that buy links from these networks.

How to check your website backlinks for free

You can find exactly who links to your site using Google Search Console. This is a free tool provided directly by Google. The built-in Links report lists your top linked pages and the exact domains pointing to them.

You do not need expensive software subscriptions to see your link profile. You can check backlinks for free using data straight from the source.

Here is the exact process to audit your links:

1. 1Go to Google Search Console and verify ownership of your domain. You can do this by adding a small text record to your domain registrar.
2. 2Once verified, look at the left-hand menu and click on "Links" near the bottom.
3. 3Under "External links," find the "Top linking sites" report and click "More."
4. 4You will see a list of every domain Google knows is linking to you. Click on any domain to see exactly which of your pages they link to.

This free report shows you what search engines already see. Third-party tools offer massive backlink databases. However, as detailed by the Similarweb Knowledge Center, Google Search Console is the most accurate reflection of how Google specifically views your incoming links.

Practical ways to earn your first editorial backlinks

Small businesses can earn their first links by asking existing suppliers for a mention or pitching local press. You can also fix broken links or submit to strict niche directories. These methods rely on real-world relationships rather than technical tricks.

You do not need an outreach team to secure these four types of editorial links:

Supplier and partner pages If you buy software, inventory, or equipment from another company, check if they have a partner page. A local coffee shop can ask their bean roaster for a link on the roaster's stockist page.

Local press and [digital PR](/blog/digital-pr-link-building) Local newspapers and community blogs constantly need stories. If you sponsor a local event or hit a major business milestone, pitch the story to local journalists. Entrepreneur magazine notes that digital PR is one of the most reliable ways to earn authoritative mentions.

Original research and data If you have unique industry data, publish it. When a one-person SaaS company publishes a study on user habits, other writers link to that study to support their own points. Eucalypt Media confirms that research-based content naturally attracts links from journalists who need statistics.

Broken link reclamation Websites reorganize constantly, and old links break. You might find a dead link on an industry resource page. If you have a page covering the exact same topic, email the site owner. Politely point out the broken link and offer your page as a working replacement.

Eventually, your on-page content will be solid. External link acquisition will then become your primary growth bottleneck. Finding the right resource pages, unlinked mentions, and digital PR angles takes hours of manual searching. When you reach that point, a structured process is required.

LinkRobin is white hat link building software designed to handle that specific constraint. You give the platform your domain, and it analyzes your pages to build a picture of what your site is about. It searches the live web for pages where a link to you makes editorial sense. The system rejects link farms, private blog networks, and parked domains before you ever see them.

Every surviving opportunity gets an effort, risk, and relevance score. The platform finds the right editorial contact and drafts a specific human email about that exact page. Nothing sends without your approval. Mail goes from your own connected Gmail or Outlook account, with replies landing in a built-in inbox. A free scan plus ten scored opportunities requires no card.

Read the complete guide to earning editorial links.