What Is Internal Link?

How Internal Links Work

An internal link does two jobs at once. For a reader, it is a doorway from one page to a related one. For a crawler, it is a discovery path and a signal. Google finds most new URLs by following links from pages it already knows, so an internal link is often the reason a page gets crawled at all — and the number and prominence of internal links pointing at a page is one way a site tells Google which of its pages matter.

But a link only counts if a crawler can follow it. Google’s links documentation is blunt about the requirement: “Google can only crawl your link if it’s an <a> HTML element (also known as anchor element) with an href attribute.” A <span> styled to look like a link, or a <div> wired to a JavaScript click handler with no href, may render fine for a mouse user and be entirely invisible to the crawler. This is the single most common way sites accidentally orphan their own pages: they build navigation in a framework that never emits a real anchor tag.

The second half of an internal link’s value is its anchor text — the visible words of the link. Google defines anchor text as “the visible text of a link” and asks that it be descriptive, concise, and relevant to the destination. Descriptive anchors help Google understand what the linked page is about and help users predict where they are going. This is where you have real editorial control, and where varying the wording across links to the same page pays off.

Types of Internal Links

Internal links come in a few functional flavors, and a healthy site uses all of them:

• Navigational links — header, footer, and menu links that appear site-wide and define the top of your site architecture.
• Breadcrumb links — the hierarchical trail (Home > Category > Page) that reinforces where a page sits.
• Contextual links — in-body links inside your content, like this one pointing to anchor text, which are the most flexible because you choose exactly what they say and where they point.
• Related-content links — modules that surface sibling pages and spread discovery across a topic.

Example of Internal Link

Google’s links guidance supplies the canonical worked example, because it shows the same link written well and badly. The document’s recommended anchor text for a link about cheese varieties is “list of cheese types” — specific, self-describing text that tells both the reader and Google what waits on the other side. It contrasts this against generic anchors it explicitly names as weak: “click here,” “read more,” or a bare “article.”

The mechanics behind the example are exact. A crawlable version is a plain anchor element:

<a href="/cheese/types">list of cheese types</a>

Google can follow that href to discover the destination and can read the anchor text to understand the topic. Now compare a version that looks identical to a human but breaks for a crawler:

<span onclick="goTo('/cheese/types')">list of cheese types</span>

There is no <a> and no href, so by Google’s stated rule the link is not crawlable — the destination gets no discovery signal from it and no anchor-text context. The lesson is the one Google keeps returning to: an internal link earns its SEO value only when it is a real anchor element a crawler can follow, carrying descriptive text that names the destination. Get either half wrong and the link still works for a mouse but stops working for search.

Internal Link vs Backlink

Internal links and backlinks are often confused because both are hyperlinks that pass signals, but they play opposite roles. A backlink is a vote from someone else; an internal link is a statement you make about your own site. You can, and should, engineer the internal graph deliberately — while backlinks have to be earned.

Frequently Asked Questions

The Bottom Line

An internal link is a hyperlink between two pages on the same site — the wiring that lets both people and crawlers move through your content and lets authority flow where you send it. It works only when it is a crawlable anchor element with descriptive text. Unlike a backlink, every internal link is yours to place and phrase, which makes internal linking the rare ranking factor you control end to end.