Outbound Links

Outbound links are links on your website that point to pages on other websites. Also called external links, they help readers find sources, evidence and further reading. Used well, they make content more useful and credible; used carelessly, they can send readers to poor sites or breach Google’s rules on paid links.

Written by Paul Hoda, SEO consultant since 2005. Last updated 8 November 2026.

What outbound links are

An outbound link sends a visitor from your domain to a different domain. It is the opposite of a backlink, which points to your site from elsewhere, and different from an internal link, which connects pages on the same site. From the other site’s point of view, your outbound link is one of their backlinks and may pass some link equity.

Do outbound links help SEO?

Google has not confirmed linking out as a direct ranking factor, and representatives have said it is not something to do purely for rankings. The value is mostly indirect:

  • Usefulness: citing sources, tools and further reading helps readers who want to go deeper.
  • Trust: referencing original research, official guidance or primary data supports the trust and expertise ideas behind E-E-A-T.
  • Context: links to relevant pages help show what your content relates to.
  • Relationships: other site owners notice when you link to them, which can lead to mentions in return.

The old fear that linking out “leaks” your rankings is largely a myth. Hoarding links rarely helps and can make content less helpful. Think of how a good reference book or news article works: pointing readers to reliable evidence makes the writer look more credible, not less. The same applies to web pages.

Link attributes

Google asks site owners to qualify certain outbound links using link attributes:

  • rel="sponsored" for paid, affiliate or sponsored links.
  • rel="ugc" for links in comments, forums and other user-generated content.
  • rel="nofollow" when you do not want to vouch for the page or be associated with it.

Links that are bought or swapped to pass ranking value without these attributes can count as link schemes under Google’s spam policies.

Best practice for linking out

  1. Link to the most authoritative, original source, such as the study itself rather than a blog post about it.
  2. Use descriptive anchor text that tells readers what they will find.
  3. Link only where it genuinely helps the reader at that point in the content.
  4. Check sources are current, reputable and not full of intrusive ads.
  5. Decide on a sensible policy for opening links in new tabs, and be consistent.
  6. Audit links regularly, as external pages move or disappear.

Common mistakes

  • Linking to competitors’ commercial pages when a neutral source would serve better.
  • Leaving broken outbound links that return a 404 error, which frustrates readers.
  • Adding nofollow to every external link by default, even trusted sources.
  • Accepting payment for links without marking them as sponsored.
  • Stuffing pages with unrelated links to large sites in the hope of looking authoritative.

Key Takeaways

  • Outbound links point from your site to other websites.
  • Linking out is not a confirmed ranking factor but helps readers.
  • Cite original, reputable sources to support trust.
  • Mark paid links as sponsored and user links as ugc.
  • Check outbound links regularly for broken or changed pages.

Related Terms

Curious how this applies to your website? Request a free SEO check-up, or keep learning in the SEO Encyclopedia.