XML Sitemap Validator

What Is This XML Sitemap Validator Tool?

This free tool checks an existing XML sitemap for structural errors and validates every URL listed inside it. Paste in a sitemap URL, or a sitemap index file, and the tool confirms the XML is correctly formatted according to the sitemap protocol, then checks each listed URL to flag anything that shouldn’t be there broken links, redirects, or pages blocked from indexing.

It’s built for anyone who’s inherited an existing sitemap, generated one with a different tool or plugin, or simply wants to confirm their current sitemap is healthy before search engines rely on it. If you don’t have a sitemap yet, the XML Sitemap Generator builds one from scratch.

How to Use the XML Sitemap Validator

1. Enter your sitemap URL typically something like yourdomain.com/sitemap.xml into the input box.
2. Run the validation. The tool fetches the file, confirms it’s well-formed XML following the correct sitemap schema, and then checks the status of each URL listed inside.
3. Review the results. You’ll see a summary of total URLs found, along with any that returned errors 404s, redirects, server errors, or URLs blocked by robots.txt plus any structural issues with the sitemap file itself, like invalid XML or missing required tags.

If you submit a sitemap index file (a sitemap that lists other sitemaps), the tool will check each child sitemap referenced inside it.

Common Sitemap Errors This Tool Catches

• Broken URLs (404s) listed in the sitemap. Pages that were deleted or moved but never removed from the sitemap send search engines to dead ends, wasting crawl budget and creating a poor signal about sitemap accuracy. The HTTP Status Checker is useful if you want to spot-check a suspicious URL on its own.
• Redirected URLs in the sitemap. Best practice is to list only final destination URLs directly, not URLs that redirect elsewhere; redirects in a sitemap add unnecessary steps for crawlers. If you want to trace exactly where a redirected entry actually leads, the Redirect Checker shows the full hop-by-hop chain.
• URLs blocked by robots.txt. Including a URL in your sitemap while simultaneously blocking it in robots.txt sends a contradictory signal, since you’re asking search engines to crawl a page you’ve also told them not to access. The Robots.txt Tester confirms exactly which rule is causing that block.
• Invalid XML formatting. Missing closing tags, incorrect encoding, or malformed structure can cause search engines to reject the entire sitemap rather than just the problematic entry.
• Sitemap exceeds size or URL limits. A single sitemap file is limited to 50,000 URLs and 50MB uncompressed; exceeding either limit means the file needs to be split into multiple sitemaps referenced by an index file.

Why Validating Your Sitemap Matters

• A broken sitemap can be ignored entirely. If the XML structure itself is invalid, search engines may disregard the whole file rather than just skipping the problematic entries, meaning none of your URLs benefit from it.
• Stale sitemaps erode trust in the signal over time. If search engines repeatedly encounter broken or redirected URLs in your sitemap, they may begin to trust and rely on it less as an accurate source, even for the URLs that are correct.
• It’s the fastest way to catch inconsistencies after a migration. After a redesign, replatform, or bulk content cleanup, old sitemap entries are one of the most common things left behind, and this kind of validation catches them quickly.

Who Uses This Tool

• SEO professionals validating a sitemap as part of a regular technical SEO audit or after a site migration.
• Developers confirming an auto-generated sitemap (from a CMS or plugin) is structurally valid and free of broken links.
• Website owners troubleshooting Google Search Console warnings related to sitemap errors.
• Agencies performing a technical health check across multiple client sites.

FAQ

What’s the maximum number of URLs allowed in one sitemap file? 50,000 URLs per file, with a 50MB uncompressed size limit larger sites typically split content across multiple sitemaps referenced by a sitemap index file.

Should a sitemap include redirected URLs? No, best practice is to list only the final destination URLs directly, since including redirected URLs adds unnecessary steps for crawlers and can dilute the sitemap’s reliability.

Is this tool free to use? Yes, completely free, with no sign-up and no usage limit.

What happens if my sitemap includes a URL blocked by robots.txt? This creates a contradictory signal, since you’re listing the page for crawling while simultaneously blocking it the tool flags this specifically so you can decide which directive should actually apply.

Can I validate a sitemap index file, not just a single sitemap? Yes, if you submit a sitemap index, the tool checks each child sitemap referenced inside it individually.

Why would Google Search Console show sitemap errors even though the file loads fine in my browser? Search Console validates against the full sitemap protocol and checks every listed URL’s status, which a browser simply loading the raw XML file doesn’t do this tool performs that same deeper validation.

Looking for something else? Check the XML Sitemap Generator, Redirect Checker, Robots.txt Tester, HTTP Status Checker, or browse the full Free SEO Tools collection.