Internal linking strategy and site structure: how to connect pages so search engines understand them

Search engines don’t see your website as a menu. They see pages joined by links, and work out what each page is about, and which pages matter most, from where those links point and what they say. An internal linking strategy means making those decisions on purpose instead of letting them pile up.

Most growing websites never do. Articles link to whatever the writer remembers, the service pages that bring in revenue sit three levels down, and tag archives collect more links than any service. The site ends up telling search engines the wrong story about itself.

This guide covers site structure, linking rules, topic clusters and an audit you can run with free tools. Menu design has its own guide: website navigation design.

The short answer

A good internal linking strategy comes down to five rules:

1. Keep important pages close to the home page: key services and section hubs one or two clicks away.
2. Make the hierarchy visible in URL folders, navigation and breadcrumbs.
3. Use descriptive anchor text that says what the linked page is about.
4. Leave no orphan pages: every page you care about gets a link from a relevant page.
5. Link up to hubs and across to siblings, and in a topic cluster, between the pillar, its articles and the service page they support.

Check it once or twice a year with a crawler and the Links report in Google Search Console.

How search engines read site structure

Internal links do three jobs for a search engine.

Discovery. Google says it primarily finds pages through links from pages it has already crawled. Its link best practices add that it can only crawl a link that is an <a> element with an href attribute, so menus built purely with scripts may lead nowhere. An XML sitemap adds a second route in, but says nothing about how pages relate. The technical SEO checklist covers crawling in full.

Importance. Google says it uses links as a signal when judging how relevant pages are. A page linked from the menu and a dozen related pages is plainly one the site stands behind; one buried on page 14 of a blog archive isn’t.

Meaning. Anchor text (the clickable words) and the sentence around it tell search engines what the destination is about. For an image link, Google uses the image’s alt text as the anchor text.

Five layers, one message

Structure is signalled in five places, and reads most clearly when they agree.

Plan the hierarchy before the links

Links fall into place once the hierarchy is clear. Most business websites need three levels: the home page, section hubs, and the pages inside each section. Picture a construction company:

• Home
  • Services (hub): factory construction, warehouse fit-out, design and build
  • Projects (hub): one page per project
  • Guides (hub): topic hubs such as “Planning a factory build”, each with its articles
  • About and Contact

Each hub is a real page with its own introduction, linking down to every page in its section. Linking everything from the home page would also shorten paths, but then nothing looks more important than anything else.

How deep is too deep?

There’s no official click limit. Aim to keep money pages (services, key products, contact) and hubs within one or two clicks of the home page, and every page you want indexed within three or four. Deeper pages tend to be discovered later and crawled less often.

Depth usually comes from paginated archives (last year’s article may be fifteen clicks away), nested subcategories, and pages reachable only through search or filters.

URL structure: let the address explain the page

A good URL tells people and search engines where a page sits before anyone clicks. Google’s URL structure guidance recommends readable words rather than long ID numbers, separated by hyphens rather than underscores. Beyond that:

• Use a few shallow folders, only for groups that won’t change, such as /services/. If an article might move category, keep the category out of its address.
• Leave out dates, IDs and parameters on evergreen pages.
• Give each language its own URLs, as the multilingual SEO guide explains.

Treat URLs as permanent. Every change needs a 301 redirect and updated internal links, which is why the website migration SEO checklist is built on an inventory of every existing URL.

Navigation and breadcrumbs: the site-wide signals

The header menu appears on every page, so it’s the loudest statement of what matters: put hubs and key services there, not every page. The footer is a safety net for contact details, key services and legal pages, not a second sitemap stuffed with keywords.

Breadcrumbs (Home › Services › Warehouse fit-out) show where a deep page sits and link it to its parent. Show every visitor the same trail, not the pages they happened to click through. Google’s breadcrumb documentation recommends a trail representing a typical path to the page, which needn’t mirror the URL, and explains the BreadcrumbList markup that describes it to search engines. Schema markup for business websites covers where else structured data helps.

Rules for an internal linking strategy that holds up

Write anchor text that describes the destination

Google advises anchor text that is descriptive, reasonably concise and relevant both to the page it sits on and to the page it links to.

• Weak: “To find out more about our fit-outs, click here.”
• Better: “Our warehouse fit-out service covers everything from survey to handover”, linked on “warehouse fit-out service”.

Vary the wording rather than repeating one exact keyword on every link, but let one phrase mean one page: if “factory construction” links to the service page in one article and to a blog post in another, you’re telling search engines both are the answer.

Link up, across and down

• Up to the hub or pillar, and to the service the page supports.
• Across to siblings that answer the reader’s next question.
• Down from every hub to each page in its section.

Other rules worth keeping

• There’s no magic number of links. If you can’t say why a reader would click, cut the link.
• Point links at the final address. Links to redirected or deleted pages waste crawling and slow visitors; update them after a redesign.
• Don’t nofollow your own pages. Google says nofollow is for links you’d rather it didn’t associate with your site. To keep a page out of search results, add noindex to the page itself.
• Treat automated links as a supplement. “Related posts” widgets usually pick pages by shared tags, not by what the reader needs next.

Orphan pages: how they happen and how to find them

An orphan page has no internal links pointing to it. Visitors can’t browse to it, and even if Google finds it through your sitemap, it gets no context from the rest of the site.

Orphans come from routine work: campaign pages, pages dropped from the menu in a redesign but left live, articles whose only links came from a deleted page, and unlinked language versions.

How to find them. Compare three lists:

1. The URLs a crawler finds by following links from the home page.
2. The URLs in your XML sitemap.
3. The URLs that get visits or impressions: GA4’s Landing page report and the Pages tab of Search Console’s Performance report.

Anything in list 2 or 3 but not in list 1 is an orphan. Then decide:

• Worth ranking? Link to it from its hub and two or three related pages.
• Campaign only? Keep it out of the navigation, but decide whether it should be indexed.
• Outdated? Redirect it to the closest current page, or remove it and drop it from the sitemap.

Topic clusters: how pillar pages and articles should link

A topic cluster is a pillar page that covers a subject broadly, plus supporting articles that each answer one question in depth. Linked well, it shows how thoroughly you cover the subject and gives readers a clear next step. Linked badly, it’s a pile of posts competing for the same searches.

The linking pattern that works:

1. Pillar to every article, from the section where each one fits, not only from a list at the end.
2. Every article back to the pillar, with anchor text naming the broad topic.
3. Article to article only where one leads to the other.
4. Pillar and articles to the service page the cluster supports, where a reader would be ready for it.
5. Service page to the pillar and a few key articles, so buyers can answer their questions.

For the construction company, the pillar “Planning a factory build” links to articles on permits, site selection and contracting models, and each links back up and on to the design-and-build service. This article belongs to a cluster like that, under the SEO-friendly website guide, listed in full on the SEO topic page.

Two pitfalls to avoid

Pages competing with each other. Give every page its own primary keyword. If the pillar and an article target the same search, they compete, and often neither ranks as well as one clear page would. Keyword research and search intent shows how to spot this in Search Console and whether to merge, redirect or re-angle.

Articles competing with the service page. Keep the commercial search for the service page, and link to it from articles using that phrase. How to write a service page covers the page on the receiving end.

A simple internal link audit

You need a crawler and Google Search Console. At the time of writing, Screaming Frog SEO Spider’s free version crawls up to 500 URLs, enough for many smaller business websites; Sitebulb and similar tools also work.

1. List your most important pages: the ten or so that bring in enquiries.
2. Crawl the site and note each one’s click depth and internal link count.
3. Open Search Console’s Links report and read Top linked pages under Internal links. Menu and footer pages naturally sit near the top, but if tag archives or old posts outrank your services, the structure is saying the wrong thing.
4. Read the anchor text pointing to each key page: look for “read more”, empty anchors and one phrase pointing to several pages.
5. Fix links that hit redirects or errors at the source.
6. Find orphans with the three-list comparison above.
7. Fix in order of impact (broken links, then key-page depth, orphans and anchors), then crawl again.

Repeat the audit once or twice a year, when you add a section, and around any redesign or migration.

When better links can’t fix the structure

Most internal linking problems are cheap to fix: new links, clearer anchors, a missing hub page. But if your services are scattered across URLs that mean nothing, the menu has grown for years and half the site is orphaned, you’re patching a structure that was never planned.

That’s when a website redesign earns its cost. The new sitemap is part of the written proposal you approve before anything is built; we keep what already works and redirect every old URL, so visitors and search engines can follow the move. Not sure which side of the line you’re on? A free website audit includes a look at your Google visibility: a useful first read on whether you need better links or a new structure.