Dofollow backlinks are the foundation of how off-page SEO actually works, and understanding them correctly is the prerequisite for making sense of why some link building activities produce ranking improvements and others produce activity without results.
The distinction between dofollow and nofollow links is not a technical detail that only advanced SEOs need to understand, it is the core mechanism that determines whether the time you invest in building backlinks is producing the authority growth you are working toward.
The Simple Explanation
A dofollow backlink is a standard web link that Google's crawler follows and uses to transfer authority from the linking website to the linked website. When a trusted, established website links to your site with a dofollow link, Google interprets that link as an endorsement, evidence that the linking site considers your content valuable enough to reference.
The more of these endorsements your site accumulates from authoritative, relevant sources, the more Google trusts your site as an authority on related topics, which translates directly into higher rankings for relevant queries.
A nofollow backlink is a link with an additional HTML instruction that tells Google not to pass authority through it. Google introduced this attribute in 2005 to combat comment spam, and it was subsequently adopted by most large platforms as a default policy for user-generated links.
Social media links, Wikipedia citations, most forum signature links, and many directory links are nofollow by default.
The Practical Implications for Your Link Building Strategy
Understanding the dofollow versus nofollow distinction should change how you evaluate every link building opportunity you consider. Before investing time in any link building activity, it is worth verifying whether the platform provides dofollow or nofollow links, because this single variable significantly affects the direct ranking impact of the resulting links.
This verification is straightforward. In your browser, right-click on any link and select "Inspect" to see the underlying HTML.
A standard link looks like this in the code: a href="yoursite.com". A nofollow link looks like this: a href="yoursite.com" rel="nofollow". Some platforms use rel="ugc" for user-generated content links or rel="sponsored" for paid links, both of these are treated similarly to nofollow in Google's current evaluation system.
For the complete guide to dofollow backlinks in 2026 including which platforms confirm dofollow status: seoinbounds.com/what-are-dofollow-backlinks/