What Are Backlinks and Why They Matter for SEO

We add backlinks to websites primarily to build trust and authority with search engines like Google.

A backlink is simply a link from one website to another. Think of it as a “vote of confidence” in the digital world. When a reputable website links to your site, it tells search engines that your content is valuable, credible, and worth sharing. Google’s own Links report documentation defines a backlink as a link on another site that points to a page on yours.

Why backlinks matter

1. Improved search engine rankings (SEO)

Search engines use complex systems to decide which pages should appear at the top of results. Backlinks remain one of the strongest ranking signals. If multiple high-quality, relevant websites link to your page on a topic, Google is more likely to treat that page as an authoritative source. Moz’s backlink guide frames these links as trust signals that support authority and relevance.

2. Faster indexing and discovery

Before search engines can rank a page, they have to find it. Crawlers discover content by following links from pages they already know. If your site has few or no inbound links, discovery can be slow. A link from a frequently crawled site helps bots find and index your pages faster. Google’s link best practices also stress clear, crawlable HTML links so discovery works reliably.

3. Referral traffic

Beyond SEO, backlinks still do their original job: sending readers to useful resources. When a popular industry blog cites your work, a share of that audience may click through. That referral traffic is targeted and independent of search rankings.

4. Brand authority and recognition

A link from a known industry publication, news outlet, or respected brand associates your company with established names. That association builds trust with people who land on your site, not only with algorithms.

Quality over quantity: one editorial link from a relevant, respected site is worth far more than hundreds of links from low-quality, spammy, or unrelated directories.

How do I get high-quality backlinks?

High-quality links are earned, not manufactured. Focus on assets and relationships that give other sites a genuine reason to cite you:

• Publish link-worthy content: original research, case studies, practical guides, and data that others want to reference.
• Earn editorial mentions: contribute expert commentary to industry publications, podcasts, and partner blogs when you have real substance to share.
• Build useful tools and resources: calculators, templates, and checklists often attract natural citations.
• Strengthen real partnerships: clients, vendors, associations, and community programs that mention you for legitimate reasons.
• Fix unlinked brand mentions: when someone already talks about you without a link, a polite request can convert a mention into a citation.
• Keep profiles accurate: consistent company profiles on trusted platforms help discovery, but they are not a substitute for editorial links.

Avoid buying links that pass ranking credit, automated link packages, or mass directory submissions. Google’s spam policies treat link schemes, paid links that pass ranking signals, and excessive link exchanges as violations. Paid or commercial links should be marked with rel="sponsored" or rel="nofollow".

What are toxic backlinks?

“Toxic backlinks” is an industry term for inbound links that look manipulative, spammy, or harmful to trust. Google does not use that exact label, but its policies describe the same problem as link spam: links created mainly to manipulate rankings.

Common warning signs include:

• Links from irrelevant or low-value directories and bookmark farms
• Paid guest posts or advertorials with keyword-stuffed anchors that pass ranking credit without proper disclosure
• Automated comment spam, footer link networks, or widget link farms
• Sudden spikes of exact-match commercial anchors from unrelated sites
• Sites with thin, scraped, or clearly spammy content linking to you at scale

If you find suspicious links, Google’s guidance is to first try removal where possible, then use Search Console’s Links report to understand the pattern. For persistent spam you cannot remove, the Disavow tool is a last resort, not a default tactic. In many cases Google already discounts obvious spam, so chasing every low-quality link is usually a waste of time.

Practical takeaway

Backlinks work because they reflect reputation. The durable strategy is to create work worth citing, earn links from relevant sites, and stay clear of schemes that try to fake trust. For a deeper primer, see Backlinko’s backlink overview and Google’s official documentation linked above.

Building a stronger digital presence for your product or services? Talk to our team, or explore related reading in our blog.