Internal linking: the SEO lever you fully control
Internal linking is the way the pages of a site connect to one another. It tells search engines which pages matter and channels the authority a site earns toward the pages that sell. It is the cheapest SEO lever on the market, because it cannot be bought: it depends on no third party, and every decision is made in-house.
- A site where everything sits one click from the home page has no hierarchy, and therefore no strong page.
- Internal links are the only authority signal you fully control.
- A commercial page linked from a single page on the site is an orphan page in practice.
- Buying external links before fixing your internal linking is like filling a leaky bucket.
- It is the only SEO project whose cost is internal time rather than a recurring budget.
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Internal linking
Internal linking is the set of links that connect the pages of a single site. It serves three functions. Letting search engines discover every page, and signalling which ones are most important through the number and origin of the links they receive. And passing on to those pages a share of the authority the site has earned. It differs from netlinking, which concerns links coming from third-party sites.
Build a hierarchy search engines can read
The case for this project, from a management standpoint, fits in one sentence: it is the only SEO lever you do not pay for as a recurring budget. It is fixed once, it depends on no outside supplier, and it raises the return on everything already invested in content. It is the first thing to fix before committing to anything else.
If you have already paid for content without your service pages benefiting from it, this is almost always where the value leaks. A site should be thought of like a store floor: what decides sales is not the amount of merchandise, it is what the customer sees first and the path you trace toward the counter.
The most common flaw on SME sites is the absence of hierarchy. Every page is reachable from the menu, none links to the others, and the site looks like a stack of loose sheets rather than a bound book.
To a search engine, this setup says nothing. If every page receives the same number of links from the same place, none stands out. The site has no strong page; it has thirty average ones. In practice, no page ranks on the terms that bring in customers, even though the content exists and was paid for.
The structure that works holds in three levels and is built around thematic clusters.
The cluster page
It covers a broad topic and serves as an entry point. It is linked from the menu and from the home page, and it links to every page in its group. It is the one meant to rank on the broadest and most competitive term.
The specialized pages
Each covers one aspect of the topic in depth. They all link back to their cluster page, and to two or three sibling pages when the link is justified by the content, not by placement.
The editorial content
Articles feed the group. Each links to the cluster page or to a specialized page, which channels the authority earned by the content up toward the commercial pages.
The direction of links matters as much as their number. An article that receives many links but sends none toward a commercial page accumulates authority without ever passing it where it pays off. It is an asset sitting idle on the balance sheet, when it could be carrying the pages that produce customers.
What to know before the call
It is the only SEO project whose cost is time rather than a monthly budget. It is settled in a few days on a mid-sized site, it depends on no link supplier, and it raises the return on all the content already paid for. That is why it should come before any other visibility spend.
- How many internal links point to our service pages, and from how many different pages?
- Do our articles link to a page that sells, or only to one another?
- How many clicks separate the home page from the pages that earn us the most?
- Was this project done before we bought external links, or after?
- How many days of work does it represent, and which pages do we start with?
A good answer gives a link count per destination page and proposes an order. An evasive answer talks about optimizing the link structure, about semantic silos, or proposes buying external links first.
Knowing whether your current structure is costing you sales, and which page to start with, is settled in a single meeting. A 90-minute consultation settles it on your actual site, with a written summary your team can execute.
Anchors that work, and those that do not
The anchor is the clickable text of a link. It is what tells the search engine what the destination page is about, and it is where most sites waste their internal linking. The word you choose costs nothing to change, which makes it the highest-return fix in all of SEO.
| Anchor | What it conveys | Verdict |
|---|---|---|
| Click here | Nothing | Avoid |
| Learn more | Nothing | Avoid |
| https://falia.co/en/seo/ | Nothing readable | Avoid |
| our page | Almost nothing | Weak |
| SEO agency | The exact topic | Effective |
| how to structure a catalogue for SEO | The topic and the intent | Effective |
Varying the anchors toward the same page is better than repeating the same wording everywhere. A site where forty links carry exactly the same anchor produces an artificial pattern, whereas the natural vocabulary of a topic is always varied.
Five distribution rules
None requires a production budget. They require a decision about which pages should pay off.
| Rule | Why |
|---|---|
| Three to six internal links per article | Beyond that, each link is worth less and the reader drops off before the page that sells |
| At least one link to a commercial page | Otherwise the content budget accumulates authority without ever converting it into sales |
| Never the same anchor twice on one page | Only the first link to a destination is counted |
| Links placed in the body, not only in the footer | A contextual link carries more than a navigation link |
| No important page more than three clicks from the home page | Depth reduces crawl frequency and the weight search engines assign |
Adding an automatically generated "related articles" block at the bottom of every page does not replace editorial internal linking. These links are identical everywhere, so they create no hierarchy. They help the reader, not the SEO. The editorial work still has to be done, and it is often already billed.
External links: what really matters
Links from other sites, what is called netlinking, form the slowest layer of SEO and the only one you do not control directly. It is also the most expensive, and the one where the most money is lost, because it is bought and what is bought gets overpriced.
Three principles keep you from committing a budget to it at the wrong time.
Relevance beats raw authority
A link from a recognized site in your sector is worth more than a link from a high-profile general site with no connection to your field. Generic directories pass on almost nothing, whatever their price.
Links bought in bulk are detectable
A link profile that appears within a few weeks from sites unrelated to one another forms a recognizable pattern. The risk is not only losing the spend, it is having to pay a second time to disavow them afterward.
The best link generator is content no one else can produce
A proprietary data set, a named method, a documented case. It is slower than buying, and it is the only approach that compounds instead of depreciating.
Chasing external links before fixing your internal linking is like pouring water into a leaky bucket.
Falia analysis gridThis is one of the rare projects you can keep in-house with no loss, on one condition: that someone holds the plan. The act itself, placing a link with the right anchor in the right spot, mostly calls for knowing the catalogue and the vocabulary of the trade. What can be delegated is the initial analysis. Listing the orphan pages, measuring the real click depth, spotting the pages that receive authority without ever passing it on: all of that calls for a crawling tool and a reading no one does by hand beyond fifty pages.
Diagnose your internal linking in three checks
No sophisticated tool is needed to spot the most costly problems. The three checks below take an hour and are enough to decide whether the project is worth the time it demands.
First check. List your five most commercially important pages, then count how many pages on the site point to each one. If a commercial page is linked only from the menu, it is an orphan in practice.
Second check. Take your ten most visited articles and confirm they all link to at least one commercial page. It is the most frequent leak and the cheapest to plug in all of SEO.
Third check. Count the number of clicks needed from the home page to reach your important pages. Beyond three, the page is crawled less often and perceived as secondary.
Quick check
Where internal linking fits within SEO as a whole is described in the complete guide to search. Crawling and indexing questions are covered in the technical checks to run on a site, and the case of large catalogues in crawl budget and faceted navigation.
A site's internal structure is one lever of the Attract customers with SEO and AI goal.
Already running a marketing team? See how we plug in as reinforcement on organic search.
Frequently asked questions about internal linking
What is internal linking?
It is the set of links that connect the pages of a single site. It lets search engines discover the pages, signals which ones are most important, and passes a share of the site's authority to them. It differs from netlinking, which concerns links coming from third-party sites.
How many internal links should there be per page?
Three to six in a standard-length article. Beyond that, each link passes a weaker share of the signal and the reading experience degrades. What matters more is that at least one of those links points to a commercial page.
Which link anchor should you use?
A descriptive text that says what the destination page is about. Anchors of the "click here" or "learn more" type convey no information. It is better to vary the wording toward the same page than to repeat the same anchor everywhere.
Should you buy backlinks?
It is risky and often ineffective. A link profile that appeared within a few weeks from sites unrelated to one another forms a recognizable pattern. A relevant link from a site in your sector is worth more than ten generic links.
Is an automatic related-articles block enough?
No. These links are identical on every page, so they create no hierarchy. They improve the reader's navigation but do not tell search engines which pages matter. Editorial internal linking is still necessary.
How do you know if a page is orphaned?
By counting the number of pages on the site that point to it. A page linked only from the navigation menu is an orphan in practice: it receives no contextual signal indicating its relative importance.
- Google Search Central, Make your links crawlable, accessed July 2026.
- Google Search Central, Spam policies, links section, accessed July 2026.
- Google Search Central, SEO Starter Guide, accessed July 2026.
- Depth and link-density thresholds: Falia working framework, revised in July 2026.
Geneviève puts the strategy for your engagement into action. She leads all our web development projects: Shopify, WordPress and the new ways of building a site with AI. She manages our team of developers and translates your business needs into technical language. She runs your organic search (SEO), your visibility in AI answers (GEO) and your site's conversion rate optimization (CRO). Her work is at the heart of three goals: Attract customers with SEO and AI, Improve your site's conversion, and Strengthen your visibility in AI answers. With Gabriel, she also builds the landing pages for your advertising campaigns. She writes mainly about SEO, AI visibility and web design.
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