XML Sitemap Validator Lite
Paste XML sitemap content to catch parse errors, duplicate URLs, invalid loc values, and bad lastmod dates before submission.
Catch sitemap errors before submission
A malformed sitemap can quietly undermine crawling — a parse error, duplicate URLs, an invalid loc value, or a badly formatted lastmod date can cause search engines to ignore part or all of it. This lite validator checks pasted sitemap XML for exactly those common problems, so you find them before you submit rather than after coverage drops.
It is a fast pre-flight check for a hand-edited or generated sitemap: confirm the XML is well-formed, that every URL is unique and valid, and that dates follow the expected format. Catching issues here saves the slow feedback loop of waiting on Search Console to flag them.
Private and instant
Validation runs entirely in your browser — you paste the XML, nothing is fetched or uploaded — so your full URL inventory stays on your device.
Frequently Asked Questions
What does this sitemap validator check?
It checks whether XML parses, finds loc entries, flags invalid URLs, duplicate URLs, and invalid lastmod dates.
Is it a complete search-engine validator?
No. It is a lightweight structural check. Use Search Console or a full crawler for final validation.
Can it validate sitemap index files?
It can extract loc tags from sitemap indexes, but it does not fetch child sitemaps.
Is my XML uploaded?
No. Parsing and checks run locally in your browser.
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