CODERS KIT

XML Sitemap Validator

Free XML Sitemap Validator. Check your sitemap.xml for syntax errors, broken tags, and Google compatibility. instant client-side validation.

XML Sitemap Input
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Validation Results
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Paste your XML sitemap in the left panel and click "Validate XML Sitemap" to see the results here.

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About the XML Sitemap Validator

The XML Sitemap Validator by Coders Kit is a powerful diagnostic tool designed to help you verify your sitemap's compliance with standard protocols. A clean, error-free sitemap is essential for search engines like Google and Bing to efficiently crawl and index your website content.

Comprehensive Validation Checks

XML Syntax

Ensures your code is well-formed XML. It detects missing closing tags, invalid characters, and general parsing errors that would prevent crawlers from reading the file.

Structure & Schema

Verifies the correct root elements (<urlset> or <sitemapindex>) and ensures the standard sitemap 0.9 XML namespace is correctly declared.

Google Limits

Checks your sitemap against the official usage limits: a maximum of 50,000 URLs per sitemap and a file size limit of 50MB (uncompressed).

Required Tags

Scans every URL entry to ensure it contains the mandatory <loc> tag. It also checks that URLs do not exceed the 2,048 character limit.

Values & Constraints

Validates that optional tags like <priority> contain valid float values between 0.0 and 1.0, and that <lastmod> dates use the correct W3C format.

Sitemap Indices

Fully supports Sitemap Index files, validating the structure of nested <sitemap> entries to ensure your multi-file sitemap architecture is sound.

Why Use Our Validator?

  • Instant Results: Validation happens instantly in your browser using JavaScript. No waiting for server uploads.
  • 100% Private: Your sitemap data is analyzed locally and never sent to any server.
  • SEO Essential: Fix crawl errors before they impact your search rankings and indexability.
  • Detailed Reporting: Get specific error messages and warnings to pinpoint and fix issues fast.

Frequently Asked Questions (FAQ)

Is this XML Sitemap Validator free?
Yes, it is completely free to use with no limits on the number of sitemaps you can check.
What are common reasons for an invalid sitemap?
Common errors include:
  • Missing closing tags (e.g., </url>).
  • Incorrect date formats in <lastmod> (should be W3C Datetime).
  • Unescaped special characters in URLs (like & instead of &amp;).
  • Blank lines or spaces at the very beginning of the file.
Does this tool fix the errors for me?
This tool is a validator, meaning it identifies errors but does not automatically rewrite your file. You will need to edit your sitemap.xml file based on the feedback provided in the report.