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Did you know? · No. 10 · Status Is UP data ·

The biggest websites were the least likely to have a sitemap we could find

Card showing “42%” and “of top-1K sites had a discoverable XML sitemap, vs 75% in the top-1M band”.

Status Is UP’s October 2026 readiness snapshot looked for an XML sitemap in two places: a Sitemap line in robots.txt, or a sitemap at /sitemap.xml. We found one on 73% of 160,764 measured sites. Among the top 1,000 sites in the Chrome UX Report list, the figure was only 42% of the 419 we measured; in the top-1M band it was 75%.

Large sites have other ways to get crawled—strong links, feeds, or sitemaps submitted directly in Search Console—so a missing public pointer is not proof of an SEO problem. For a smaller site, though, a sitemap is one of the cheapest discovery aids available. Google’s documentation says you can insert a Sitemap: line anywhere in robots.txt and Google will find it the next time it crawls that file, and that you can list several sitemaps there.

Keep expectations realistic: Google describes a sitemap as a hint, not a guarantee that every URL will be crawled. It works best when it lists only canonical, indexable pages.

Try this on your site

Open yoursite.com/robots.txt. If there is no Sitemap: line, add one with the full URL of your sitemap or sitemap index, then submit the same URL in Google Search Console’s Sitemaps report.

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Each fact is checked against the primary sources listed. Spotted an error? Email the Status Is UP team. Status Is UP helps owners improve their sites; it is not an uptime monitor. For live outage status, see Status Is Down.