What is Internal Linking?
Internal linking is the practice of linking from one page on your site to another page on the same domain. It serves three purposes: helping users navigate your site, helping search engines discover and understand your content, and distributing 'link equity' (PageRank) across your pages. Strong internal linking is one of the most underutilised and highest-ROI SEO tactics available.
- Every important page should be reachable within 3 clicks from the homepage.
- Use descriptive anchor text — 'read our guide to crawl budget' beats 'click here'.
- Orphan pages (no internal links) are nearly invisible to Googlebot.
- Internally linking to a page increases its crawl priority and helps it rank faster.
- Pillar pages should link to cluster pages, and cluster pages should link back to the pillar.
How Internal Links Pass Equity
PageRank flows through internal links. A page linked from many high-authority pages (like the homepage) has more accumulated equity than a deep archive page with no links.
When you publish new content, link to it from existing high-traffic pages. This tells Google the new page matters and speeds up indexation. Think of link equity like water pressure — it flows down through the site from the most linked pages.
Building an Internal Linking Strategy
Content hubs work best: create a pillar page covering a broad topic comprehensively, then create cluster pages on specific subtopics. Each cluster links back to the pillar. The pillar links to all clusters. This structure signals topical authority.
Audit for orphan pages regularly — pages with zero internal links are often forgotten content that could be driving traffic with a few well-placed links. Screaming Frog and Ahrefs can surface these quickly.
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Subscribe free →Choose a high-volume head term your site has authority to rank for — e.g. 'Content Marketing'. This becomes your pillar page, targeting the broad keyword comprehensively.
Brainstorm 6–12 specific subtopics that fall under the pillar — e.g. 'Content Calendar Templates' or 'B2B Content Marketing Strategy'. Each gets its own dedicated page.
Publish new cluster pages or update existing ones so each addresses its subtopic thoroughly and naturally references the pillar topic within the body copy.
Ensure every cluster page contains a contextual internal link pointing back to the pillar using anchor text that includes the pillar's primary keyword.
The pillar page should link out to each cluster with descriptive anchor text. This two-way linking structure signals topical authority and distributes equity across the whole cluster.
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Run Free Audit →Frequently Asked Questions
There's no hard limit, but be practical. Link when it genuinely helps the reader navigate to something useful. 3-10 internal links per page is typical for a blog post. Avoid linking every other word — excessive linking looks spammy and dilutes the value of each link.
Yes, but it's not about keyword stuffing. Descriptive anchor text helps users and search engines understand what the linked page is about. Match the anchor text to the linked page's primary topic. Avoid generic anchors like 'read more' or 'click here'.
- 1.Google — Internal linking best practices
- 2.Ahrefs Blog — Internal Linking for SEO
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