Do you really need an XML sitemap for all your websites?

What does 'well-structured small site' really mean?

Google remains deliberately vague on the thresholds. A site with 50 pages? 200? 500? No official metric exists. The most likely hypothesis: a site where each page is accessible in a maximum of 3-4 clicks from the homepage, with coherent internal linking and either a silo or classic tree architecture.

The term 'well-structured' implies that every important URL is linked from at least one other already crawled page. No orphan pages hidden in a dark corner of the site. Googlebot follows links: if your architecture is logical and you leave nothing stranded, the bot finds everything on its own.

Why does Google emphasize internal linking over sitemaps?

Because internal linking is a signal of relevance and hierarchy, not the sitemap. An XML sitemap is just a raw list of URLs with some metadata (lastmod, priority). It helps with crawling, but it does not convey anything about the relative importance of pages or their semantic context.

Internal linking, on the other hand, carries meaning: it distributes internal PageRank, guides the crawl towards strategic pages, and contextualizes content through anchors. Google always prefers 'natural' signals — a link in content is worth more than a line of XML.

When is the sitemap still truly useful?

Let’s be honest: as soon as your site exceeds a few hundred pages, generates content frequently, or contains poorly linked sections, the sitemap becomes a critical safety net. Google doesn't state that it's useless everywhere — it merely indicates that it’s not *necessary* for perfectly structured small sites.

Instances when the sitemap is essential: e-commerce sites with thousands of products, media sites publishing daily, sites with dynamic URLs or facets that are hard to crawl, multilingual sites with hreflang annotations, sites with deep pages (accessible in 5+ clicks). In these cases, the sitemap speeds up indexing and reduces gaps in crawling.

• Well-linked small site: the sitemap is optional, linking is sufficient
• Medium/large site or complex architecture: the sitemap is highly recommended
• Frequently updated content: the sitemap with lastmod helps Google prioritize
• Orphan or poorly linked pages: the sitemap compensates (but it's better to correct the linking)
• Multilingual with hreflang: the sitemap centralizes hreflang annotations

Does this statement align with observed practices in the field?

Yes and no. On sites with 20-50 pages and a simple structure, I've indeed seen that Googlebot indexes everything without a sitemap, sometimes within hours of the first crawl. The bot has become very efficient at following internal links and mapping a simple site.

But here lies the issue: how many sites are truly 'well-structured'? Even some 100-page sites often have orphan pages (filters, tags, archives), linking errors, or entire sections accessible only via JavaScript. In these cases, the sitemap is not a luxury — it’s a necessary crutch. [To check]: Google never specifies the 'small' threshold or the exact criteria for 'well-structured'.

What nuances should be added to this claim?

The first nuance: Google sometimes confuses 'discovery' with 'rapid indexing'. Yes, without a sitemap, Googlebot will likely discover your pages eventually. But how long will that take? On an e-commerce site launching 50 new products daily, waiting for the bot to randomly follow internal links is not a viable strategy.

The second nuance: the sitemap also serves to communicate metadata that HTML doesn't always carry well. The <lastmod> tag informs Google that a page has been recently modified, which may speed up recrawling. Hreflang annotations in the sitemap prevent linguistic targeting errors. These uses don't pertain to discovery, but to optimizing crawl.

In what cases does this rule not apply at all?

Any cases where architectural complexity or volume make internal linking insufficient. Sites with infinite pagination, sites with facet filters generating thousands of combinatorial URLs, sites with poorly hydrated JavaScript content on the server side. There, the sitemap becomes the only guarantee that Google sees your priority URLs.

Another case: sites with tight crawl budgets. If Google allocates 500 URLs crawled a day to your site of 10,000 pages, and your linking spreads the crawl over secondary pages, you need a sitemap to direct Googlebot to what matters. The sitemap doesn't replace good linking, but it complements it when crawl resources are limited.

What should you do on a small site?

If you manage a site with fewer than 200 pages and a simple structure, test the absence of a sitemap on a subset of new pages. Publish 10-15 new URLs without including them in the sitemap, ensure they are well-linked from already indexed pages, and monitor their indexing via Search Console. If they show up within 48-72 hours, your linking works well.

That said, even on a small site, keeping a sitemap costs nothing. It serves as technical documentation for Search Console (error tracking, coverage analysis), and it facilitates the integration of hreflang tags or lastmod metadata if your site evolves. In other words: not *necessary*, but still useful.

What mistakes should you avoid when skipping the sitemap?

Mistake #1: believing that good internal linking = a few links in the footer. No. Good linking distributes PageRank intelligently, connects every strategic page from multiple entry points, and utilizes descriptive anchors. If your important pages are only linked from a poorly crawlable JavaScript dropdown menu, you have a problem.

Mistake #2: neglecting orphan pages. Before you delete your sitemap, crawl with Screaming Frog or OnCrawl to identify URLs accessible only via sitemap. If you find any, either integrate them into the linking, or keep the sitemap. Leaving orphan pages without a sitemap = guaranteeing they will never be indexed.

How can you verify that your site is 'well-structured' according to Google?

Use the URL inspection tool in Search Console and check that Googlebot discovers your pages through internal links, not through the sitemap. If in 'Discovery Referrer' you consistently see 'Sitemap', it indicates that your linking is insufficient. The goal: for the majority of pages to be discovered through URLs already crawled.

Another test: calculate the average click depth from the homepage. No strategic page should be more than 3 clicks away. Beyond that, even with good linking, crawling becomes inefficient and PageRank dilutes. A tool like Sitebulb or Oncrawl gives you that metric instantly.

• Crawl the site to identify orphan pages and correct the linking
• Check in Search Console that pages are discovered via internal links, not via sitemap
• Measure click depth: no key page beyond 3 clicks
• Test the indexing of new URLs without a sitemap on a sample
• Keep a sitemap even on a small site for monitoring and metadata
• Document architectural changes and monitor the impact on crawl