A sitemap is not just an XML file placed at the root of a server. It is a lever for managing crawl, a diagnostic tool, and for visitors, a shortcut to deep pages that the main navigation may not always expose. Here, we address the concrete mechanisms that transform a passive sitemap into an effective navigation instrument.
Segmentation of sitemaps by content type: managing crawl with precision
A single sitemap that groups all the URLs of a site poses a readability problem, both for bots and technical teams. The recommended practice is to segment sitemaps by content type: product pages, editorial articles, local pages, landing pages. This separation allows for immediate identification of which segment has indexing anomalies.
On an e-commerce site with thousands of references, a dedicated sitemap for product sheets makes it easier to spot orphan URLs or pages returning a 404 code. A second sitemap reserved for editorial content allows for checking the rate of discovery of new articles by Googlebot.
We recommend declaring each segmented sitemap in an index file (sitemap index) referenced in the robots.txt. This setup provides a granular view in the Search Console: indexing rate by segment, specific errors, latest crawl dates. Without this segmentation, diagnosis relies on aggregated data that is not very actionable.
A concrete example of coherent structuring can be found on the Absolutis sitemap, which organizes its URLs by thematic categories rather than by chronological order of addition.
INP and navigation: why menu responsiveness conditions the user experience
INP (Interaction to Next Paint) has replaced FID in the Core Web Vitals since 2024. This change has direct consequences on the design of navigation menus. FID only measured the delay before the first interaction. INP evaluates the responsiveness of all interactions during the session, including opening a mega-menu, deploying a mobile navigation panel, or clicking on an internal link.
A menu rich in subcategories that takes more than 200 milliseconds to display degrades the INP score of the page. On mobile, the problem worsens: animated side panels in heavy JavaScript create noticeable delays that discourage exploration.
Test on real-world data, not in the lab
Lab tools (Lighthouse, PageSpeed in simulated mode) do not capture the real browsing conditions. CrUX data from the Search Console reflects the performance experienced by real visitors. A menu may appear smooth on a development machine but prove slow on a low-end smartphone connected via 4G.
- Check the INP score page by page in the Core Web Vitals report of the Search Console, filtering for mobile
- Identify slow interactions via the Performance tab in Chrome DevTools (recording on a real device or CPU throttling)
- Reduce the JavaScript weight of menu components: prefer CSS transitions to JS animations for openings and closings
A well-structured HTML sitemap serves as a lightweight navigation alternative when the main menu suffers from responsiveness issues. Visitors familiar with this page use it as a direct index.
Crawl budget and poorly maintained sitemaps: the cost of low-value URLs
Google reminds in its recent documentation that crawl budget is only truly critical for very large sites. A site with a few hundred pages does not need to worry about it. However, as soon as the volume of URLs exceeds several tens of thousands, a sitemap containing redirected pages, error pages, or duplicate content wastes the bot’s visits on uninteresting resources.
We regularly observe sitemaps that still reference URLs deleted months ago. Each visit by Googlebot to a 404 listed in the sitemap is a lost crawl that could have been used to discover a fresh page or reassess a strategic page.
Concrete maintenance of a clean sitemap
- Automate sitemap generation to exclude URLs in 301, 302, 404, and 410
- Remove canonicalized URLs pointing to another page: only the canonical URL should appear in the sitemap
- Update the lastmod tag only when the content of the page actually changes, not with every rebuild of the site
- Audit the sitemap quarterly by cross-referencing the listed URLs with server logs to identify pages never crawled
HTML sitemap and user journey: a complement to the main menu
The XML sitemap is for bots. The HTML sitemap is for visitors. Both serve distinct functions, and one does not replace the other.
A well-designed HTML sitemap groups pages by logical categories, with a clear visual hierarchy. It allows users who arrive on a deep page to navigate back to the main sections without going through the menu again. For sites with a structure exceeding three levels of depth, this page becomes a safety net against disorientation.
The structure of the HTML sitemap must reflect the actual hierarchy of the site, not the order of page addition. Grouping by theme or service makes reading immediate. A chronological plan forces the visitor to scan the entire list to find what they are looking for.
From an SEO perspective, the HTML sitemap distributes internal links to deep pages. Each link present on this page transmits a fraction of authority. On a site where certain pages receive no links from the main menu, the HTML sitemap ensures at least a crawl path and a relevance signal.
The sitemap remains an underutilized tool. Well-segmented on the XML side, responsive on the navigation side, cleaned of dead URLs, and complemented by a readable HTML version, it transforms the structure of a site into a concrete advantage for both search engines and visitors eager to find the right page.
