On-Page & Content
Internal Links
Hyperlinks that connect one page to another page on the same website, distributing ranking authority and helping users and search engines understand site structure.
What Is Internal Links?
An internal link is a hyperlink connecting one page on a website to a different page on that same site, as opposed to an external link, which points to a different domain entirely. Internal links serve three overlapping functions. For users, they guide navigation — pointing readers toward related, deeper, or supporting content they might not otherwise find. For search engines, they help establish site structure and topic relationships, effectively mapping out which pages are related to which, and signaling which pages a site considers important based on how many internal links point to them. And functionally, internal links help distribute a site's overall ranking authority across its pages: a page that receives many internal links (particularly from other well-linked, authoritative pages on the same site) tends to be treated as more important than an isolated page with few or no internal links pointing to it.
Why Internal Links Matters for SEO
Authority distribution
Internal links help spread a site's overall ranking authority across its pages, rather than concentrating it entirely on a few entry points.
Site structure clarity
A logical internal-linking pattern helps both users and search engines understand how topics on a site relate to each other.
Crawlability and discovery
Internal links are one of the primary ways crawlers find new or updated pages, especially ones with few or no external backlinks yet.
A Simple Example
A SaaS company publishes a new, in-depth guide on a specific workflow topic. The team goes back through five older, related blog posts and adds contextual internal links pointing to the new guide, using descriptive anchor text. Within weeks, the new guide starts ranking noticeably faster than it likely would have with no internal links pointing to it at all.
Best Practices
- Link to new content from relevant, already-established older pages as soon as it publishes.
- Use descriptive, natural anchor text for internal links, just as you would for external ones.
- Build topical clusters — a hub page linking out to, and receiving links back from, related subtopic pages.
- Avoid orphaned pages by making sure every important page is reachable via at least one internal link.
Common Mistakes to Avoid
- Publishing new content with no internal links pointing to it from anywhere on the site.
- Using generic anchor text like "click here" for internal links instead of descriptive phrasing.
- Over-linking every page to every other page indiscriminately, diluting the signal rather than clarifying it.
- Ignoring internal linking entirely while focusing only on external link building.
Key Takeaways
- Internal links connect pages within the same website.
- They help distribute ranking authority, clarify site structure, and aid crawling.
- New content should be actively linked to from relevant existing pages.
- Descriptive anchor text matters for internal links just as much as external ones.