Check any XML sitemap or sitemap index in seconds. Find broken structure, wrong namespace, bad dates, duplicates and mixed hosts, then export every URL to CSV.
| # | URL | Last modified | Issues |
|---|
Search engines are strict about sitemaps. A wrong namespace, a missing loc tag, an unescaped & or a file over 50 MB can make Google skip part or all of it. This validator checks every rule from the sitemaps.org protocol and Google’s guidance, then shows you a clear list of errors, warnings and every URL in the file.
| Check | Rule | Level |
|---|---|---|
| Valid XML | The file must be well-formed XML | Error |
| Namespace | Must be http://www.sitemaps.org/schemas/sitemap/0.9 | Error |
| Size | Up to 50,000 URLs and 50 MB uncompressed | Error |
| Encoding | UTF-8, with spaces and & encoded | Warning |
| Lastmod | W3C date format, not in the future | Warning |
| Duplicates | Each URL listed once | Warning |
| Same host and protocol | All URLs on one host, http or https, not both | Warning |
Your sitemap is fetched from its URL, or the XML you paste is used.
Our server or your browserThe file is read as XML. Broken tags or characters are reported with their line.
In your browserThe tool tells a urlset (sitemap) from a sitemapindex and checks the right rules for each.
In your browserNamespace, limits, encoding, dates, duplicates, hosts and protocols are tested.
In your browserYou get graded issues and a full URL table with CSV export.
In your browserurl must have a loc with a full, absolute URL.2026-10-11 or 2026-10-11T09:00:00+00:00.priority and changefreq.The validator checks the file itself. It does not open every URL inside it. To check that listed pages return 200 and are indexable, use our HTTP Status Checker or SEO Audit Tool.
Checks both sitemap files and sitemap index files.
Finds broken tags and characters fast.
Warns before you hit 50,000 URLs or 50 MB.
Finds bad, future and fake lastmod dates.
Flags repeated URLs and mixed domains or protocols.
Download every URL and date as a spreadsheet.
Audit sitemaps for clients in seconds.
Test sitemap output before you deploy.
Check what your SEO plugin creates.
Keep large product sitemaps within limits.
First release with sitemap and index checks, limits, date, duplicate and host checks, and CSV export.
We run the tool against our test cases again and check the sitemaps.org protocol and Google's sitemap docs for changes.
Tool page last reviewed on .
Tell us what you entered, what happened and what you expected. Our developer checks every report, fixes confirmed bugs as a high priority and tests the fix before it goes live.
This page follows our Editorial Policy and Methodology. If something here is wrong, our Corrections Policy explains how we fix it. Learn more about the SpellMistake team.
No ratings yet. Be the first to rate this tool.
How useful was the XML Sitemap Validator for you?
Ratings come from real visitors. One rating per person. We never add, edit or remove ratings.
It checks if your XML sitemap follows the sitemap protocol and Google's rules, and lists every error and warning.
Yes. It is 100% free, with no sign-up.
One sitemap can have up to 50,000 URLs and be up to 50 MB uncompressed. Use a sitemap index for more.
No. Google ignores them. It may use lastmod if the dates are accurate.
Usually because of broken XML, a wrong namespace, a redirect on the sitemap URL or a server error. Run this validator to find the cause.
Yes. The validator detects sitemap index files and checks them with the right rules.
No. Only list pages you want indexed. Noindex, redirect and error pages should be left out.