About the XML Sitemap Validator
An XML sitemap lists the pages you want search engines to find. A good sitemap holds only live, canonical, indexable URLs with honest lastmod dates; a bad one is full of redirects, 404s and URLs from the wrong host — and Google starts trusting it less.
Enter a domain (Nuqti finds the sitemap from robots.txt) or a sitemap URL. Nuqti parses it — including sitemap indexes and gzip — validates the format and limits, charts lastmod freshness and checks the status of a sample of URLs.