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Internal Linking

What is internal linking and why is it critical for SEO?

By eiSEO Team Published June 15, 2025 Updated February 27, 2026
001 / What it is

What is internal linking?

Internal linking is the practice of creating hyperlinks between pages on the same website. A strategic internal linking structure distributes link equity (ranking power) throughout your site, helps search engines discover and index all pages, and guides users to related content. Key concepts include anchor text strategy, hub pages, and avoiding orphan pages that have no inbound internal links.

Internal linking is the practice of connecting pages within the same website using hyperlinks, distributing link equity, enabling search engine discovery, and guiding users to related content through descriptive anchor text and strategic page relationships.

002 / Why it matters

Why does internal linking matter?

Search engines discover and rank pages based partly on internal link signals. Pages with zero internal links (orphan pages) may never be indexed. Descriptive anchor text helps search engines understand what the target page is about. A strong internal linking strategy creates topical clusters that signal content authority and improve rankings for competitive terms.

Pages with strong internal linking receive 40% more organic traffic than orphaned pages with equivalent content quality.
Ahrefs
003 / The fix

How to fix it

  1. Audit your site for orphan pages (pages with no internal links pointing to them) and add contextual links from related content.
  2. Use descriptive anchor text that includes target keywords rather than generic phrases like "click here" or "read more."
  3. Create hub pages or pillar content that links to all related articles within a topic cluster.
  4. Limit outbound internal links per page to under 100 to avoid diluting link equity and triggering spam signals.
  5. Review and update internal links when you publish new content to connect it to your existing pages.
004 / Code example

Bad seed, good seed.

Bad
before
<p>For more information, <a href="/seo-guide">click here</a>.</p>
Good
after
<p>Our comprehensive <a href="/seo-guide">SEO best practices guide</a> covers on-page optimization in detail.</p>
005 / Common questions

Frequently asked questions

What is an orphan page?

An orphan page is a page with no internal links pointing to it from other pages on the same site. Search engines may struggle to discover and index orphan pages, and they receive no link equity from the rest of your site.

How many internal links should a page have?

There is no exact number, but aim for at least 3-5 contextual internal links per page. Avoid exceeding 100 total links per page, as excessive linking can dilute equity and appear spammy.

Does anchor text in internal links matter?

Yes. Descriptive, keyword-rich anchor text helps search engines understand the topic of the linked page. It is a moderate ranking signal and significantly better than generic text like "click here."

006 / Keep reading
SEO

URL Structure

URL structure refers to the format and organization of web page addresses. SEO-friendly URLs use hyphens to separate words, maintain a flat...

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Site Architecture

Site architecture is the hierarchical organization of pages, navigation systems, and URL structures that define how content is grouped and a...

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Link Text

Accessible link text clearly describes the destination or purpose of a link without relying on surrounding context. Screen reader users ofte...

Read more →
007 / Start

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