XML Tools
Format, validate, minify and convert XML — instantly, in your browser.
How to use the XML Formatter
- Paste XML or open an
.xmlfile. - Choose Format, Validate, Minify, XML → JSON or JSON → XML.
- Invalid XML shows the parser error and its position.
- Copy or download the result.
Why use this XML Formatter
- Pretty print and indent XML, SOAP and RSS feeds
- Validate well-formed XML
- Minify XML for smaller payloads
- Convert XML to JSON and JSON to XML
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Frequently Asked Questions
Is the XML formatter free?
Yes, completely free with no account or signup required.
Is my XML data safe?
All processing is in your browser via DOMParser. Your XML is never uploaded to any server.
What XML features are included?
Format (pretty print), validate well-formedness, minify, convert XML to JSON, and convert JSON to XML.
What is XML?
XML (eXtensible Markup Language) is a text-based format for storing and transporting structured data using nested tags. It is widely used in enterprise systems, SOAP APIs, RSS feeds, and configuration files.
How do I format XML online?
Paste your XML into the Format tab and click Format. The tool indents elements, adds line breaks, and makes the structure human-readable.
What is well-formed XML?
Well-formed XML follows basic syntax rules: a single root element, all tags properly closed, attributes quoted, and no illegal characters. Any standard XML parser can read a well-formed document.
How do I validate XML?
Use the Validate tab. The tool checks well-formedness using the browser's DOMParser and reports any syntax errors with their location.
What is the difference between XML and JSON?
Both represent structured data. JSON is lighter and preferred for web APIs. XML supports attributes, namespaces, and mixed content (text and elements), making it more expressive for document-centric formats.
How do I convert XML to JSON?
Switch to the XML to JSON tab, paste your XML, and click Convert. Each element becomes a JSON object key; attributes are prefixed with @ and text content uses a # key.
How do I convert JSON to XML?
Use the JSON to XML tab. Paste your JSON object and click Convert. Each key becomes an XML element nested according to the object structure.
What is XML minification?
XML minification removes all unnecessary whitespace and line breaks, producing the smallest possible XML string for network transmission or storage.