Free XML Sitemap Validator

Our XML sitemap validator fetches your sitemap by URL and checks it against the sitemaps.org protocol and Google's limits, so you catch problems before they cost you crawl coverage. Enter the sitemap URL and the tool parses it, identifies whether it is a URL sitemap or a sitemap index, lists the entries, and flags any errors and warnings. If it is an index, it also fetches and validates a sample of the child sitemaps so you see the whole picture in one report.

It checks the things that quietly break crawling: a missing or relative loc, an invalid lastmod date, an out-of-range priority, an unrecognized changefreq, duplicate URLs, a missing XML declaration, and files that exceed the 50,000-URL limit. Every check is deterministic and based on the actual file, not a guess, and the fetch runs on our server so it works even when a sitemap blocks browser requests.

For SEOs

Our tool turns "is my sitemap OK?" into a clear answer, so you can:

• Confirm Google can read every URL you submitted
• Spot relative or malformed URLs that get skipped
• Check a sitemap index and its children in one pass

For Developers

Our tool gives you a fast pre-submission check, so you can:

• Validate sitemap XML structure and required fields
• Catch lastmod, priority, and changefreq formatting errors
• Verify you are under the 50,000-URL per-file limit

Why Use Our XML Sitemap Validator

• Protocol-accurate: Checks follow the sitemaps.org spec and Google's documented limits, so a clean result means search engines can actually parse the file, not just that it looks like XML.
• Follows the index: For a sitemap index, it fetches and validates the child sitemaps too, which is where real errors usually hide on larger sites.
• Honest reporting: Every error and warning points at a specific rule or URL. There is no vague health score, just the concrete issues to fix.