TL;DR

Backlinks are links from other websites to yours. Search engines treat them as votes of confidence — the more high-quality backlinks you have, the more authority your site earns.

Key Points

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Backlinks from authoritative, relevant sites carry significantly more weight than links from low-quality sources

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The anchor text of a backlink gives search engines context about the linked page's topic

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A diverse backlink profile with links from many unique domains is more valuable than many links from the same source

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Toxic or spammy backlinks can harm rankings and may require disavowal via Google Search Console

Why Backlinks Matter for SEO

Backlinks remain one of Google's strongest ranking signals, dating back to the original PageRank algorithm. When a credible website links to your content, it transfers a portion of its authority — often called 'link equity' — to your page^[1]. This signal tells search engines that your content is valuable enough for others to reference. Pages with strong backlink profiles consistently outperform those without in competitive search results.

Types of Backlinks

Not all backlinks are equal. Dofollow links pass link equity and directly influence rankings, while nofollow links include a rel='nofollow' attribute that tells Google to treat them as hints rather than directives^[1]. Editorial backlinks — earned naturally because your content is genuinely useful — are the gold standard. Paid links, link exchanges, and link schemes violate Google's spam policies and can result in manual penalties^[2]. Your Domain Authority is largely a function of the quality and quantity of your dofollow backlink profile.

How to Earn Quality Backlinks

The most sustainable backlink strategy is creating content so useful, data-driven, or unique that others naturally want to reference it. Original research, comprehensive guides, and free tools attract organic links over time^[3]. Outreach — contacting relevant sites to let them know about your resource — amplifies this. Guest posting on reputable publications in your niche, getting listed in industry directories, and building relationships with journalists through HARO (Help a Reporter Out) are all proven acquisition tactics that improve your overall Domain Authority.

SOURCES

Google Search Central — Link Schemes & Spam Policies

Ahrefs — Link Building for SEO: The Beginner's Guide

Ahrefs — How to Get Backlinks

Last updated: June 8, 2026

Related Terms

Domain Authority

A third-party score (0–100) developed by Moz that predicts how likely a website is to rank in search engine results pages based on its backlink profile.

SERP

The page Google or another search engine displays in response to a user's query, containing organic results, paid ads, and rich features like featured snippets, image packs, and knowledge panels.

Organic Traffic

Website visitors who arrive through unpaid search engine results, as opposed to paid ads, social media, direct visits, or referral links.

E-E-A-T

Experience, Expertise, Authoritativeness, and Trustworthiness — Google's framework for evaluating content quality, used by human Quality Raters to assess search result quality and inform algorithm development.

Put it into practice

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