Sitemap Validator
Check any XML sitemap for errors in seconds free, instant, and built to the official protocol.
Drop a sitemap .xml file here, or click to browse
Validation results will appear here.
About the Sitemap Validator
A broken or invalid sitemap can quietly stop search engines from finding your pages. This free sitemap validator checks your sitemap.xml against the official sitemaps.org protocol and flags exactly what's wrong missing tags, bad URLs, invalid dates, and structural errors before it costs you indexing. As a proper XML sitemap validator, it checks structure, required tags like and, duplicate URLs, valid date formats, and priority values the same things a Google sitemap validator needs to get right for reliable crawling. Just paste your sitemap URL. This online sitemap validator does the rest no install, no account, no guesswork.
How to use the Sitemap Validator
- 1
Paste or upload your sitemap
Drop in a .xml file or paste the sitemap's contents.
- 2
Validate
The tool checks it against the sitemap protocol instantly.
- 3
Fix the issues
Review the errors and warnings, fix them, and re-validate before submitting.
Why use Offlo's Sitemap Validator
Full protocol checks
Detects missing tags, broken structure, duplicate URLs, and invalid date or priority values not just a pass/fail guess.
Runs in your browser
Your sitemap is never uploaded — this online sitemap validator runs validation locally.
Syntax and error checks
Acts as a sitemap syntax checker and sitemap checker that flags malformed XML and invalid URLs.
Clear results
Errors and warnings are listed with the exact URL affected.
Who it's for
- Checking a sitemap before submitting to Search Console
- Debugging why pages aren't being indexed
- Running a quick sitemap test on auto-generated files
- Using an seo sitemap validator during site audits
- Confirming a sitemap follows the protocol
FAQ
Frequently asked questions
Everything you need to know about the Sitemap Validator.
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