Introduction
Internal links are the backbone of your site's SEO architecture. They distribute page authority, help search engines understand content relationships, and guide users to related content.
Unlike external links, internal links are entirely in your hands. Every link signals which pages matter and how they relate.
This guide covers internal linking architecture, content hubs, and practical implementation patterns.
Key Concepts
Content Hub Model
A content hub organizes content around a central pillar page linked to related subtopic pages. The pillar covers the topic broadly, cluster pages dive deep. All pages interlink, creating topical authority.
Anchor Text Strategy
Use descriptive, keyword-relevant anchor text. Vary naturally to avoid over-optimization. Never use 'click here' or 'read more'.
Practical Examples
1. Related Posts Component
typescript
function getRelatedPosts(current, allPosts, limit = 3) {
return allPosts
.filter(p => p.slug !== current.slug)
.map(post => ({
...post,
score: (post.category === current.category ? 3 : 0) +
post.tags.filter(t => current.tags.includes(t)).length,
}))
.sort((a, b) => b.score - a.score)
.slice(0, limit);
}
2. Breadcrumb Navigation
typescript
function Breadcrumbs({ items }) {
return (
<nav aria-label="Breadcrumb">
<ol>
{items.map((item, i) => (
<li key={i}>
{item.href ? <a href={item.href}>{item.label}</a> : <span>{item.label}</span>}
</li>
))}
</ol>
</nav>
);
}
Best Practices
- ✅ Link from high-authority pages to important targets
- ✅ Use descriptive anchor text
- ✅ Create content hubs with pillar and cluster pages
- ✅ Add breadcrumbs for hierarchical sites
- ✅ Keep every page within 3 clicks of homepage
- ❌ Don't use 'click here' as anchor text
Common Pitfalls
- 🚫 Orphan pages — no internal links means hard to discover
- 🚫 Over-linking — hundreds of links dilutes equity
- 🚫 Broken internal links — audit regularly
- 🚫 Same anchor text everywhere