Advanced XML Formatter & Validator

Indentation Type

Indent Size

Preserve Whitespace

Self-Close Empty Tags

Sort Attributes

Omit XML Declaration

XML Input

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Formatted Output

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Before (Original)

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After (Formatted)

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Ready

XML Formatter v2.0 • Client-side processing

Operation completed!

Professional XML Formatting & Validation

Format, validate, and optimize XML documents with namespace support and advanced diff visualization

XML Validation

Real-time XML syntax validation with detailed error reporting and namespace support for complex documents.

Advanced Diff View

Compare before and after XML with side-by-side visualization showing structural changes and formatting improvements.

Smart Formatting

Intelligent XML beautification with proper indentation, attribute formatting, and CDATA preservation.

Perfect for Every XML Use Case

From configuration files to data exchange, format XML for any application

Configuration Files

Format application configs, build files, and system configurations with proper structure and readability.

Data Exchange

Process SOAP messages, RSS feeds, and API responses with proper XML structure and validation.

Web Services

Debug and format XML for web services, API integrations, and enterprise system communications.

Frequently Asked Questions

Everything you need to know about XML formatting

What XML features are supported?

Our tool supports all XML features including namespaces, CDATA sections, comments, processing instructions, and complex nested structures.

How does namespace handling work?

The formatter preserves all namespace declarations and prefixes while properly formatting the document structure and maintaining namespace integrity.

Can I customize XML formatting options?

Yes! Adjust indentation style, choose between spaces or tabs, control attribute formatting, and preserve or modify CDATA sections as needed.

Is my XML data kept secure?

Absolutely! All XML processing happens locally in your browser. Your documents never leave your device, ensuring complete privacy and security.