Validate XML syntax and catch parsing errors before deployment. Paste sitemaps, feeds, or config files to confirm they are well-formed XML.
Frequently Asked Questions
What does XML validation check?
It confirms the document is well-formed — properly nested tags, closed elements, and valid syntax.
Does this validate against XSD or DTD?
No. This checks well-formedness only, not schema compliance.
Can I validate sitemaps?
Yes. Paste any XML sitemap or feed to confirm it parses correctly.
Need formatted output?
Use the XML Formatter after validation passes.
Is this tool free and does it work on mobile?
Yes on both counts. The XML Validator on draft21 is completely free with no sign-up required and works on all devices.
Related Tools
XML FormatterIndent and beautify valid XML.JSON ValidatorValidate JSON syntax.Sitemap ValidatorValidate sitemap URLs and structure.HTML Entity DecoderDecode HTML entities in XML text.Regex TesterTest patterns against XML snippets.Developer & Web UtilitiesBrowse all developer and web utility tools on draft21.