Internal Linking: Link Equity, Anchor Text & Site Structure

Backlinks depend on others; internal links are entirely in your control—making internal linking one of the most underrated, highest-ROI SEO tools. Sensible internal links direct link equity to important pages, help search engines discover content, and guide users deeper into your site. This article explains the role of internal links, how to write anchor text, how to structure your site, and how to find orphan pages that no one links to.

The Three Roles of Internal Links#

Anchor Text Best Practices#

• Descriptive: Use words that indicate the destination, like "keyword research," not "click here."
• Natural and varied: Don't repeatedly use the exact same anchor text for the same page.
• Relevant: The anchor text matches the target page's topic.
• Moderate: Don't stuff keywords; prioritize being useful to readers.

<!-- Good: descriptive anchor text -->
First do <a href="/articles/en/content-seo/keyword-research.html">keyword research</a>.
<!-- Bad: uninformative anchor text -->
For more, <a href="...">click here</a>.

Site Structure & Link Depth#

The ideal site structure is "flat yet hierarchical": homepage → category pages → article pages, with important pages as close to the homepage as possible. The shallower the link depth (minimum clicks from the homepage to reach a page), the more easily the page is crawled and the more equity it receives.

• Keep important pages within 3 clicks of the homepage.
• Use category pages, breadcrumbs, and related articles to build clear paths.
• Use pillar pages ↔ cluster pages to organize topics (see Topic Clusters).

Getting Important Pages More Internal Links#

To make a page rank better, you can "feed" it more links from within your site:

1. Identify conversion/strategic pages (like core services, pillar pages).
2. Link to them from high-equity pages (homepage, popular articles).
3. Reference them naturally in topically related articles.
4. Make sure they appear in navigation or category pages.

The Orphan Page Problem#

Frequently Asked Questions#

What does internal linking do for SEO?

Internal links serve three roles: first, passing link equity so important pages get more internal link support; second, helping search engines discover and crawl pages and build site structure; third, guiding users to continue browsing within the site, improving experience and dwell time. Internal links are an SEO tool you fully control—they don't depend on external sites, and should be planned proactively rather than added randomly.

How should anchor text be written?

Anchor text should describe the target page's content, naturally and with variety. Use descriptive words that indicate the link's destination, like "keyword research" instead of "click here." Avoid repeatedly using the exact same anchor text for the same target page, and don't stuff keywords. Internal-link anchor text is relatively lenient, but the principle remains: accurate, natural, and useful to readers.

What is an orphan page?

An orphan page is a page that no other page links to. Search engines discover pages mainly through links, so orphan pages are hard to crawl and index and receive no internal equity. You can find them with a crawler tool or by comparing your sitemap against actual internal links, then add links to them from related pages, category pages, or navigation.

Does link depth (click depth) matter?

Yes. Link depth is the minimum number of clicks needed to reach a page from the homepage. The more important the page, the closer it should be to the homepage (usually within 3 clicks). Pages buried too deep are crawled less frequently and receive less equity. Through sensible category structure, breadcrumbs, related articles, and pillar-page internal links, keep important pages' click depth shallow.