XML Formatter, Validator & XML↔JSON Converter

Format and validate XML with syntax highlighting. Convert XML to JSON and JSON to XML. 100% client-side.

Free Always No Account Needed 100% Client-Side

Input XML

XML Output

<root>
  <person id="1">
    <name>Alice</name>
    <age>30</age>
  </person>
  <person id="2">
    <name>Bob</name>
    <age>25</age>
  </person>
</root>

About this tool

XML (Extensible Markup Language) is widely used in enterprise systems, configuration files, SOAP APIs, RSS feeds, and Android resources. Despite JSON's rise, XML remains critical in many domains.

This tool provides:

XML Formatting — indent and prettify any XML with configurable indentation (2/4 spaces or tabs). Syntax highlighting makes it easy to read deeply nested structures.

XML Validation — strict parser validation with descriptive error messages pointing to the exact location of any malformed markup.

XML → JSON Conversion — converts XML to idiomatic JSON, handling attributes (prefixed with @), text content (#text), and arrays automatically.

JSON → XML Conversion — converts JSON back to valid XML. Useful for transforming data between APIs using different formats.

Frequently Asked Questions

What is the difference between XML and HTML?

XML is strict (all tags must be closed, attributes must be quoted). HTML5 is more permissive. XML is for data; HTML is for presentation.

How are XML attributes handled in JSON conversion?

Attributes are prefixed with '@' in the JSON output (e.g., <item id='1'> becomes {"@id": "1"}).

Can this parse XML with namespaces?

Yes. Namespace prefixes are preserved in the JSON keys (e.g., soap:Envelope becomes "soap:Envelope").

What is CDATA in XML?

CDATA sections contain text that should not be parsed as XML markup. They're often used for embedding HTML or code inside XML.

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