Does site structure really matter more than URL depth?

What does 'site structure' really mean according to Google?

When Johannes Müller talks about site structure, he refers to internal linking and how pages relate to each other — not just the visible hierarchy in URLs. Google analyzes how internal PageRank circulates through links to determine which pages are important.

A strategically linked page from the homepage or from several high-level pages receives a strong relevance signal. Conversely, a page that is technically 'close' in the hierarchy but lacking internal links will remain marginalized. URL depth (/category/subcategory/product/) is merely a cosmetic indicator if the linking does not follow.

Why is the number of subdirectories considered secondary?

Google does not count slashes in a URL to assess a page's priority. This myth of 'maximum 3 levels' has lingered for years, but it's the distance in clicks from strong pages that matters. A crawler like Googlebot follows links — it doesn't care if a URL has 5 or 10 segments.

The obsession with flat URLs often results in illogical architectures where everything artificially points back to the root. The outcome: loss of semantic context and thematic dilution. It's better to have a coherent hierarchy with 4 well-connected levels than a flat site where no one can find their way.

What do we mean by 'internal links from main pages'?

Main pages are those that accumulate the most internal and external PageRank: homepage, strategic category pages, often-linked pillar content. Structuring links from these critical points is about distributing link juice where it counts.

A link from the homepage to a strategic landing page is worth infinitely more than a link buried in the footer of an orphaned page. The link context (anchor, semantic environment, position on the page) further strengthens this signal. Google reads the navigation context to understand the real hierarchy of the site.

• Structuring internal links from strong pages improves the crawl and ranking of target pages.
• Click depth (number of clicks from the homepage) matters more than URL depth.
• A smart contextual linking strategy beats a flat but incoherent URL hierarchy.
• Internal PageRank circulates better when strategic pages are logically linked to each other.
• Avoid orphan pages — even with a short URL, they remain invisible without incoming links.

Is this statement consistent with field observations?

Absolutely. On e-commerce sites or complex media, it is often observed that pages buried 5 levels deep in URLs but linked from the homepage through a menu or editorial block perform better than 2-level pages that are isolated. PageRank follows links, not URL segments.

However, beware of the trap: this statement does not claim that URL hierarchy is totally useless. A logical structure facilitates understanding for both humans and machines, improves breadcrumbs, and other elements Google also uses for context. The mistake would be to conclude that one can structure anything as long as linking is done well.

What nuances should we consider to avoid misunderstandings?

Müller does not say ‘ignore hierarchy’. He states that the number of subdirectories is not the decisive criterion. An important nuance: a coherent hierarchy strengthens natural linking. If your categories are clear, your internal links will naturally follow a thematic logic.

Additionally, [To verify]: Google never specifies exactly how many clicks it tolerates before considering a page secondary. Empirically, we know that beyond 3-4 clicks, the risk of lazy crawling increases, but no official numeric limit exists. It also depends on the crawl budget allocated to the site.

In what cases could this rule be misapplied?

Some SEOs overcrowd the homepage with links to all strategic pages, creating a monolithic footer or a sprawling menu. A classic mistake: diluting PageRank by linking everything from everywhere. It's better to prioritize contextual links in the content, targeted editorial blocks, and a logical silo structure.

Another problematic case: sites where the URL hierarchy is so flat that it loses all semantic value. Example: /product-123 instead of /clothing/men/shirts/product-123. Google can understand, but it complicates the crawler's work and reduces contextualization opportunities through enriched breadcrumbs.

What actions should be taken to optimize internal structure?

Start with an internal linking audit: identify your strategic pages (conversions, traffic, pillar themes) and check how many clicks separate them from the homepage. Use Screaming Frog or Oncrawl to map out the actual click depth. If critical pages are 5+ clicks away, it’s a warning sign.

Then, strengthen links from strong pages. Homepage, key categories, pillar articles: these are your PageRank redistributors. Integrate editorial blocks, contextual links within the text body, and strategic menus. Avoid a generic footer where everything mixes — prioritize thematic relevance.

What common mistakes should be absolutely avoided?

Do not multiply unnecessary hierarchy levels just to 'look neat'. If /blog/category/subcategory/article adds no navigational value, simplify it to /blog/article. However, keep /blog/ if it logically structures your content.

Also, avoid creating orphan pages — even if well-positioned in the URL. A page without an internal link is invisible to Google, regardless of its path. Regularly monitor in Search Console for indexed pages that have never been crawled or have zero incoming internal links.

How can I check if my site is properly structured?

Run a complete crawl with a tool like Screaming Frog in ‘spider’ mode. Export the click depth ('Depth') and cross-reference it with your strategic pages. If your landing pages are 4+ clicks away, reorganize. Also check the number of internal links pointing to each page — priorities should receive more links.

In Google Search Console, analyze the coverage and performance reports. Pages that are discovered but never indexed often reveal a linking problem. Cross-reference with Analytics to identify high-potential but underperforming pages — often a symptom of poor distribution of internal PageRank.

• Audit the click depth of all strategic pages (goal: max 3 clicks from the homepage).
• Strengthen internal linking from high PageRank pages to priority content.
• Remove or redirect unnecessary hierarchy levels that provide no semantic value.
• Regularly check for orphan pages (indexed but without an internal link) and reintegrate them into the linking structure.
• Favor contextual links within the content over overloaded footers or sprawling menus.
• Use breadcrumbs and enriched breadcrumbs to reinforce Google’s understanding of the hierarchy.