Internal Linking: The Underrated SEO Lever

What Internal Linking Does

Internal links are links from one page on your site to another page on the same site. They serve three functions: they help search engine crawlers discover new or deep pages, they distribute relevance and authority signals across the site, and they help users navigate to related content.

Why It's Underrated

Internal linking is entirely within your control — unlike backlinks, you don't need anyone else's cooperation to fix it. Yet it's one of the most commonly neglected parts of on-page SEO, often left to whatever links a content writer happens to add rather than being planned deliberately.

How to Build a Strong Internal Linking Structure

1. Identify your pillar pages — the broad, comprehensive resources on your core topics.
2. Build supporting articles that go deep on subtopics, each linking back to the relevant pillar.
3. Link supporting articles to each other where genuinely relevant, not just up and down the hierarchy.
4. Use descriptive, varied anchor text that reflects the linked page's actual topic rather than generic phrases like 'click here.'
5. Regularly audit for orphan pages — pages with no internal links pointing to them — since these are hard for both crawlers and users to find.

Anchor Text Best Practices

Anchor text gives search engines context about the linked page's topic. Descriptive anchors ('how Core Web Vitals affect rankings') are more useful than vague ones ('learn more'), but avoid repeating the exact same anchor phrase across many links — natural writing produces variation, and unnatural repetition can look manipulative.

The Hub-and-Spoke Model

A pillar page covers a broad topic comprehensively; supporting 'spoke' articles cover specific subtopics in depth and link back to the pillar. This structure concentrates topical signals, helps Google understand the full scope of what a site covers, and gives users a clear path from a broad overview into the specific detail they need.

Common Mistakes

• Linking only from the homepage and main navigation, leaving deeper content isolated.
• Using the same exact-match anchor text everywhere it's linked.
• Never linking back up from supporting content to its pillar page.
• Leaving orphan pages that receive no internal links at all.

How to Measure Internal Linking Health

A site crawler (or Search Console's Links report) will show which pages have the fewest internal links pointing to them. Pages you consider important but that show low internal link counts are a clear action item.