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Validate an XML sitemap

Paste the address of one sitemap file to check it against the sitemaps.org rules and see every error with the entry it is in.

✓ Free, no sign-up✓ Every rule checked✓ Each error with its entry

30 free checks a day. We read the public page and do not store it.

What it checks

What it checks.

Sitemap Validator

  • Status 200 and a <urlset> or <sitemapindex> root
  • The sitemaps.org namespace and escaped characters
  • The 50,000 URL and 50 MB limits, and .gz files
  • Absolute URLs on the same host, no duplicates, valid lastmod, changefreq and priority
Quick answers

Frequently asked questions.

What is the difference from the Sitemap Checker?
The Sitemap Checker finds and reads every sitemap on a site. The validator goes deep on one file you name.
What date format does lastmod need?
W3C Datetime: a date such as 2026-10-19, or a date and time with a time zone, such as 2026-10-19T08:00:00+00:00.
Why does an & break my sitemap?
Sitemaps are XML, where a bare & starts a special code. Write it as &amp; inside URLs.
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