Internal Link
An internal link is a link from one page on your site to another page on the same site. It helps users navigate and helps search engines discover, understand, and rank your pages.
An internal link is a link that points from one page on your website to another page on the same website. Your navigation menu is full of them, your footer too, and ideally so is the body of your content. They are the connective tissue of your site, the paths that let a reader and a crawler move from one of your pages to the next. I call internal linking the most underused weapon in SEO, and I mean it: it is completely free, it is entirely in your control, and most sites do it by accident instead of on purpose.
Internal linking is the highest-leverage SEO work nobody bothers to do well. It costs nothing and you control all of it.
What internal links do for SEO
- Discovery: links are how crawlers find your pages. A page with no internal links pointing to it, an orphan page, may never be found or indexed at all.
- Authority distribution: links pass a share of a page's ranking power, its link equity, to the pages it links to. You decide which pages receive that flow.
- Context and structure: the anchor text and surrounding content tell search engines what the linked page is about and how your topics fit together.
targetThe orphan page problem
An orphan page is a page on your site with no internal links pointing to it. To a search engine, a page nobody links to internally looks unimportant, sometimes invisible. You can have a brilliant article that never ranks simply because no other page on your own site points to it. Auditing for orphan pages and connecting them is one of the fastest wins in SEO. If a page matters, make sure at least a few relevant pages link to it.
The deliberate approach starts with knowing your priority pages, the ones tied to revenue or to your most important rankings. Then you make sure your strongest pages, usually your homepage and your most-linked content, point to those priority pages with descriptive anchor text. You are routing authority toward the pages you most want to win. Because you control internal links completely, you also control their anchor text completely, so describe the destination in natural words rather than "click here". The full system is in my guide on internal linking.
Example
Say you publish a comprehensive guide that earns most of your backlinks. That guide is now an authority hub. By adding contextual links from inside it to your product page and your other key articles, you channel a share of its earned authority to those pages. The guide attracts the links from the outside world, and your internal links spread that value to the pages that need it.
Contextual beats navigational
A link inside a relevant paragraph carries more weight and context than the same link in a sitewide menu or footer. When you want to pass topical relevance, put the link in the body, surrounded by text about the same subject.
One nuance worth keeping in mind: more internal links is not automatically better. A page stuffed with dozens of links dilutes the value each one passes and overwhelms the reader, who now cannot tell which link actually matters. Link where it genuinely helps the reader and where the topical connection is real. Relevance and restraint beat volume, the same principle that governs almost everything in SEO. A good internal link earns its place because it points the reader somewhere they would genuinely want to go next, not because you needed to hit a quota of links per page.
lightbulbPRO TIP
When you publish a new page, do not stop at hitting publish. Go back and add two or three internal links to it from older, relevant pages. A brand-new page with no internal links pointing in starts life as an orphan, and orphans struggle to rank.
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