Definition
Internal linking is the practice of linking from one page on your domain to another, used to distribute authority, guide users through content, and signal hierarchy and relevance to search engines.
Internal links are the cheapest SEO win most sites neglect. They cost nothing to add, they distribute PageRank from strong pages to weak ones, they help search engines discover content, and they keep users on the site. A site with great content and bad internal linking ranks below its potential. A site with average content and great internal linking often outperforms.
The discipline is structural. Pillar pages should link out to subtopics; subtopics should link back. Anchor text should describe the destination, not 'click here'. The home page is most pages' fastest path to authority — links from it count more than from a buried article. The audit isn't 'do we have internal links?' but 'are they pointing to the pages we want to rank, with the anchors we want to rank for?'
Origin
PageRank itself (Brin & Page, 1998) was a model of the web as a directed graph of links. Internal linking as an SEO discipline emerged through the early 2000s as practitioners realised that the same principles applied within a domain.
How it works
- Map the site as a graph: which pages link to which?
- Identify orphan pages (zero internal inbound links).
- Identify pillar pages — topics where you want to rank, with multiple subtopics.
- Add links from subtopics to pillars, and pillars to subtopics, with descriptive anchor text.
- Add links from high-authority pages (homepage, About) to priority pages.
- Audit 6-monthly. Internal linking decays as content grows.
When to use it
Use when
- On every site. Internal linking is the highest-ROI SEO work.
- When publishing new content — link in/out at publication, not retroactively.
- After a content audit reveals orphan pages or weak hierarchy.
Skip when
- Spammy density. 50 internal links on a 600-word page reads as manipulation.
- Without descriptive anchor text. 'Click here' wastes the signal.
Key metrics
- Internal inbound links per page (target: 3+ for any page that should rank).
- Orphan page count (target: 0).
- Anchor text diversity (avoid over-optimisation on one phrase).
- Click-through rate on internal links (engagement signal).
Examples
- We added 4 internal links to the pillar page from related articles and it climbed from page 3 to page 1 in 8 weeks.
- Half their service pages had zero internal links from articles. Free SEO win sitting on the floor.
- Anchor text is half the value. 'UX design services' is more useful than 'click here'.
In practice at Makreate
Makreate's SEO engagements always include an internal-linking audit and rebuild. A recent SaaS client had 80 articles with no internal links to their pricing or service pages — the funnel was broken at the SEO level. We mapped the content, identified the priority destination pages, and rewrote 60+ articles to add 2–4 contextual links each to the pages that mattered. Service-page rankings climbed within two months, organic traffic to pricing tripled, and conversion-from-content lifted because users had an obvious next step.
SEO →Common mistakes
- Stuffing every page with links to the same target with the same anchor. Reads as manipulation.
- Forgetting to audit when content is added. Internal linking decays with growth.
- Letting the navigation do all the work. In-content links carry more weight than nav links.
- Generic anchor text. Anchor text is half the SEO value of a link.
Frequently asked
How many internal links per page?
No fixed cap. Most pages should have 5–20 in-content internal links; long pillar pages can carry 50+. The constraint is user experience, not SEO.
Do internal nofollow links matter?
Use sparingly. Nofollow on internal links is usually wrong — you're throwing away PageRank distribution within your own site.
How often should I audit internal linking?
Every 6 months on active sites; every quarter if you're publishing weekly. Audits expose orphan pages and decay.