Free Online XML Sitemap Validator
An XML sitemap validator fetches a sitemap from our server, confirms it is valid urlset or sitemapindex markup, counts its URLs and flags structural errors.
This tool uses AI and sends your text to a secure API for processing. No data is stored after your session.
How to Use This Tool
- Enter the direct URL of the sitemap, for example /sitemap.xml or /sitemap_index.xml.
- Press Check to fetch and parse the file on our server.
- Confirm whether it is a urlset or sitemapindex and review the URL count.
- Resolve any flagged errors, such as a missing XML declaration or empty loc entries.
- Keep each file under 50,000 URLs and split into a sitemapindex if you exceed that.
What Is a XML Sitemap Validator?
An XML sitemap lists the URLs you want search engines to crawl, following the schema published at sitemaps.org. A urlset file lists individual page URLs; a sitemapindex file lists other sitemap files and is used once a site passes the protocol's limit of 50,000 URLs or 50 MB uncompressed per file. A valid sitemap needs an XML declaration, a correct root element and at least one loc entry.
We fetch the sitemap on our server — bypassing browser CORS limits — and run a structural check: it detects whether the file is a urlset or sitemapindex, verifies the XML declaration and root element, counts the loc entries and reports a preview of the URLs. It surfaces common problems such as a missing declaration, the wrong root element or an empty file with no URLs. This is a structural validation against the sitemaps.org conventions, not a full XSD schema validation.
Use it after generating or editing a sitemap to confirm it parses correctly before submitting it in Search Console or declaring it in robots.txt.
Frequently Asked Questions
urlset vs sitemapindex?
What does it validate?
What is the URL limit?
Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.
Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.
Related SEO Tools
Fetch a site's robots.txt, show its raw rules, count the user-agent groups and list every sitemap it declares.
Build an accurate site: operator query for a URL and open it on Google and Bing to see whether the page appears in the search index.
Enter a page URL and we extract its outbound links and test each one, reporting the status code so you can fix 404s and dead references.
Enter a URL to see the live HTTP response status and every header the server returns, including caching, security and content-type directives.
Trace the full redirect chain for a URL, hop by hop, with the status code and Location header at each step so you can spot 302s, loops and long chains.