XML Sitemap Validator
Validate any XML sitemap: confirm it parses as a urlset or sitemap index, count the URLs, and spot-check that the first few return HTTP 200. Free.
Frequently asked
Does it check every URL?
It validates the XML and counts all entries, then spot-checks the first few for a 200 to catch obviously-broken sitemaps. A full crawl of every URL would be too slow for an instant tool.
What's a sitemap index?
A sitemap that lists other sitemaps (for big sites). We detect both <urlset> (URLs) and <sitemapindex> (child sitemaps).