Every other lever in SEO needs someone else's cooperation. Backlinks need other websites. Rankings need Google. Traffic needs searchers.
Internal links need nobody. You own every one of them, you can change them this afternoon, and they are free.
Which makes it strange how little deliberate thought most sites give them. This page is about doing it on purpose; it sits in our SEO guide alongside on-page SEO.
What internal links actually do
- They pass authority. A page with strong external links passes some of that strength to the pages it links to. Link from your strongest pages to the ones that need help, not the other way round.
- They establish topical relationships. When your page about local SEO links to your page about Google Business Profile, you are telling Google those things are related and that you cover the topic in depth.
- They drive discovery. A page with no internal links pointing at it is an orphan — hard for Google to find and easy to forget.
- They signal importance. Pages linked from the navigation and from many other pages read as more important than pages linked once from a 2023 archive.
- They keep people reading. The unglamorous one, and often the most valuable.
The structure that works
A hub and spoke, repeated per topic.
| Link direction | Rule | Why |
|---|---|---|
| Hub → every child | 100% of children, no exceptions | An unlinked child is an orphan whatever the sitemap says |
| Child → hub | Within the first 150–200 words, contextually | Concentrates authority on the page that should rank for the head term |
| Child → sibling | 2–4 genuinely related ones | Builds the topical web that makes a cluster read as expertise |
| Any page → money page | One per page, in context | More than one competing call to action dilutes both |
| Old post → new post | Every time you publish something related | The step everyone skips. New pages start with nothing pointing at them. |
How to find your orphans
- Crawl your site with any site crawler and export the list of URLs with zero inbound internal links.
- Compare that against your sitemap. Anything in the sitemap but not in the crawl is orphaned.
- Cross-check Search Console. Pages getting impressions but sitting at position 40+ with no internal links are the fastest wins available — they already have relevance and nothing else.
- Fix by adding contextual links from related pages. Not a "related posts" widget in the footer — a real link inside a sentence, which carries far more weight.
Common mistakes
- Linking only from the navigation. Site-wide navigation links carry less weight than contextual in-content links, because every page has them.
- The same exact-match anchor everywhere. Vary it naturally — see anchor text.
- Linking to redirects or non-canonical URLs. Every hop leaks a little, and it contradicts your canonical tags.
- Burying links at the bottom. A link in the first half of the page is read as a stronger endorsement than one in a footer block.
- Adding links for the sake of it. Fifty links in a 1,000-word article dilutes every one of them and reads badly.
- Never revisiting. Internal linking is not a launch task. It compounds only if you keep doing it.
A practical monthly routine
Thirty minutes, once a month, does more than most link-building retainers.
- List everything published since last time. Add three inbound internal links to each from older, related pages.
- Open Search Console and find pages ranking 11–25. Add internal links to those from your strongest pages — moving from page two to page one is where impressions turn into clicks.
- Re-run the orphan check.
- Spot-check that your most important commercial page is linked from every relevant guide.
Where to go from here
Find your single strongest page — the one with the most external links — and check what it links to. On most sites the answer is "the homepage and nothing useful". That page has authority it is not spending.
Then run the orphan check. Every orphan you fix is a page that already exists and currently earns nothing.
Frequently asked questions
Why is internal linking important for SEO?
Internal links pass ranking signals between your pages, tell search engines which pages you consider most important, establish which pages cover related topics, and make content discoverable. Unlike backlinks, they need nobody's cooperation — you control every one of them and can change them today.
How many internal links should a page have?
There is no correct number, and any figure quoted as a rule is invented. Link where a link genuinely helps the reader go deeper. As a practical guide, a 1,500-word article usually carries somewhere between five and fifteen contextual links without feeling stuffed. Fifty is dilution, not optimisation.
What is an orphan page?
An orphan page is a page with no internal links pointing at it from anywhere on your site. Search engines struggle to discover it, it receives no authority from the rest of the site, and it usually underperforms badly. Being listed in the XML sitemap does not stop a page being an orphan.
Do navigation links count as internal links?
Yes, but they carry less weight than contextual links inside your content, because navigation links appear on every page and so signal nothing about the relationship between two specific pages. A link inside a relevant sentence is a much stronger endorsement than the same link in a footer.
Where should internal links be placed on a page?
Higher is better. A link in the first half of the content is read as a stronger endorsement than one in a related-posts block at the bottom. For cluster pages, the link up to the parent hub should appear within the first 150 to 200 words, inside a real sentence rather than only in the breadcrumb.
We fix internal linking before we ask for a link-building budget
Orphan audits, cluster wiring and a monthly routine your team can run without us.