This XML sitemap validator allows you to enter a URL to a Sitemap. Once checked, all sub-sitemaps (if there are sub-sitemaps) are checked. The tool checks the HTTP header status of all URLs. The URLs are broken down by status (200 OK, 301 redirect, etc.). Behind each URL in the output is also visible in which (sub) sitemap this link was found. This tool can not be stopped, the tool stops as soon as the browser is closed (or when the check is complete).