DNS
Resolvers can return different cached records depending on geography, TTL and propagation state.
Network & Web Tools
Pro diagnostic reportSitemap XML Validator Online Free
Inspect sitemap XML structure, URL entries, duplicate locations, sitemap-index references and common protocol limits locally in your browser.
Diagnose
Run a bounded public check.
Understand
See a health score and explanation.
Act
Follow prioritized recommendations.
Validate sitemap XML in your browser
Paste a URL sitemap or sitemap index to inspect structure, locations, duplicates and common size limits.
Document type
Unknown
Locations
0
Status
Needs attention
About this tool
A sitemap validator helps identify malformed XML and practical content problems before submission. This tool recognizes URL sitemaps and sitemap indexes, checks location values and highlights duplicate or excessive entries. It is designed for pre-deployment review; a technically valid sitemap still needs canonical, indexable URLs that return the expected status and are permitted to be crawled.
Common use cases
- ✓ Validate a generated sitemap before deployment.
- ✓ Inspect sitemap output from a CMS or framework.
- ✓ Find duplicate, malformed or cross-host location entries.
- ✓ Review whether a large site should be split into child sitemaps and a sitemap index.
How to use it
- Paste the complete uncompressed sitemap XML.
- Review the detected document type, location count and warnings.
- Correct malformed, redirected, blocked or non-canonical entries.
- Publish the file and submit its public URL through the relevant webmaster console.
Important interpretation notes
- • A URL sitemap is limited to 50,000 URLs and 50 MB uncompressed; larger sites need multiple files.
- • Compressed .xml.gz files may be accepted by search engines, but paste decompressed XML into this validator.
- • Image, video and news extensions have additional eligibility and metadata requirements beyond core XML validity.
- • This tool does not fetch every child sitemap referenced by a sitemap index.
Professional interpretation guide
Understand and verify your sitemap xml validator results
Use the result as a focused diagnostic signal. Verify important findings before changing DNS, hosting, security, caching or application configuration.
What the result tells you
- ✓ Parsing checks whether the XML is structurally readable.
- ✓ URL counts and sampled entries help review sitemap scope.
- ✓ Warnings highlight common protocol or content issues that deserve manual confirmation.
How to verify it
- Open the sitemap at its public URL and confirm a successful response.
- Compare listed URLs with canonical, indexable pages and review redirects or blocked paths.
- Submit the sitemap and inspect child-file errors in the relevant webmaster tools.
Network diagnostics
Interpret results in the correct protocol layer
Network tools observe different layers: DNS resolves names, TCP establishes connections, TLS authenticates encrypted sessions and HTTP carries requests, redirects, headers and caching rules. A successful result at one layer does not prove that the complete website or application is healthy.
TLS
Certificate validity, hostname matching, trust chains and protocol support are separate checks.
HTTP
Status codes, redirect chains, headers and caching directives describe application behaviour.
Measurement context
Latency and reachability vary by location, network path, browser and time.
What the operation can change
- A cached DNS answer may differ from an authoritative nameserver response.
- A 200 status code can still return the wrong content or an application error page.
- A valid certificate does not prove the website itself is trustworthy.
- Security-header tools report configuration, not complete vulnerability coverage.
Domain-specific verification
- Repeat tests from another network or resolver when location matters.
- Check the final URL and every redirect hop.
- Confirm timestamps, certificate names and expiry dates.
- Use browser developer tools and server logs for production incidents.
Common mistakes to avoid
- • Including redirected, blocked, duplicate or non-canonical URLs.
- • Leaving stale last-modified values.
- • Assuming valid XML guarantees indexing.
Privacy and safe use
Pasted XML is processed locally. A fetched sitemap URL is requested publicly.
Limitations
- • Validation cannot guarantee that search engines will crawl or index each URL.
- • Compressed files must be decompressed before pasting into this validator.
- • Large sitemap indexes and image, video or news extensions require separate review.
Continue the diagnostic workflow
Combine related checks instead of relying on one isolated result.
Related Network & Web Tools
Frequently asked questions
Which sitemap formats are supported?
The validator checks standard URL sitemaps with a urlset root and sitemap indexes with a sitemapindex root.
How large can a sitemap be?
A standard sitemap file should contain no more than 50,000 URLs and be no larger than 50 MB when uncompressed. Larger sites should use multiple files and a sitemap index.
Can I submit a compressed sitemap?
Search engines commonly accept gzip-compressed .xml.gz sitemaps, but this browser tool validates pasted XML content rather than decompressing an uploaded archive.
Are image, video or news sitemap extensions validated?
Their XML can be present, but this tool focuses on the core sitemap structure and location entries. Extension-specific eligibility rules still require separate review.
Does valid XML guarantee indexing?
No. A sitemap supports discovery. Search engines still evaluate canonicalization, crawl access, content quality, redirects and indexing directives.
What commonly causes sitemap submission errors?
Frequent causes include malformed XML, inaccessible files, wrong hostnames, redirects, blocked URLs, non-canonical URLs and child sitemap links that cannot be fetched.