Why backlinks are still important for SEO rankings is a fair question to ask in 2026, when AI Overviews, zero-click searches and yet another algorithm update dominate every marketing conversation. Some commentators argue links matter less than they used to. The evidence says otherwise. Backlinks remain one of Google’s strongest ranking signals, and websites with a healthy, relevant link profile consistently outrank competitors who rely on content alone. This guide breaks down what a backlink actually does inside Google’s algorithm, how to separate a good link from a risky one, and what a realistic link building strategy looks like for an Australian business — plus a free interactive tool to score your current backlink profile.

What Is a Backlink and Why Does Google Care?

A backlink is simply a link from one website pointing to a page on yours. Google’s original PageRank algorithm was built on a straightforward idea: treat every link as a vote, and weight that vote by the authority of the site casting it. More than two decades on, that principle still sits underneath modern search, even with hundreds of other ranking factors layered on top.

Not all backlinks carry the same weight. A link from a well-known Australian news outlet or an established industry publication signals far more trust than a link buried in a low-quality directory. Google’s crawlers also look at where the link sits on the page, the surrounding text, and whether the linking domain is itself trusted — not just whether a link exists at all.

It’s also worth separating two numbers that get confused constantly: total backlinks and referring domains. A hundred links from one spammy forum are worth far less than ten links spread across ten genuinely relevant, authoritative websites. Referring domain diversity is one of the clearest signals of a naturally earned link profile.

There’s also a technical distinction worth understanding: followed versus nofollow links. A followed link passes ranking signal directly; a nofollow link (or the newer rel="sponsored" and rel="ugc" attributes) tells Google not to pass that signal in the traditional sense. In practice, Google treats these attributes as hints rather than strict rules, and a healthy link profile usually contains a natural mix of both — an all-followed profile can itself look manufactured.

Why Backlinks Are Still Important for SEO Rankings in 2026

Every year brings a fresh round of “links are dead” commentary, and every year the ranking data proves the opposite. Backlinks are still important for SEO rankings because they remain one of the few signals Google can use to independently verify that other people — not just the website owner — consider a page valuable enough to reference.

Content quality, technical health and page experience all matter, but a business can write those signals about itself. A backlink is different: it’s a third party voluntarily vouching for you. That’s precisely why backlinks are still important for SEO rankings in competitive industries where dozens of businesses publish similarly well-optimised content — the tie-breaker is usually authority, and authority is built largely through links.

This holds true even as AI Overviews and AI-powered search assistants become bigger parts of the results page. Those systems still rely on crawled, indexed, and ranked web content as their source material, and the pages they cite most often are the same authoritative, well-linked pages that already rank well in traditional search. If anything, being cited as a trustworthy source has become more valuable, not less.

Backlinks also feed directly into Google’s E-E-A-T framework — Experience, Expertise, Authoritativeness and Trustworthiness. A page can demonstrate expertise through its content alone, but authoritativeness is largely externally validated: it’s other sites, publications and experts choosing to reference you. That’s a big part of why backlinks are still important for SEO rankings in categories like health, finance and legal services, where Google applies extra scrutiny to who it trusts enough to rank.

Backlinks vs Other Ranking Factors

Backlinks don’t work in isolation — they sit alongside content, technical SEO and page experience. Here’s a quick comparison of how each factor tends to behave.

The takeaway is that backlinks are still important for SEO rankings precisely because they’re the hardest factor for a competitor to fake or replicate quickly. Anyone can rewrite a page overnight; almost nobody can manufacture ten years of earned editorial links.

Good Backlinks vs Bad Backlinks: What’s the Difference?

Good backlinks share a few traits: they come from topically relevant sites, sit within editorial content rather than a footer or sidebar, use natural and varied anchor text, and originate from domains that have their own organic traffic and reputation. A single link from a respected Australian industry publication can outweigh fifty links from unrelated overseas directories.

Bad backlinks tend to share the opposite traits: they’re bought in bulk, placed on private blog networks (PBNs), stuffed with exact-match anchor text, or sourced from sites with no real audience. Google’s own guidance is explicit about this — its search spam policies specifically call out link schemes designed to manipulate rankings, and sites caught relying on them risk losing rankings algorithmically or manually. You can read Google’s current guidance directly in its Search Essentials spam policies.

The practical rule of thumb: if a link exists purely because you paid for it and it wouldn’t exist otherwise, treat it as a risk rather than an asset. If it exists because a journalist, blogger or partner genuinely found your content useful, it’s doing real work for your rankings.

If you inherit a messy link profile — common after switching agencies or acquiring an older domain — Google’s Disavow Tool lets you formally tell Google to ignore specific toxic links. It’s a blunt instrument best used after a proper audit, not a first response to every low-quality link you spot, since disavowing links that were never actually harmful can strip away link equity you didn’t need to lose.

Score Your Backlink Profile

Before investing in a new link building campaign, it helps to know where you currently stand. Tick everything that’s true for your website, then hit calculate for an instant, plain-English verdict.