XML Formatter

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Format, validate and minify XML

Developer Tools

How to Use XML Formatter

  1. 1Paste XML in the input
  2. 2Choose Format, Minify, Validate, or Convert to JSON
  3. 3Copy or download the result

About XML Formatter

XML (Extensible Markup Language) remains a critical data format in enterprise software, web services (SOAP, RSS, Atom), configuration files, and data exchange. Our XML Formatter makes working with XML fast and painless. Paste your raw or minified XML, click Format, and the tool produces clean, properly indented output.

The built-in validator uses the browser's DOMParser to detect syntax errors and report the exact line and character where the problem occurs. Need to bridge XML and JSON workflows? The Convert to JSON feature transforms well-formed XML into equivalent JSON in one click.

All processing runs locally in your browser — no data is ever sent to a server.

Key Features of XML Formatter

  • Beautify XML with configurable indentation
  • One-click minification to strip all whitespace
  • Real-time XML validation with precise error messages
  • Convert XML to JSON with structure preservation
  • Works entirely in-browser — no server uploads
  • Handles namespaces, CDATA sections, and processing instructions
  • Copy result to clipboard with a single click

Supported Formats

Input Formats

XMLMinified XMLSOAP envelopesRSS / Atom feedsSVG source

Output Formats

Formatted XMLMinified XMLJSON (converted)

Document Type Definitions (DTD) and external entity references are not resolved for security reasons.

Examples

Format a minified XML config

Make a compact config file readable.

Input

<config><db><host>localhost</host><port>5432</port></db></config>

Output

<config>
  <db>
    <host>localhost</host>
    <port>5432</port>
  </db>
</config>

Convert simple XML to JSON

Bridge XML APIs with JSON-based code.

Input

<user id="1"><name>Alice</name><active>true</active></user>

Output

{"user":{"@id":"1","name":"Alice","active":"true"}}

Common Use Cases

  • Debugging SOAP API request and response bodies
  • Reading and editing RSS or Atom feed files
  • Formatting XML configuration files for readability
  • Converting XML data exports to JSON for JavaScript applications
  • Validating XML before sending to a web service
  • Minifying XML to reduce file size in production deployments

Troubleshooting

Unclosed tag error

Solution

Every opening tag must have a matching closing tag. Check for missing </tag> closings, especially nested inside loops or conditionals.

Invalid characters in XML

Solution

Characters like &, <, >, ", and ' in text content must be escaped as &amp;, &lt;, &gt;, &quot;, and &apos; respectively.

Multiple root elements

Solution

XML requires exactly one root element. Wrap all top-level elements inside a single parent element.

Frequently Asked Questions

Can it fix broken XML?

It validates XML using the browser DOMParser and shows clear error messages. Fixing must be done manually.

Does it support XML namespaces?

Yes. Namespaced elements and attributes are preserved during formatting and minification.

Can I convert XML to CSV?

Not directly. You can convert XML to JSON first, then use the JSON to CSV tool to get a CSV output.

Is there a size limit for XML files?

No server-side limit. Very large files (>5 MB) may be slow due to browser memory constraints.