Internal linking

Internal links connect pages on the same domain: menus, footer links, breadcrumbs and links inside the text of a page. They differ from backlinks, which come from other sites. You fully control internal links, which makes them one of the easiest SEO improvements to make.

The most useful internal links are often the contextual ones in the body of a page, because they connect related ideas. A menu link tells a search engine a page exists; a link from a relevant paragraph tells it what the page is about and why it matters.

How it works

Search engine crawlers move through a site by following links. A page with no internal links pointing to it, an orphan page, may be found only through a sitemap and is likely to be treated as unimportant. Pages linked from the home page and from many related pages are discovered faster and are understood to be central.

The anchor text of each internal link describes the target. Grouping related pages and linking them to each other and to a main hub page shows search engines that the site covers a topic in depth, which supports topical authority. Navigation links appear on every page, so they say little about any one page; links within the body text say much more. Linking from a page that already has links from other sites passes some of its strength to the page it links to, which is a practical way to lift a new service page.

Structure matters as much as individual links. Pages that are many clicks away from the home page tend to be crawled less often and treated as less important. A shallow structure, where key service pages are one or two clicks from the home page and linked from relevant articles, makes priorities clear. Breadcrumbs, which show where a page sits in the site, add another set of consistent internal links with descriptive text.

Example

A law firm has ten articles about tenancy law, none linking to its tenancy services page or to each other. It adds a short related-reading section to each article, links key phrases to the service page and links the service page back to the most useful guides. Readers now move from questions to the service, and the service page gains visibility.

The firm can check the result itself. Search Console's Links report includes a list of internal links showing how many links each page receives; the tenancy page has moved from near the bottom to near the top. A free site crawler can list orphan pages and pages that link to redirects or errors. Rechecking after each new article keeps the structure from drifting again.

Why it matters for your business

Internal links cost nothing but time and directly influence which pages get found, ranked and read. They also move visitors from informational content towards the pages that bring enquiries. The trade-off is upkeep: as pages are removed or renamed, links must be updated, or they turn into broken links and redirect chains. For most small sites, an hour spent linking existing articles to the matching service pages is a better investment than writing another article.

Common mistakes

• Leaving new pages orphaned, with no links from anywhere else on the site.
• Linking with vague text such as "click here" instead of descriptive words.
• Adding dozens of links to every page so none of them stands out.
• Forgetting to update internal links after a page moves, leaving them pointing at redirects or errors.

Questions people ask

How many internal links should a page have?

There is no fixed number. Link where it genuinely helps the reader take the next step or understand a related idea. A typical article might link to a handful of related pages in its text, plus navigation. If links stop being useful to a reader, there are too many.

Do internal links help SEO?

Yes. They help search engines discover pages, understand how topics relate and judge which pages are most important on your site. They also keep visitors moving to relevant content. Unlike backlinks, you control them completely, so they are one of the quickest improvements to make.

What is an orphan page?

An orphan page is a page on your site that no other page links to. Visitors can only reach it through search, a sitemap or a direct link, and search engines may treat it as low priority. Fix it by linking to it from relevant pages, or remove it if it is no longer needed.