How do I validate XML syntax?

Our XML formatter automatically validates syntax when you format. If there are errors like unclosed tags, mismatched elements, or invalid characters, you will see a detailed error message with the location of the problem.

XML Formatter Online - Beautify & Pretty Print XML

Q: What is XML formatting?

XML formatting (or beautifying) adds proper indentation and line breaks to XML documents, making them easier to read and understand. It transforms compact, single-line XML into a hierarchical structure that clearly shows element nesting.

XML Formatter - Beautify XML Online

Format and beautify XML documents with proper indentation. Validate syntax, fix structure issues, and make XML readable.

Indent:

Size:

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Paste your XML here to format and beautify...

OutputEMPTY

Formatted output will appear here...

How to Format XML

Paste Your XML

Copy your minified or unformatted XML and paste it into the input editor.

Click Format

Click the "Format" button to beautify your XML with proper indentation.

Copy or Download

Copy the formatted XML to clipboard or download it as an .xml file.

Before & After Example

Before (Minified)

<root><user id="1"><name>John</name><email>[email protected]</email></user></root>

After (Formatted)

<root>
  <user id="1">
    <name>John</name>
    <email>[email protected]</email>
  </user>
</root>

Common XML Use Cases

SOAP Web Services

Format SOAP request/response messages for debugging API integrations and web service calls.

Configuration Files

Beautify web.config, app.config, pom.xml, and other XML configuration files for easier editing.

RSS/Atom Feeds

Format RSS and Atom feed XML to inspect content, debug feed issues, or create new feeds.

SVG Graphics

Format SVG files for better readability when editing vector graphics by hand.

Why Use Our XML Formatter?

Instant Formatting

Our XML Formatter transforms messy, minified XML into beautifully indented, readable documents instantly. No waiting, no loading - just paste your XML and click Format. Perfect for debugging SOAP services, reviewing configurations, and understanding complex XML structures.

Syntax Validation

Beyond formatting, we validate your XML syntax. Unclosed tags, mismatched elements, invalid attribute syntax - all errors are detected and reported with clear messages and exact locations so you can fix them quickly.

Preserves Structure

Formatting only adds whitespace - your XML structure, attributes, namespaces, CDATA sections, and processing instructions are all preserved exactly as they were. The formatted output is semantically identical to the input.

100% Client-Side

All XML processing happens locally in your browser. Your XML data is never sent to any server, making it completely safe to format sensitive configurations, credentials, and private documents.

Minify Option

Need compact XML for production? Use the Minify button to remove all unnecessary whitespace, reducing file size for faster transmission while keeping the XML valid and well-formed.

Large File Support

Since processing happens in your browser, you can format very large XML files without any upload limits. Handle megabytes of XML data without network latency or file size restrictions.

Frequently Asked Questions

What is XML formatting?

XML formatting (also called prettifying or beautifying) adds proper indentation and line breaks to XML documents. Each element is placed on its own line, child elements are indented, and the hierarchical structure becomes visually apparent. This makes XML much easier to read and debug.

What makes XML valid?

Valid (well-formed) XML must have: a single root element, properly nested elements with matching opening and closing tags, quoted attribute values, properly escaped special characters (< > &), and case-sensitive tag names that match exactly.

Can I convert XML to JSON?

Yes! Use our XML to JSON converter to transform XML documents to JSON format. This is useful when migrating from XML-based APIs to modern JSON-based services.

Is my XML data secure?

Absolutely. All XML processing happens entirely in your browser. Your data never leaves your computer, is never uploaded to any server, and is never stored anywhere. It's completely safe for sensitive configurations and credentials.