Link building

What is link building?

Link building is the process of getting other websites to link to pages on your site. Those backlinks help search engines discover your pages and judge how trusted they are. Done well, it means creating things worth citing and making sure the right people know about them.

Link building is part of off-page SEO. The methods range from purely editorial, where links come without any outreach, to active campaigns: pitching data to journalists, fixing broken links on other sites, contributing expert quotes, and asking people who mention you to add a link.

There is a clear line between earning links and manufacturing them. Google’s spam policies describe link schemes as links intended to manipulate rankings, and list buying or selling links, excessive link exchanges, automated link creation and links with optimised anchor text in articles and guest posts distributed at scale. White hat link building stays on the right side of that line: the link exists because someone chose to cite you, not because you paid or traded for it.

Most effective link building comes down to two things. First, a linkable asset: something on your site that another writer genuinely benefits from citing, such as original research, a free tool, a definitive guide, or a clear explanation of a hard topic. Second, distribution: getting that asset in front of the people who write about the subject. Neither works well alone. A great asset nobody sees earns nothing, and outreach for a weak page is just spam.

Common white hat methods include digital PR, broken link building, link reclamation, turning unlinked brand mentions into links, responding to journalist requests, and the skyscraper technique. Some popular methods, such as guest posting and niche edits, are grey: fine in some forms, a link scheme in others.

Why link building matters for SEO

Links remain one of the strongest signals for competitive rankings. When two pages are equally relevant and useful, the one more trusted sites cite usually wins. For new sites in particular, a lack of links is often what holds rankings back.

Good link building does more than move rankings. A link from a well-read article sends referral visitors, builds brand awareness, and often leads to more links as other writers find you through it. Links earned this way are also durable, because they sit on pages that stay live.

Bad link building is one of the fastest ways into trouble. Bought links, private blog networks and mass-produced guest posts can trigger a manual action for unnatural links, and Google’s SpamBrain system is designed to detect and neutralise link spam. At best you waste money on links Google ignores. At worst you lose rankings and spend months cleaning up.

How to build backlinks the safe way

1. Benchmark first. Check the referring domains of the pages ranking for your target keywords, so you know how many links a page realistically needs.
2. Find what already earns links in your niche. Look at your competitors’ most-linked pages: they show which formats (data, tools, guides) attract citations.
3. Create a linkable asset that is better or more original than what exists: new data, a free tool, a clear guide, or expert commentary nobody else has.
4. Build a target list of relevant sites: those linking to competitors (a link intersect), journalists covering your topic, and pages with broken links to similar resources.
5. Write short, personal outreach that explains why the link helps their readers. Do not ask for specific keyword anchors and do not offer payment.
6. Reclaim what you already have: fix broken pages that used to earn links, redirect old URLs, and ask sites that mention you without linking to add one.
7. Track results monthly: new and lost referring domains, which pages gained links, and whether rankings for the target pages moved.
8. Keep everything you could explain to a Google reviewer. If a link only exists because money changed hands, it should be marked rel="sponsored".

Link building example

A bike-shop chain publishes a yearly study of bike theft by city, using police data. Local newspapers and cycling blogs cover the findings and link to the study page. Internal links from the study pass some of that authority to the shop’s service and product pages. No link was bought, and every link sits in a relevant article.