What Is A Nofollow Link And When Should You Use One

If you have spent any time looking into SEO or building a website, you have almost certainly come across the term nofollow link. It gets mentioned frequently in discussions about link building, sponsored content, and site health, yet a surprising number of website owners and even experienced marketers are not entirely sure what it means in practice, or more importantly, when they should actually be using one. Understanding nofollow links properly is one of those foundational pieces of SEO knowledge that can make a real difference to how your site is perceived by search engines and how you manage your link profile over time.

So, let us break it down clearly and give you a practical understanding of what a nofollow link is, why it exists, and the situations where you should be reaching for it without hesitation.

What Is A Nofollow Link?

A nofollow link is a hyperlink that includes a specific HTML attribute telling search engines not to pass authority or ranking power from one page to another. In standard HTML, a regular link looks something like this: <a href=\"https://example.com\">anchor text</a>. A nofollow version of that same link would look like this: <a href=\"https://example.com\" rel=\"nofollow\">anchor text</a>.

The rel="nofollow" attribute is essentially a signal to Google and other search engines that you are linking to a page but you do not want to vouch for it or pass any of your site's authority across to it. It does not prevent users from clicking the link and visiting the destination, it simply tells search engine crawlers to treat the link differently. In terms of what most SEO professionals call link equity or link juice, a nofollow link does not pass it in the way a standard followed link would.

Google introduced the nofollow attribute back in 2005 primarily to combat comment spam, where people were dropping links into blog comments purely to manipulate their search rankings. Over time, its applications have grown considerably.

The Difference Between Followed And Nofollow Links

To understand the value of nofollow links, you need to understand what a followed link does. When a reputable website links to your page without any special attribute, it is effectively casting a vote of confidence in your content. Search engines take these votes seriously. The more quality followed links you earn from authoritative, relevant websites, the stronger your chances of ranking well for your target keywords.

A nofollow link, by contrast, does not carry that same direct ranking weight. However, this does not mean nofollow links are useless. They can still send real visitors to your site, they contribute to a natural-looking link profile, and there is ongoing debate in the SEO community about whether Google truly ignores them entirely or treats them as a hint rather than a hard rule, which is actually something Google itself confirmed when it updated its guidance in 2019.

The New Link Attributes Google Introduced

In September 2019, Google expanded the way it handles link attributes by introducing two additional rel values alongside nofollow. These are rel="sponsored" and rel="ugc", and they give website owners more precise ways to communicate the nature of their links.

• rel="sponsored" should be used for links that are part of paid placements, advertisements, or any commercial arrangement where you are being compensated for the link.

  rel="ugc" stands for user-generated content and is intended for links that appear in comments, forum posts, or other areas of your site where visitors are contributing content rather than your editorial team.

  rel="nofollow" remains appropriate as a general-purpose attribute when neither of the above categories quite fits.

  It is worth noting that Google now treats all three of these attributes as hints rather than directives, meaning it may choose to consider them or not depending on its own assessment of the link in context. Even so, using the correct attribute is good practice and demonstrates that you are managing your site's link profile responsibly.

  When Should You Use A Nofollow Link?

  This is the part that genuinely matters to most website owners and content managers. Knowing what a nofollow link is academically is one thing, knowing when to apply it in the real world is another entirely.

  Paid Or Sponsored Content

  If you are publishing a sponsored article, a paid review, or any content where someone has compensated you to include a link, that link must be marked as nofollow or sponsored. Google's guidelines are very clear on this point. Passing followed links through paid placements is considered a manipulative link scheme and can result in manual penalties. If a brand pays you to feature their product and wants a link included, mark it with rel="sponsored" or at minimum rel="nofollow".

  Affiliate Links

  Affiliate links are another clear case where nofollow attributes should be applied. These links are commercial in nature and exist because you earn a commission when someone clicks through and makes a purchase. Google does not want these links to artificially inflate a merchant's rankings, so using nofollow or sponsored on your affiliate links is both the right thing to do and a sensible way to protect your own site from any potential issues down the line.

  User-Generated Content Areas

  If your website has a comments section, a community forum, or any area where visitors can submit their own content and include links, you should ensure those links are automatically set to nofollow or ugc. You simply cannot verify the quality or relevance of every link a user might drop into a comment, and without the nofollow attribute in place, your site could inadvertently be used as a vehicle for link manipulation by spammers.

  Untrusted Or Unverified External Links

  Sometimes you may need to link to an external source for context or reference, but you are not entirely confident in the quality or trustworthiness of that site. Perhaps it is a newly launched resource, a third-party directory, or a site you cannot fully vouch for. In these instances, using nofollow is a sensible precaution that allows you to provide the reference without endorsing the destination from an SEO perspective.

  Login Pages And Internal Utility Pages

  Some SEO practitioners use nofollow on internal links to pages like login portals, privacy policies, or terms and conditions pages. The thinking here is that you would rather preserve your crawl budget and link equity for your core content pages rather than sending it towards pages that serve a functional purpose but hold no real ranking value. This is a more nuanced use case and not always necessary, but it is worth being aware of.

  When You Should Not Use Nofollow

  It is equally important to understand where nofollow does not belong. Do not apply it to links within your own site's main navigation or to your core editorial content. Over-using nofollow internally can disrupt the flow of authority around your site and potentially harm the pages you most want to rank. Similarly, if you are linking out to a genuinely useful and trustworthy external resource from within an editorial piece, there is no need to nofollow it. Linking naturally to quality sources is a healthy practice and part of what makes the web work as it should.

  Keeping Your Link Profile Healthy

  Understanding when to use nofollow links is part of a broader discipline around managing a clean and natural link profile. Search engines have become increasingly sophisticated at identifying unnatural patterns, and a site that handles its links responsibly, both the links it gives and the links it receives, is a site that is far less likely to attract unwanted scrutiny. Whether you are a blogger, an e-commerce business, or a service-based company building your online presence, getting the basics right on something like nofollow attributes is one of those small but meaningful steps that adds up over time.

  If you are reviewing your site and not sure whether your links are correctly attributed, it is worth carrying out an audit. Look at your comments sections, check any sponsored or affiliate content, and review your external linking practices. It does not take long to bring everything in line, and the peace of mind it gives you is well worth the effort.