Tool

Sitemap Validator

Features

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Validate XML sitemaps against the sitemaps.org protocol specification

Two input modes: paste XML directly or fetch from a URL

Detect schema errors, malformed URLs, duplicate entries, and invalid dates

Check changefreq and priority values for protocol compliance

Warn on protocol limit violations (50,000 URLs, 50 MB uncompressed)

Analyze lastmod freshness distribution and detect uniform dates

Detect and list sitemap index files with child sitemap URLs

Clear severity labels distinguishing errors from warnings

How it works

Paste your sitemap XML or enter a URL to fetch it. The tool parses the XML client-side and runs validation checks against the sitemap protocol specification. Each URL entry is checked for a valid loc element, well-formed lastmod dates, valid changefreq and priority values, and duplicate entries.

Results are categorized by issue type with clear error/warning severity. The tool also surfaces protocol-level warnings like exceeding the 50,000 URL limit. A freshness analysis shows how recently URLs were modified and flags uniform dates that provide no crawl signal.

This tool validates sitemap structure and protocol compliance. It does not check URL reachability, indexability, or redirect chains — submit your sitemap to your search engine's webmaster tools for full diagnostics.