What is a Nofollow Link?
A nofollow link is a hyperlink that includes the rel="nofollow" attribute in its HTML, which serves as an instruction to search engines not to pass link equity, also called PageRank or link authority, from the linking page to the destination URL. Nofollow links are followed by crawlers in the sense that the destination page can still be discovered and indexed, but the authority-passing signal that makes backlinks valuable for rankings is suppressed.
The nofollow attribute was introduced by Google as a way to combat comment spam on blogs. Since then it has evolved into a broader signal type that covers a range of linking contexts. The HTML implementation looks like this: <a href="https://example.com" rel="nofollow">anchor text</a>.
What is the difference between a nofollow and a dofollow link?
A "dofollow" link is simply a standard hyperlink with no rel attribute restricting it. Search engines treat dofollow links as endorsements: they pass link equity from the linking domain to the destination, contributing to the destination page's authority and ranking potential. Dofollow is not an actual HTML attribute; it is an informal term used to describe links that are not explicitly tagged with nofollow or its newer variants.
The distinction matters because link equity is one of the most influential off-page SEO signals. A backlink from a high-authority domain passes meaningful ranking authority when it is dofollow, and passes little to none when it is nofollow. For enterprise link acquisition programs, understanding which links are passing equity and which are not is fundamental to evaluating the ROI of any link building effort. See Off-Page SEO and Backlink Profile for the broader context.
What are the nofollow link variants?
In 2019 Google introduced two additional link attribute values alongside nofollow, giving publishers more precise control over link signals:
rel="nofollow" — the original and still most common attribute. Tells search engines not to pass link equity and not to use the link for ranking purposes. Appropriate for links you do not want to endorse generally.
rel="sponsored" — introduced to specifically identify paid or affiliate links. Google uses this to identify compensated placements and discounts them accordingly. Sites running affiliate programs or paid content should be tagging those links with sponsored rather than nofollow.
rel="ugc" — stands for user-generated content. Intended for links appearing in comments, forum posts, or other user-submitted content where the publisher is not editorially endorsing the link.
Google treats all three as hints rather than strict directives. In practice, nofollow remains the most widely used of the three for general-purpose link suppression.
When should you use nofollow on your own site?
There are several legitimate contexts where adding nofollow to outbound links is appropriate:
Paid or sponsored links, including affiliate links. Google's guidelines require that any link that exists because of a paid relationship be tagged as sponsored or nofollow to avoid violating their link scheme policies.
User-generated content where you cannot editorially vouch for the destination, such as blog comments, forum replies, or customer reviews.
Links to pages you want to remain crawlable but do not want to pass equity to, such as login pages, legal disclaimers, or privacy policies.
Do nofollow links have any SEO value?
Nofollow links do not pass traditional link equity, but that does not mean they are worthless. Several indirect benefits apply at enterprise scale:
Traffic value: nofollow links on high-traffic sites still drive referral visitors to your pages. A nofollow link in a major publication may generate more qualified traffic than ten dofollow links from low-traffic sites.
Crawl discovery: search engine and AI crawlers follow nofollow links to discover pages, even if they do not pass equity. A page linked only via nofollow can still be indexed.
Brand authority and citation signals: being mentioned and linked, even with nofollow, on authoritative domains contributes to brand recognition signals that AI systems and search engines use beyond pure link equity.
Link profile diversity: a natural backlink profile includes a mix of dofollow and nofollow links. Profiles that are entirely dofollow can look unnatural and attract scrutiny.
How do nofollow links factor into enterprise link strategy?
Enterprise link acquisition programs need to track both the quantity and the equity-passing status of their backlinks. A large volume of nofollow links from low-authority sources adds little to competitive authority. The programs with the strongest off-page performance concentrate on earning dofollow links from high-authority, topically relevant domains through editorial content, digital PR, and strategic partnerships.
When auditing a backlink profile, distinguishing between dofollow and nofollow links allows you to accurately assess what portion of your link portfolio is actually contributing to ranking authority. Use Data Cube X and Share of Voice to track how your authority and visibility metrics correlate with your link acquisition program over time.
A nofollow link is a hyperlink that includes the rel="nofollow" attribute in its HTML, which serves as an instruction to search engines not to pass link equity, also called PageRank or link authority, from the linking page to the destination URL. Nofollow links are followed by crawlers in the sense that the destination page can still be discovered and indexed, but the authority-passing signal that makes backlinks valuable for rankings is suppressed.
The nofollow attribute was introduced by Google as a way to combat comment spam on blogs. Since then it has evolved into a broader signal type that covers a range of linking contexts. The HTML implementation looks like this: <a href="https://example.com" rel="nofollow">anchor text</a>.
What is the difference between a nofollow and a dofollow link?
A "dofollow" link is simply a standard hyperlink with no rel attribute restricting it. Search engines treat dofollow links as endorsements: they pass link equity from the linking domain to the destination, contributing to the destination page's authority and ranking potential. Dofollow is not an actual HTML attribute; it is an informal term used to describe links that are not explicitly tagged with nofollow or its newer variants.
The distinction matters because link equity is one of the most influential off-page SEO signals. A backlink from a high-authority domain passes meaningful ranking authority when it is dofollow, and passes little to none when it is nofollow. For enterprise link acquisition programs, understanding which links are passing equity and which are not is fundamental to evaluating the ROI of any link building effort. See Off-Page SEO and Backlink Profile for the broader context.
What are the nofollow link variants?
In 2019 Google introduced two additional link attribute values alongside nofollow, giving publishers more precise control over link signals:
rel="nofollow" — the original and still most common attribute. Tells search engines not to pass link equity and not to use the link for ranking purposes. Appropriate for links you do not want to endorse generally.
rel="sponsored" — introduced to specifically identify paid or affiliate links. Google uses this to identify compensated placements and discounts them accordingly. Sites running affiliate programs or paid content should be tagging those links with sponsored rather than nofollow.
rel="ugc" — stands for user-generated content. Intended for links appearing in comments, forum posts, or other user-submitted content where the publisher is not editorially endorsing the link.
Google treats all three as hints rather than strict directives. In practice, nofollow remains the most widely used of the three for general-purpose link suppression.
When should you use nofollow on your own site?
There are several legitimate contexts where adding nofollow to outbound links is appropriate:
Paid or sponsored links, including affiliate links. Google's guidelines require that any link that exists because of a paid relationship be tagged as sponsored or nofollow to avoid violating their link scheme policies.
User-generated content where you cannot editorially vouch for the destination, such as blog comments, forum replies, or customer reviews.
Links to pages you want to remain crawlable but do not want to pass equity to, such as login pages, legal disclaimers, or privacy policies.
Do nofollow links have any SEO value?
Nofollow links do not pass traditional link equity, but that does not mean they are worthless. Several indirect benefits apply at enterprise scale:
Traffic value: nofollow links on high-traffic sites still drive referral visitors to your pages. A nofollow link in a major publication may generate more qualified traffic than ten dofollow links from low-traffic sites.
Crawl discovery: search engine and AI crawlers follow nofollow links to discover pages, even if they do not pass equity. A page linked only via nofollow can still be indexed.
Brand authority and citation signals: being mentioned and linked, even with nofollow, on authoritative domains contributes to brand recognition signals that AI systems and search engines use beyond pure link equity.
Link profile diversity: a natural backlink profile includes a mix of dofollow and nofollow links. Profiles that are entirely dofollow can look unnatural and attract scrutiny.
How do nofollow links factor into enterprise link strategy?
Enterprise link acquisition programs need to track both the quantity and the equity-passing status of their backlinks. A large volume of nofollow links from low-authority sources adds little to competitive authority. The programs with the strongest off-page performance concentrate on earning dofollow links from high-authority, topically relevant domains through editorial content, digital PR, and strategic partnerships.
When auditing a backlink profile, distinguishing between dofollow and nofollow links allows you to accurately assess what portion of your link portfolio is actually contributing to ranking authority. Use Data Cube X and Share of Voice to track how your authority and visibility metrics correlate with your link acquisition program over time.