Sitemap Validator
Paste or upload your sitemap.xml and check it against the sitemaps.org protocol — instantly see errors and warnings for every entry.
🔒 Processed locally in your browser
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How to use
- Paste your sitemap.xml content into the box above, or click Upload .xml file to load one from your device.
- The tool validates it instantly against the sitemaps.org protocol — there's no button to click.
- Read the summary banner for a quick pass/fail verdict, then check the list below for the exact reason behind each error or warning.
- Fix the issues in your sitemap and re-paste or re-upload it to confirm they're resolved before submitting it to search engines.
Features
- Validates sitemap.xml against the official sitemaps.org protocol rules
- Checks every <url> entry for a valid <loc>, <lastmod>, <changefreq>, and <priority>
- Detects sitemap index files, missing namespaces, oversized files, and malformed XML
- Clear pass/fail summary plus a detailed, per-entry list of errors and warnings
- 100% client-side — your sitemap file never leaves your browser
Frequently asked questions
Why does a sitemap.xml need to be valid?
Search engines like Google and Bing skip sitemaps they can't parse, so a single malformed tag or invalid value can prevent your entire sitemap from being used to discover pages — validating it first avoids wasted crawl opportunities.
What's the difference between an error and a warning?
Errors break the sitemaps.org protocol and can cause the whole file to be rejected, such as an invalid changefreq value. Warnings, like a missing lastmod, are optional recommendations that don't invalidate the file.
Can I validate a sitemap index file?
Yes — the tool detects a sitemapindex root and flags it as such, but each individual sitemap it references should be validated separately by pasting its own contents.
Does this tool check whether my URLs actually exist?
No, it only validates structure and syntax against the sitemaps.org protocol. It doesn't fetch your URLs, so broken links or 404s inside a structurally valid sitemap won't be flagged.
Is my sitemap file uploaded anywhere?
No — validation runs entirely in your browser using JavaScript. Nothing you paste or upload is ever sent to a server.