XML Formatter & Validator
Validate and pretty-print XML locally in your browser. Nothing is uploaded.
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About XML Formatter & Validator
XML Formatter & Validator inspects XML structure, validates tag pairing, and beautifies XML trees with customizable indentation.
How to use XML Formatter & Validator
- Paste your XML markup into the text editor.
- Select indentation depth and tag formatting preferences.
- Click Format XML to validate tag structure and beautify layout.
- Review validation error reports or copy formatted XML.
Examples
Input: <root><item>Data</item></root> Formatted: <root> <item>Data</item> </root>
FAQ
What happens if an XML opening tag lacks a matching closing tag?
The validator reports an unclosed tag error with line number context.
Does formatting preserve CDATA blocks?
Yes. CDATA sections and XML comments are preserved without altering internal data text.