Crawling and indexing tool

XML Sitemap Validator

Validate sitemap syntax separately from sitemap strategy. The result identifies objective XML and URL problems, then keeps duplicates, last-modified dates, and mixed origins as visible review evidence.

FreeNo loginNo data stored
Pasted XML is processed instead of the URL. The public checker reads at most 2 MB and does not crawl listed pages.
Result quality guidance

Pre-deployment validation

Paste generated XML and catch structural errors before publishing it at a public URL.

Live sitemap diagnosis

Fetch the deployed file and separate response failures from XML validation issues.

Migration review

Find old origins, duplicates, or malformed dates that entered a rebuilt sitemap.

What it checks

Use the result as evidence, not a score.

  • URL set and sitemap index root structures
  • Paired XML elements and required location values
  • Absolute HTTP and HTTPS locations
  • Duplicate URLs, lastmod formats, origin count, and the 50,000-entry limit
What it cannot check
  • Whether every listed URL is canonical, indexable, useful, or current
  • Google Search Console submission and processing state
  • Whether search engines will crawl, index, rank, or display any submitted URL
How it works

Input, inspect, improve, verify.

The tool processes what you enter, shows a plain-language result, and gives you a safer next step. Make the change on your website, deploy it, then test the live page again.

Popular use cases

Useful before and after publishing.

Pre-deployment validation

Paste generated XML and catch structural errors before publishing it at a public URL.

Live sitemap diagnosis

Fetch the deployed file and separate response failures from XML validation issues.

Migration review

Find old origins, duplicates, or malformed dates that entered a rebuilt sitemap.

Pro tips

Small checks that prevent avoidable mistakes.

  1. Validate XML and URL selection as two separate questions.
  2. Use absolute canonical URLs and keep protocol and host choices intentional.
  3. Only publish lastmod when it reflects a meaningful page update.
  4. Split files before exceeding 50,000 URLs or 50 MB uncompressed.
Common issues and solutions

What to review when the result looks wrong.

The XML is well formed but still unhelpful

A syntactically valid file can still contain redirects, errors, noindex pages, duplicates, or alternate URL versions.

lastmod dates are inaccurate

Remove mechanically refreshed dates unless they represent meaningful page changes that search engines can trust.

More than one origin appears

Cross-site sitemaps need deliberate ownership and submission context. Confirm the setup rather than changing every URL automatically.

Frequently asked questions

Short answers before you make a change.

Does valid XML guarantee that Google accepts a sitemap?

No. Validation catches observable file issues. Search Console can show processing feedback for a verified property, and submission still does not guarantee indexing.

Can I validate a sitemap index?

Yes. The validator distinguishes a sitemap index from a URL set and checks the location entries in either structure.

Does the validator crawl every listed URL?

No. It validates the sitemap file itself. URL accessibility and indexability need separate bounded checks.

Related free tools
Sitemap FinderXML Sitemap GeneratorIndexability Checker
Need the wider picture? Run the One Website Checkup.Method: bounded server-side sitemap fetch or in-request XML parsing with deterministic protocol checks. No paid dataset. Last reviewed 30 August 2026.
Read the practical guide

Valid XML is only the first sitemap test

Understand the evidence behind this tool, where its result stops, and the safer next steps to verify on a live page.

Read the guideEvidence · Limitations · Verification