Sitemap XML Validator

About

Stop guessing. Know exactly which sitemap URLs are broken.

Sitemap XML Validator is a lightweight developer tool that fetches any sitemap XML URL,
validates its structure against the Sitemaps protocol, checks the HTTP status of every
listed URL, and exports a full report — all from your browser toolbar.

Open a sitemap in a tab and the extension detects it automatically. Or paste any
sitemap URL and run a manual audit in seconds.

WHAT IT CHECKS
-- XML structure — root element, namespace, malformed tags
-- Field values — lastmod date format, changefreq enum, priority range (0.0-1.0)
-- Every <loc> URL — live HTTP status codes (200, 301, 404, 500, timeout)
-- Empty or malformed <loc> entries flagged individually by entry number

WHAT YOU GET
-- Auto-detection when browsing a .xml sitemap page in any tab
-- Real-time progress bar with concurrent URL checking (8 at a time)
-- Results table: status code + category label per URL
-- One-click CSV export for sharing or further analysis
-- No account required, no tracking, no external servers

WHO IT IS FOR
-- SEO professionals auditing site crawlability
-- Developers verifying sitemap output before deployment
-- QA engineers testing site structure changes
-- Site owners checking for broken or redirected pages

HOW IT WORKS
1. Open any sitemap XML URL in Chrome — the extension detects it automatically