A nofollow link is a hyperlink that tells search engines not to pass ranking credit in the usual way through that link. It matters because it changes how you evaluate backlinks, outbound links, and page authority signals during an SEO review. When you check a website’s link profile, nofollow links can still drive referral traffic and brand exposure, but they usually should not be counted the same way as followed editorial links when estimating ranking impact.
How a nofollow link works
The nofollow attribute is added to a link in the HTML, typically as rel="nofollow". Search engines use it as a hint that the linked page should not receive the same endorsement signal as a normal link. For site owners, this is most relevant in areas where links are not fully editorially controlled, such as blog comments, forum posts, sponsored placements, or user-generated profiles.
During an SEO check, this helps answer practical questions: Are important backlinks actually passing authority? Are paid or user-submitted links marked correctly? Is the site linking out in a way that reduces spam risk? These checks matter when diagnosing why a page has many links but limited ranking improvement.
What to look for in an SEO audit
When reviewing nofollow links, focus on the role they play rather than treating them as useless. A healthy backlink profile often includes a mix of link types. The key is understanding which links can influence rankings more directly and which mainly support discovery, traffic, or trust signals.
- Check whether sponsored or affiliate links use the appropriate
relvalue. - Review comment sections and user-generated pages for spammy outbound links.
- Separate followed and nofollow backlinks in your link audit reports.
- Do not overvalue nofollow links when estimating why a page ranks.
Example of a nofollow link in practice
Imagine a local plumber gets mentioned in a newspaper article and the link is marked nofollow. That link may still send qualified visitors, increase branded searches, and support credibility, but it may not pass the same ranking value as a standard followed link from a relevant trade association. In a real audit, you would record the mention as useful, but you would not treat it as strong evidence of link equity growth.
Nofollow link vs followed link
A followed link is generally interpreted as a stronger endorsement for ranking purposes, while a nofollow link is more limited as a ranking signal. That distinction matters when prioritizing link-building efforts and cleaning up outbound link issues. If a site depends heavily on nofollow mentions but lacks strong followed links from relevant pages, the next SEO action is usually to improve link-worthy content and earn better editorial references rather than simply increasing raw link counts.