Introduction
Links are usually categorized based on factors like quality (high, low), source (editorial, guest blogging), and content type (image, sidebar). A common way to group them is by where a link comes from and where it points to. This metric gives birth to two types: internal or external.
In this article, we’ll look at why this distinction matters, understand the difference between internal and external links, and learn when to use each.
Internal Links: What They Are and How They Improve SEO
Internal links are designed to connect two different pages of the same website within the same domain. For instance, a link in this article that directs readers to another article on our website is internal.
More specifically, internal links are important for:
- Navigation improvement: Internal links make website navigation more effortless as they help users find relevant information faster, improving overall user experience.
- Hierarchy organization: Internal links help define a site's architecture. They highlight the most essential pages (and how they’re connected to others), which allow visitors to understand the site's hierarchy easily.
- Search Engine Optimization: Internal links help search engines discover and understand your pages, distribute link equity across your site, and improve indexation.
External Links: Why They Matter and How to Use Them
External links are designed to connect two different pages of two different websites. For example, if I mention a Wikipedia article in this post, it will be an external link.
External links help to:
- Share Resources: As with internal links, external links also direct to additional information, but on external websites. This way, resources give readers explanations of important data and direct them to the source.
- Improve Trust and Authority: When you cite popular, high-quality pages, articles, or studies, you support your point of view and make your content more credible.
- Foster Relationships: Linking to other sites is a great way to network and build new partnerships.
Optimize for Search Engines: external links can improve the usefulness and credibility of your content by supporting claims with evidence and context.
Internal VS External Links: What's the Difference?
To understand the differences between the two, let's look at them side by side.
As you can see, at some points, external links, and at other points, internal ones win the Internal Links VS External Links battle.
Why you need both internal and external links for SEO
As we’ve seen, both internal and external links offer important SEO benefits. Let’s take a closer look at how each of them impacts website SEO in practice:
Internal Links
- Passing Link Equity: Link equity is the value one page can pass to another through a link. Internal linking helps distribute that value across your site so more pages have a chance to rank.
- Enhancing Web Authority: Internal links help you gain authority more easily than you think. Pages that have enough internal links have a higher chance of ranking. The point is that the pages have to be relevant and of high authority.
- Helps Readers Explore More: When internal links point to genuinely related content, readers who are interested can keep exploring your site instead of leaving.
- Improve Indexation: Search engines spot web pages by crawling links across the internet. So, when you add internal links, you help search engine crawlers discover and index your pages more efficiently. This can improve your site’s visibility in no time.
- Optimize for keywords: Internal links, when the anchor text clearly describes the destination, help search engines and readers understand what to expect.
External Links
- Build Credibility: Citing high-quality, authoritative sources makes your content more trustworthy to readers. This is separate from backlinks, which are links other sites give to you, not links you give out.
- Increase Traffic: External links are perfect for increasing referral traffic. When they are niche-relevant, visitors from other websites can easily become hooked on your content.
- Enhance User Satisfaction: By linking to high-quality web pages, you provide more value to readers and improve your content’s quality. This leaves users feeling satisfied, making your content more engaging and useful.
- Adds Reader Value: Linking to high-quality outside resources gives readers more complete answers, which makes your content more useful overall.
Best Practices for Internal and External Linking Strategies
- Using internal and external links optimally means making navigation easier for you, your viewers, and Google. Let’s see what that looks like in practice.
- First, use internal links that are most relevant to your page’s content. So, before rushing to add one, ask yourself: what article or page would my readers want to follow up on? Then, link to pages that would help them find other related content.
- Another thing you can do is use simple, descriptive anchor texts (instead of keyword-rich ones) that clearly capture what the linked page is about. By using internal links correctly, crawlers can better understand your site. Always link to content you consider important to your site, with or without tools designed to find internal linking opportunities.
There's no ideal internal-to-external link ratio, and no fixed number of links a page "should" have. As a practical starting point, we generally use 2 to 4 contextual internal links for shorter posts and up to 8 for longer guides, adjusted based on what the topic actually needs.
- External links, on the other hand, prioritize credibility. When you link to trustworthy, authoritative sites, you’re saying, “I’m credible, I’m reliable.” This, in turn, is highly reflective of how well-curated your content is. Only then will your readers trust you, as they would feel your content to be well-researched and backed by evidence.
- If links are sponsored or promotional, use attributes like rel="nofollow" or rel="sponsored” to communicate that to search engines. This means that the content isn’t related to your topic or niche.
- You can also make use of analysis tools like Ahrefs or SEMrush to evaluate external link quality. When your outbound linking improves user value and content strategy, you hit the jackpot.
Conclusion
You don’t need to pit internal links against external ones because they belong to the same SEO team. By using both, you improve your site’s navigation, authority, user experience, and visibility.
Once you know what you’re after, use the appropriate SEO and link-building strategies to actualize that vision.
And if you want to build a stronger internal-external link structure, book a call with our team, and we’ll map out a plan that makes your vision a reality.
About the Author
Davit Nazaretyan writes about link building, backlink audits, and SEO automation at LinkyJuice. His work focuses on separating what actually moves rankings from what just looks like it does: from cleaning up toxic backlink profiles to building outreach systems that hold up against algorithm updates. Connect on LinkedIn.
