Nofollow Link
A nofollow link is a hyperlink that includes the `rel="nofollow"` attribute, which signals to search engines that the linking page does not want to endorse or pass PageRank to the linked destination. Google introduced the nofollow attribute in 2005 as a mechanism for webmasters to flag paid, user-generated, or otherwise untrusted links without facing penalties for linking to low-quality pages.
In 2019, Google updated its nofollow guidance, reclassifying it as a "hint" rather than a directive — meaning Google may still choose to crawl and partially credit nofollow links at its discretion. Two additional link attributes were also introduced: `rel="sponsored"` for paid links and `rel="ugc"` for user-generated content. Despite not passing full link juice, nofollow links can still drive referral traffic and contribute to brand visibility.
Why it matters for SEO
A natural backlink profile includes a mix of dofollow and nofollow links, and an unnaturally all-dofollow profile can itself be a red flag. While nofollow links do not pass full link equity, they still contribute to brand exposure, referral traffic, and the overall diversity of your link profile.