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Sitemap XML Validator

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Validate sitemap.xml for well-formed XML, URL limits, absolute URLs, duplicates, lastmod dates, changefreq and priority values, right in your browser.

sitemap validatorsitemap.xml checkervalidate sitemapsitemap errors
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    Checks run locally in your browser: XML well-formedness, urlset/sitemapindex root, 50,000 URL limit, absolute http(s) URLs, mixed hosts, duplicates, fragments, W3C-date lastmod, changefreq and priority values, and the 50 MB uncompressed limit.

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    Frequently Asked Questions

    What are the sitemap limits?

    Up to 50,000 URLs and 50 MB uncompressed per file; use a sitemap index beyond that.

    Do changefreq and priority matter?

    Google ignores both, but invalid values are still flagged for other crawlers.

    What date format is lastmod?

    W3C datetime, for example 2026-01-15 or 2026-01-15T10:00:00Z.

    Is my sitemap uploaded?

    No, validation runs locally.

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