XML Formatter & Validator

Format messy XML, validate well-formed markup and minify documents locally in your browser.

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Well-formed XML checks

Catch mismatched tags, invalid nesting and malformed XML before pasting data into an API client, CMS or feed importer.

Readable formatted output

Pretty-print compact XML with two spaces, four spaces or tabs while keeping processing local to your device.

Private local processing

The tool uses browser-native parsing. There is no upload endpoint, server-side queue or stored document copy.

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Frequently Asked Questions

Is my XML uploaded to a server?

No. The XML formatter runs in your browser with DOMParser and JavaScript. Your XML is not uploaded to Convertr servers.

What does the XML validator check?

It checks whether the XML is well-formed, including matching tags, valid nesting and parser errors reported by your browser.

Can this validate against an XSD schema?

No. This browser tool validates XML syntax only. It does not validate documents against external XSD or DTD schemas.