Internal linking

Internal linking is the SEO lever almost every site leaves on the table. Every internal link passes authority from one of your pages to another. Done systematically, it can lift rankings across a whole site with no new content and no new backlinks. Done the way most sites do it (randomly, sporadically, leaving pages orphaned), it just squanders the authority you already have. This page walks through how internal links actually work, the hub-and-spoke pattern that concentrates authority, and the audit that finds where you're bleeding ranking power.

Why internal links matter

Google still uses a form of PageRank, the original algorithm that made it famous. Every link passes some authority from the source page to the destination page. External backlinks pass external authority. Internal links move your own authority around inside your site, concentrating it on the pages you want to rank most.

Four things internal links do:

• Distribute authority. A high-authority page (your homepage, your #1 blog post) can pass some of its rank power to other pages you link to.
• Signal topic relationships. Pages that link to each other tell Google they're about related topics.
• Improve crawlability. Googlebot follows links. More internal links means faster indexing.
• Help users. Better session depth, more page views, higher conversion rates.

The four principles

The hub-and-spoke pattern

This is the single most valuable internal linking move. It concentrates authority on pillar pages while spreading it naturally across the related cluster pages.

• One pillar page covers the broad topic
• A dozen cluster pages cover specific subtopics
• Pillar links out to every cluster page
• Every cluster page links back to the pillar with varied anchor text
• Related clusters link to each other where sensible

The effect: Google sees a clear topical structure, the pillar becomes the authoritative page on the broad topic, and each cluster earns rankings on its specific long-tail queries. Topic clusters are hub-and-spoke in action.

Anchor text strategy

Internal linking rules are more relaxed than external. For your own links to your own pages, lean heavily on partial-match anchors mixed with some exact-match. The "anchor diversity" rules that apply to backlinks don't hit as hard internally because Google expects site owners to use topical anchors on their own links.

Common mistakes

• Only linking from the blog, never to it. Blog pages need links pointing to them from the homepage and category pages too, or they stay starved for authority.
• Too many outbound links on one page. Over 100 and you dilute authority per link. 10 to 30 contextual links in a long article is plenty.
• Using nofollow on internal links. Don't. Your own pages should pass authority freely to each other.
• Linking only with "click here" and "read more." You're leaving topical signal on the table every time.
• Ignoring orphan pages. Pages with zero internal links pointing to them barely get indexed.

The audit that finds your ranking leaks

1. Crawl your site with Screaming Frog or Sitebulb
2. Export internal link counts per URL
3. Find orphans (pages with zero internal links in)
4. Find under-linked high-value pages (your best commercial pages with only a handful of links pointing at them)
5. For each under-linked priority page, find 5 to 10 relevant existing pages that could reasonably link to it
6. Add the links with descriptive anchor text in the body, not the footer

One afternoon of this work often moves multiple pages up a ranking tier. No new content needed.

What to do with this

Pick your top 5 commercial pages (the ones you most want to rank). Check how many internal links currently point to each. If any have fewer than 10 internal links, spend tomorrow morning adding relevant links from your 20 most-visited blog posts. This is one of the highest-ROI days of SEO work you'll ever do.

Next: content optimization, how to take a published page and make it actually rank better.