The simplest answer to what a backlink is: it's a link that another website points to yours. When someone places a link to your address on their page, you've earned a backlink. For search engines these links act as a kind of vote of confidence; the more quality, relevant sites that reference a page, the more value it gains in their eyes. But be careful: it's not the count that matters, it's the quality. Hundreds of weak links don't replace a single strong link coming from the right context.
Why do backlinks matter so much?
Links have sat at the core of Google's ranking algorithm from the very beginning. The original PageRank idea was simple: the more sites, and the more trustworthy the sites, that link to a page, the more authoritative that page is considered. The algorithm has grown vastly more complex over the years, but this underlying logic still holds. Backlinks tell a search engine "other people trust this content too."
A backlink offers two distinct benefits. The first is SEO value: a link from an authoritative site pushes your page higher in the results. The second is direct traffic: a link on a relevant site sends its readers clicking through to you. A good backlink generates value through both channels — which is exactly why relevance matters as much as authority.
The three criteria that define a quality link
Not every backlink is equal. Three factors largely determine how valuable a link is:
- Authority: The trustworthiness of the linking site itself. A link from an established, widely cited domain is far more valuable than one from a brand-new, unknown site.
- Relevance (topical fit): How closely related is the linking page's topic to yours? A link from a software blog to your software page means much more than one from an unrelated store site.
- Placement and context: A link naturally embedded within the text is stronger than one lost in a huge list of links at the bottom of a page.
That's why, when earning links, your goal should be "the right link," not "lots of links." Links from sites that are relevant to your topic, that genuinely have visitors, and whose content is written for people will carry you over the long run.
The difference between dofollow and nofollow
Whether a link passes SEO value is determined by the rel attribute. By default a link is "dofollow" and transfers authority. If the site owner doesn't trust the link, or it was added by a user (such as in comments or forum posts), they can add a nofollow mark:
<!-- Normal link that passes authority -->
<a href="https://yoursite.com">my site</a>
<!-- Link that does not pass authority -->
<a href="https://yoursite.com" rel="nofollow">my site</a>Google later added two more values: rel="sponsored" for paid content and rel="ugc" for user-generated content. Even though nofollow links don't pass ranking power directly, they aren't worthless — they bring real visitors and are part of a natural link profile. A profile made up entirely of dofollow links, on the contrary, looks artificial.
Ways to earn natural backlinks
The most solid backlink isn't one you try to "get," but one your content deserves. Here are sustainable methods:
- Create link-worthy content: Original data, a comprehensive guide, a free tool, or a clear comparison — things people will want to cite. If your content is good enough to be referenced, links arrive on their own over time.
- Guest writing: Publish a valuable article in a respected publication in your field and earn a natural link in return. The key is delivering content genuinely worth reading.
- Digital PR and mentions: Offer a resource or commentary that helps industry sites, journalists, or bloggers. When your brand gets mentioned, a link often comes with it.
- Broken link recovery: Find dead links on relevant sites and suggest your own related content in their place. Acceptance rates are high because you're offering the site owner value.
- Relationships and community: Genuinely engage with your industry; contribute to events, forums, and open-source projects. When you're visible, getting cited becomes natural.
Mistakes to avoid
Link packages sold with promises of fast results cause harm over the long term. Google's spam policies target link schemes built to manipulate rankings, and when caught, your page or even your whole site can drop sharply. Methods to stay away from:
- Buying links in bulk: Networks selling dofollow links for money are almost always risky.
- Link farms: Networks of sites with no real content, set up solely to link to one another.
- Over-optimized anchor text: Using the exact same keyword in every link creates an artificial pattern. In a natural profile, the brand name, bare URLs, and varied phrases come in a mix.
- Irrelevant directories and spam comments: Signing up to low-quality directories and dropping links in forums produces no value, and may even cause harm.
To monitor your backlink profile regularly, use Google Search Console's "Links" report; that's where you'll see who links to you. If you spot clearly harmful, manipulative links, you can have them ignored with the disavow tool — but that tool is a last resort, so don't use it needlessly.
Frequently Asked Questions
How many backlinks do I need?
There's no fixed number. What matters is having solid links from sources that are relevant to your topic and authoritative, relative to your competitors. In a low-competition topic a few strong links may suffice, while a highly competitive field requires a broader, more varied profile. Always prefer quality over count.
Does earning backlinks require money?
No, the most valuable links are usually free: they're earned through good content, guest writing, and relationships. Dofollow links bought for money to influence rankings violate Google's policies and carry risk. If you have a paid placement, it should be marked with rel="sponsored".
Is a nofollow link completely worthless?
No. While a nofollow link doesn't pass ranking power directly, it brings real visitors, keeps your brand visible, and is part of a natural link profile. Instead of chasing only dofollow links, treat every kind of link from genuinely relevant places as valuable.
Want to earn quality backlinks for your site? Let's tackle your SEO together, from content strategy to a link-earning plan. Get in touch and let's talk about your project.