How to check whether a link is nofollow
In Chrome, right-click the page and choose Inspect. In Firefox, right-click and choose View Page Source. Then search for nofollow and any instances will be highlighted.
Natural vs unnatural links
Google rewards natural, organic links and penalizes the alternatives. A natural link is one another site adds without your prompting because they found your content relevant and useful. An unnatural link is one created to deceive search engines and manipulate rankings, in violation of Google's guidelines. Common examples of unnatural links:
- Comment spam
- Links from low-quality directory sites
- Excessive cross-linking
- Link exchanges for services
- Paid links
Dofollow vs nofollow
Dofollow links tell crawlers and users that you have trustworthy, relevant content worth recommending. They boost credibility, drive traffic, and help your page rankings climb with enough of them.
Nofollow links don't pass that credibility and don't directly affect SEO. But when a well-known site links to yours - even with nofollow - it can still drive serious referral traffic. YouTube, Wikipedia, Reddit, Twitch, Quora, and Medium are among the major platforms that nofollow their outbound links by default.
Common inbound link types that are typically nofollow: press releases, certain news and blog links, user-generated content (forum posts), blog comments, YouTube descriptions, Facebook posts, paid links.