SEO

Internal linking

Q: What is internal linking?

Internal linking is the connecting of pages within the same domain by hyperlink. It governs how ranking signals (link juice) and crawl priority are distributed across the site. One of the cheapest and most effective on-page SEO techniques.

Q: How many internal links per page make sense?

Between 5 and 100, depending on context. Too few signal thin content, too many dilute the distribution of signals. Rule of thumb: only naturally fitting links in the body text, navigation and related sections. Avoid pure link farms in the footer.

Q: Which pages should receive the most links?

Money pages and pillar content. The pages meant to generate revenue or conversions need the most internal links. At cluster level: many long tail blog articles link to a central pillar page on a core topic.

Q: What is a topic cluster in internal linking?

A topic cluster is a network consisting of a pillar page on a core topic and several cluster pages on sub-aspects, all of which link to the pillar. This is how Google understands a domain's topical authority in a field. The most important structure for topical authority.

Also known as: Internal linking, internal links, inlinks

Internal linking refers to all hyperlinks placed between pages within the same domain — from the main navigation through contextual text links in articles to footer links. It governs three central SEO mechanisms: crawl efficiency (which URLs Googlebot finds, and how quickly), topic cluster signals (which pages belong together thematically) and link equity distribution (how much ”authority” flows from the strong homepage to deeper pages).

The three internal linking patterns

Hub & spoke (topic cluster) — a hub page covering the main topic, from which many specific sub-topics are linked. Spokes link back to the hub and to one another. Maximum topical signal effect.
Pillar pages — long, comprehensive pillar pages on the overarching topic, from which internal links lead to detailed sub-pages. The standard in content marketing.
Siloed architecture — strict topic silos in which content is almost never linked across themes. A clear hierarchy, but fewer cross-cluster signals.

Concrete linking rules

Descriptive anchor texts — never ”click here”, always thematically appropriate.
Money pages reachable from the top level — no more than 3 clicks from the homepage.
Lift deep pages — link to new or poorly ranking money pages from pages with strong traffic.
Topically relevant cross-links — link between related articles, not just within a category.
Do not over-optimise — keep the distribution natural; avoid a collection of identical anchors pointing at the same target.
Avoid dead links — check for 404s regularly and repair them.

Internal linking as a quick win

Three common levers with a high ROI: (1) Identify the 5 strongest pages on the domain (via GSC: most clicks or best position). From there, place targeted links to money pages still stuck at positions 11–20. (2) Look for pages with high topical authority but few outgoing links — add thematically fitting links. (3) When building a cluster: a hub page with clear H2 sections, each with a link to the corresponding spoke. This simple step can move top 10 rankings within 4–6 weeks.

Example from practice

Example: A SaaS provider has a strong homepage (DR 56), but 12 money landing pages are stuck at positions 14–22. Internal linking audit: the money pages are only reachable from the footer list and one deep overview page. Three thematic links per money page were added from the three strongest blog articles in each case. After 5 weeks: 8 of the 12 money pages are in the top 10 and the organic lead share from these topics has doubled — without a single new backlink.

Frequently asked questions

What is internal linking?

Internal linking is the connecting of pages within the same domain by hyperlink. It governs how ranking signals (link juice) and crawl priority are distributed across the site. One of the cheapest and most effective on-page SEO techniques.

How many internal links per page make sense?

Between 5 and 100, depending on context. Too few signal thin content, too many dilute the distribution of signals. Rule of thumb: only naturally fitting links in the body text, navigation and related sections. Avoid pure link farms in the footer.

Which pages should receive the most links?

Money pages and pillar content. The pages meant to generate revenue or conversions need the most internal links. At cluster level: many long tail blog articles link to a central pillar page on a core topic.

What is a topic cluster in internal linking?

A topic cluster is a network consisting of a pillar page on a core topic and several cluster pages on sub-aspects, all of which link to the pillar. This is how Google understands a domain's topical authority in a field. The most important structure for topical authority.

Used in Rankmio for

Internal linking graph and topic cluster analysis

Go to the feature →

Last updated: 2026-06-17 · Browse all glossary entries