Before discussing methodology, the issue of the site structure deserves attention. Exploring all categories and pages of a website is not just about clicking through a menu. It involves understanding how the content is interconnected, identifying those that escape traditional navigation, and ensuring that nothing remains invisible to search engines.
On a large site with dozens of nested sections, obtaining a clear view of what actually exists online requires a structured approach.
XML Sitemap and robots.txt: the first two files to check
When wanting to take a complete inventory of a site, the most effective reflex is to consult its technical files directly. The XML sitemap lists the URLs that the site owner wants indexed. It is usually accessed by adding /sitemap.xml to the root of the domain.
The robots.txt file indicates to crawlers what they are not allowed to explore. These two files complement each other: the first shows what should be visible, while the second reveals what is deliberately hidden. By cross-referencing them, one obtains a quick mapping of the site’s structure, much more reliable than manual navigation.
To observe a concrete example of a sitemap organized by categories, you can check the Little Breizh site and see how each section clearly appears in the hierarchy. This type of presentation facilitates understanding of the overall architecture, even for a modest site.
Faceted Navigation and Orphan Pages: What the Menu Doesn’t Show
The main menu of a site rarely displays all its pages. On an e-commerce site with filters by size, color, or price, faceted navigation generates hundreds of combined URLs that do not appear in any visible category. These pages exist, consume crawl budget, but often remain absent from the sitemap.
Orphan pages pose a symmetrical problem. No internal links point to them. They are neither in the menu nor in the site’s linking structure. To uncover them, one must compare the list of known URLs (sitemap, crawl) with the URLs actually linked from other pages.
In practice, a crawl is initiated using a tool like Screaming Frog or Xenu, and then the results are compared to the XML sitemap. URLs present in the crawl but absent from the sitemap, or vice versa, warrant manual verification. This is often where abandoned content, old promotions, or test pages that were never deleted are found.
Google Search Operators for Mapping a Site
Before installing any software, a Google query is enough to get a first overview. The operator site:domainname.fr displays all the pages indexed by Google for that domain. You can refine with filters:
- site:example.fr inurl:blog – to isolate only the blog pages and check their actual volume in the index
- site:example.fr intitle:”category” – to find pages whose title contains a specific term, useful when the site’s hierarchy is not very readable
- site:example.fr -inurl:tag – to exclude tag pages, which are often redundant, and focus on the main content
This method has a limitation: Google only indexes a fraction of the existing pages. The results provide a floor, not a comprehensive inventory. For large sites, there is often a significant discrepancy between the number of pages in the sitemap and those displayed by the site: operator.
Crawl Budget and AI Robots: New Pressure on Exploration
The arrival of artificial intelligence crawlers changes the game for site exploration. Several analyses published in 2025-2026 show that the volume of requests from these robots has significantly increased, with some agents seeing their traffic multiply dramatically in a year. This additional pressure on servers forces administrators to rethink their crawl budget management.
Specifically, a site that leaves its facets and duplicate URLs accessible without restriction risks having robots waste their crawl on low-value pages, to the detriment of strategic categories and content. Consolidating URLs (canonical, redirects, limiting parameters) becomes a direct lever to ensure that all useful pages are effectively crawled.
Google specifies that optimizing crawl budget mainly concerns very large sites, but in practice, e-commerce sites with high faceted navigation are the first affected. Proper use of HTTP statuses (304 for unchanged pages, for example) also signals to robots that a page has not changed, freeing up budget to explore new content.
Hierarchy and Internal Linking: Building a Logical Exploration
Exploring a site is not just about listing URLs. The way pages are linked to each other determines what a visitor (or a robot) can actually reach. A well-thought-out internal linking structure ensures that every category and important page is no more than three clicks away from the homepage.
To check the depth of the hierarchy, one can use a crawler that measures the number of levels between the homepage and each URL. Pages located beyond the fourth level are often poorly indexed and rarely visited. Here are the points to watch:
- Main categories should be accessible from the global navigation menu, not just from a footer or a contextual link
- Each content page should receive at least one internal link from another page of the same theme, to avoid the orphan page effect
- Internal links should use descriptive anchors containing the terms of the targeted category, which helps both users and search engines
Feedback varies on this point, but most SEO audits show that a flat hierarchy (few levels, many horizontal links between categories) facilitates both user navigation and crawling by robots.
The most effective approach remains to combine these methods: sitemap file for the overview, Google operators for a first diagnosis, technical crawl for precision, and analysis of internal linking to understand the navigation logic. A site where all pages are accessible and properly linked never poses exploration problems, neither for its visitors nor for search engines.
