Internal linking explained for people who edit websites

If you edit pages on a website, internal linking is simply the practice of linking from one page on your site to another page on the same site. That includes links from a service page to a related guide, from a blog post to a glossary page, or from a category page to the items within it. When people ask what internal linking is in SEO, that is the core answer.

The useful part is not the definition, it is the job those links do. Internal links help people move around your site, help search engines discover pages and help both humans and crawlers understand which pages belong together. Good internal linking is usually plain, relevant and intentional. It is not a trick, and it is not a substitute for useful content.

What internal linking is and what it is not

An internal link points from one URL on your website to another URL on the same website. If a page on example.co.uk links to another page on example.co.uk, that is an internal link.

That is different from an external backlink. A backlink usually means a link from another website to yours. If a trade body, newspaper or supplier links to your page, that is not internal linking. It may matter for search visibility, but it is a different thing and should not be mixed up with site structure work.

It is also worth separating internal links from navigation elements, because people often use the terms loosely. Main menus, footer links, breadcrumbs and related article widgets are all made of internal links, but they do not all do the same job.

A few practical distinctions help:

• Main navigation exists to help people reach key sections quickly.
• Breadcrumbs show position within a hierarchy.
• Contextual links appear inside the main body copy and connect one page to another because the subject naturally calls for it.
• Footer links often repeat important routes, but can become cluttered if they try to do too much.

Why does that distinction matter? Because not all internal links send the same signal about relevance and importance. A link in the middle of a paragraph that says “see our guide to choosing page titles” carries clearer context than a generic footer link that says “read more”. Google’s own guidance recommends descriptive anchor text and a site structure that helps discovery and understanding (Google SEO Starter Guide).

There is another common confusion. Internal linking is not the same as simply having every page in the sitemap. An XML sitemap can help search engines find URLs, but it does not replace sensible links between related pages. A page that appears only in a sitemap and nowhere else on the site is still hard for users to find and often weakly integrated into the site’s topic structure.

So when we explain internal linking at The SEO Blog, we mean the web of links inside your own site, especially the ones that help users and crawlers move between genuinely related pages.

Why internal links matter for users and search engines

For users, internal links make a site easier to use. They answer the next question at the moment it arises.

If someone lands on a page about local search and then wants to understand cost, a sensible editorial link to what small business SEO costs in the UK and what to check is helpful. It reduces friction. The reader does not have to return to a menu, use site search or guess which article to open next.

For search engines, internal links support three broad jobs.

First, discovery. Search engines follow links to find pages. Google says links are one of the ways it discovers content, alongside sitemaps and other signals (Google SEO Starter Guide). If an important page has no internal links pointing to it, it may be harder to find and revisit.

Second, context. The words used in anchor text, and the pages surrounding the link, help search engines understand what the destination page is about. This is not magic. It is simply clearer when a page about title tags is linked with a phrase such as whether your page title matches what the page actually says than with “click here”.

Third, site structure. Internal links show relationships between sections, subtopics and key pages. A strong structure makes it easier to infer which pages are broad guides, which are detailed subpages and which are supporting examples.

That much is established guidance. What needs more care is the leap from “better discovery and understanding” to “higher rankings”. Internal links can contribute to better SEO because they help search engines crawl and interpret a site more effectively. But Google does not promise rankings because you changed your linking, and it does not publish a formula that says a certain number of contextual links will produce a certain result (Google SEO Starter Guide).

For editors, the practical takeaway is simple. Internal links matter because they improve navigation and comprehension first. SEO benefit follows from that structure, not from stuffing links into copy.

This also matters beyond classic blue link search. If you are thinking about AI search, the same fundamentals still apply on Google’s side. Google states that existing search fundamentals apply to its AI features, and no special AI schema or text file is required (Google AI features). For OpenAI, crawler access and training controls are separate questions, and OAI-SearchBot is not the same thing as GPTBot (OpenAI crawler documentation). Internal linking can make pages easier to discover and understand, but a crawler visit is not the same as a citation, and a citation is not the same as a click or an enquiry.

What good internal linking looks like in practice

Good internal linking usually looks unremarkable. That is a compliment. It feels like part of editing, not a bolt-on SEO exercise.

Start with anchor text. Good anchors are descriptive enough that a reader can predict what they will get after clicking. They do not need to be long, and they do not need to match a search term exactly. They just need to make sense.

Better examples:

• our guide to local search for UK firms
• how to investigate a drop in search traffic
• page title checks for editors

Weaker examples:

• click here
• read more
• services
• article

Next, link pages that have a real relationship. A guide to local search should link to a deeper explanation of relevance and business location, not to an unrelated article just because you want to push traffic somewhere. If the connection would feel odd in print, it is probably a poor internal link online too.

A sensible hierarchy often includes these page relationships:

• Home page to core sections
• Core section pages to their main subtopics
• Subtopic pages back to the parent section where useful
• Blog posts to relevant evergreen guides
• Evergreen guides to supporting examples, definitions or checklists
• Service pages to explanatory content that helps a buyer understand the subject
• Contact or enquiry pages from pages where user intent naturally becomes commercial

For many UK business sites, some common patterns work well:

• A service page links to a pricing or process explainer
• A location page links to the relevant service page
• A beginner guide links to more detailed articles
• Articles link back to the main topic hub
• Case studies, if you have them, link to the service or problem they illustrate

What matters is not the pattern by itself, but whether the reader benefits.

There is also a placement question. Contextual links inside the main content are often the clearest way to connect related information. Menus and footers are still useful, but they are broad tools. If every important connection is left to the menu alone, the site may be navigable without being especially informative.

A practical editorial rule we use is this: every page should answer, “what should the reader read next?” If the page cannot answer that, it often needs at least one well-chosen internal link.

If you are building topic clusters or content hubs, keep them grounded. A hub page should genuinely summarise a topic and route readers to the right child pages. It should not just be a list of keyword variations. Our own content and measurement guide exists for that reason, to connect related ideas in a way a reader can actually use.

How to spot internal linking problems on your site

You do not need an enterprise crawler to find the obvious problems, though one can help on larger sites. Start with four checks.

1. Look for orphan pages

An orphan page is a page with no internal links pointing to it from other indexable pages on the site. It may still exist in a sitemap or receive traffic from elsewhere, but it is disconnected from normal browsing.

How to check:

• Export a list of URLs from your CMS or sitemap.
• Crawl the site with a tool that reports inlinks, if you have one.
• Compare the two lists.
• Flag pages with zero internal inlinks.

What the result means:

• If the page should be found and used, add links from relevant parent or related pages.
• If the page is old, redundant or intentionally isolated, decide whether it should remain published at all.

In Google Search Console, a page may appear as discovered or crawled in various states, but Search Console will not directly label a page “orphan” for you. It is still useful for checking whether important URLs are indexed and whether excluded URLs have a stated reason. Google’s Page indexing report explains that excluded does not always mean there is a problem, and the reason matters (Google Page indexing report).

2. Check anchor text quality

Pick a sample of important pages and review the links pointing to them.

Questions to ask:

• Do the anchors tell a user what the destination is about?
• Are multiple links using vague wording such as “learn more”?
• Are different pages being linked with near-identical anchors, making them hard to distinguish?

What the result means:

• If anchors are vague, rewrite them in plain English.
• If anchors overstate or mislead, bring them back in line with the destination content.
• If several pages target very similar ideas, you may have a content overlap problem as well as a linking problem.

3. Find overlinked pages

Some pages contain so many links that none of them stands out. This often happens in footers, tag pages, archive pages and long “resources” pages that were never edited down.

How to check:

• Review your templates, especially footers and sidebars.
• Look at pages with very long lists of links.
• Ask whether each link helps a user complete a task or understand the topic.

What the result means:

• Too many links can dilute attention and create noise.
• Trim repeated or low-value links.
• Keep navigational patterns consistent, but do not keep every historical section alive forever if nobody needs it.

There is no single official threshold that says a page has too many internal links. This is an editorial judgement. If the page feels crowded, repetitive or difficult to scan, that is enough reason to simplify it.

4. Check click depth to important pages

Important pages should not be buried so deeply that users and crawlers struggle to reach them through normal paths.

How to check:

• Starting from the home page, count how many clicks it takes to reach key pages.
• Repeat from the main navigation and relevant section pages.
• Look for pages that are technically live but practically hidden.

What the result means:

• If a core page takes too many steps to reach, add a stronger route from parent pages, hubs or related articles.
• If the page is only linked from old posts, it may need a place in current navigation or newer content.

Google does not publish a universal “maximum click depth” rule, so treat this as a usability and discoverability check, not a mythic ranking factor. The point is to avoid burying important content.

While you are in Google Search Console, review performance and indexing with care. A page having impressions does not prove your internal linking is good. A page being indexed does not prove users can find it. If you need a structured way to interpret changes, our guide on how to investigate a change in search performance sets out the evidence trail to follow.

What internal linking can improve and what remains uncertain

Internal linking can clearly improve a few things.

It can improve navigation for users. That is visible in the page itself, and often obvious in user testing.

It can improve page discovery for crawlers, because links are one of the mechanisms search engines use to find content (Google SEO Starter Guide).

It can improve topical understanding, because descriptive anchors and coherent site structure provide context.

It can also help editors manage content better. Once you think in terms of parent pages, child pages and related articles, gaps and duplication become easier to spot.

What remains uncertain is the size of the downstream effect on rankings, conversions and AI citations.

Rankings first. Internal linking is part of technical and editorial hygiene. It can support better crawling and clearer signals, but there is no guaranteed ranking uplift from adding links, and no honest editor should promise one.

Conversions next. Better navigation can make it easier for users to reach the page they need. That may help enquiries or sales in some cases. But if conversions improve, internal linking is only one possible cause among many, alongside offer quality, page clarity, speed, trust signals and demand.

AI citations are even less certain. A well-linked site may be easier for systems to crawl and interpret, but that does not mean a page will be cited by Google AI features or by tools that use OAI-SearchBot. It certainly does not mean GPTBot training access and search access are the same decision. They are separate controls in OpenAI’s documentation (OpenAI crawler documentation). If you want the wider context, see our piece on AI search citations and their limits.

Finally, internal linking cannot rescue weak pages. If the destination page is thin, confusing or mismatched to the promise of the anchor text, more links will not solve the underlying problem. The page still needs to be worth visiting.

So, if you came here asking what internal linking is in SEO, the practical answer is this. It is the way we connect pages within our own site so that people and search engines can find, understand and move between them. The best internal linking is not clever. It is accurate, useful and easy to maintain. That is why it belongs in everyday website editing, not just in technical audits.