Backlinks

Definition
A backlink is a link from another website pointing to yours, treated by search engines as a vote of confidence in the page it points to.

Why it matters

Backlinks are one of the main signals search engines use to judge which pages deserve to rank. A page that earns good links ranks higher, which makes it more visible to writers, which often earns more links.

They also bring visitors directly. A link from an article your buyers read sends traffic that arrives already interested. Quality matters far more than count: a few links from respected sites in your field are worth more than hundreds from sites nobody reads. Good links are slow to earn, and search engines discount links that look bought or manufactured, so competitors cannot copy them quickly.

How to apply it

  • Publish something worth citing: original data, a survey or the most complete guide on a topic that buyers search for. Keep it current.
  • Check what already ranks for the term, and make the new page clearly more thorough.
  • Earn links through guest articles, podcast appearances and expert quotes. Each one also starts a relationship.
  • Look at the Links report in Google Search Console to see who already links to the site, and find pages that others link to which now return an error, so they can be redirected.
  • Link your own pages together as well. See internal linking.

What it is

When one website links to another, the receiving page gains a backlink. Search engines began by treating these links as votes: a page that many trustworthy pages point to is probably worth showing. Links are not the only ranking signal, but they remain one of the main ones.

Not every link counts the same. A link from a respected publication in your field carries far more than dozens from sites nobody reads. A site can mark a link with a rel attribute, such as nofollow, sponsored or ugc, to tell search engines it is not an endorsement. Google treats these as hints and not as strict rules.

Common mistakes

  • Buying links. Google's spam policies treat paid links meant to pass ranking credit as link spam.
  • Counting links instead of judging relevance and quality.
Worked example

Suppose a twelve-person payments company wants to rank for a term that competitors already own. It publishes an original survey of card fees across ten countries, the sort of page other writers cite. To see which sites already link to the leading guides, the team runs a backlink analysis in SEMrush. The report lists the referring domains, and three of them are industry newsletters that accept guest articles. The team pitches one with a short, specific offer: survey data its readers have not seen. Say the page earns four links in its first quarter. Each link brings readers and a stronger signal, and the page climbs from page three to the bottom of page one.

Tools in the example

Some links are affiliate links: we may earn a commission at no cost to you. It never decides a ranking. How we work with partners

  1. Article

    Domain authority

    A third-party score that estimates the strength of a site's link profile.

  2. Article

    Topical authority

    Built when many good links point at pages on a related subject.

  3. Article

    SEO

    The wider discipline in which backlinks are one of the main pillars.

Where it shows up

  • Search engine optimisation (SEO) is getting found in search results without paying for ads. It is free in clicks but takes time and consistency to build.
    25 chapters