XML Viewer - Free Online XML Viewer & Formatter Tool

Free Online XML Formatting, Validation & Conversion Tool

Input
Output
History

Key Features

XML Viewer & Formatter Features

1. XML Formatting & Beautification

Format complex XML data for better readability. Automatic indentation and line break optimization make nested structures easy to understand. Compatible with development environments like VSCode and various programming languages.

2. XML Validation

Validate XML syntax and structure against schemas. Instantly identify and highlight errors with detailed explanations and suggestions for fixes.

3. XML Tree Viewer

Visualize XML structure in an interactive tree view. Expand and collapse nodes, search elements, and navigate complex documents with ease.

4. XML Conversion Tools

Convert XML to JSON formats. Support for large files and proper handling of special characters and encodings.

5. Developer-Friendly Features

Integration with development workflows, syntax highlighting, and compatibility with popular IDEs and programming languages.

XML Basics Tutorial

XML Structure
<?xml version="1.0" encoding="UTF-8"?>
<root>
  <element attribute="value">
    <child>Content</child>
  </element>
</root>

XML documents have a hierarchical structure with elements, attributes, and content.

Common XML Errors
<root>
  <element>Unclosed tag
  <element attribute=value> <!-- Missing quotes -->
</root>

Common XML errors include unclosed tags, missing quotes around attribute values, and improper nesting.

XML Usage Scenarios

API Development

XML is widely used in SOAP APIs and web services. Our tool helps developers validate and format XML requests and responses.

<soap:Envelope>...</soap:Envelope>
Configuration Files

Many applications use XML for configuration. Our tool helps developers create and validate configuration files.

<configuration>...</configuration>
Document Formats

XML is the foundation for formats like DOCX, SVG, and RSS. Our tool helps understand and modify these document structures.

<rss version="2.0">...</rss>

Frequently Asked Questions

An XML Viewer is a tool that helps developers and users visualize XML (eXtensible Markup Language) documents in a more readable format. Our online XML Viewer formats XML data with proper indentation, highlights syntax, validates XML structure, and provides a tree view for easier navigation of complex XML documents.

To format XML using our tool, simply paste your XML content into the input area on the left side, then click the "XML Parser / Formatter" button. The tool will automatically format your XML with proper indentation and display the result in the output area. You can also validate XML, view it as a tree structure, or minify it using the respective buttons.

Yes, your data is secure. Our XML Viewer processes all XML data directly in your browser - we don't send your XML content to any server. Your XML data is stored locally in your browser's storage for convenience (to maintain history), but you can clear this at any time using the "Clear History" button.

Yes, our XML Viewer is designed to handle large XML files efficiently. The tool uses optimized parsing and rendering techniques to ensure good performance even with complex XML structures. However, extremely large files (over 10MB) might cause some slowdown depending on your browser and device capabilities.

Our XML Viewer supports all major XML versions including XML 1.0 and XML 1.1. It handles various XML features such as:

  • XML Namespaces
  • CDATA Sections
  • Processing Instructions
  • XML Comments
  • Special Characters and Entities

Related XML Tools & Resources

XML Validator
XML Tree View
XML to JSON
XML Minifier

XML Resources & Guides

XML Best Practices

Learn how to structure your XML documents efficiently and follow industry best practices for maintainable XML.

  • Proper element naming conventions
  • When to use attributes vs. elements
  • XML namespaces best practices
  • Handling special characters
XML vs JSON Comparison

Compare XML and JSON data formats to understand when to use each format for your specific use case.

  • Data structure differences
  • Performance considerations
  • Readability and maintainability
  • Industry adoption trends
XML Schema Tutorial

Learn how to create and use XML Schema (XSD) to validate and structure your XML documents.

  • Basic XSD elements and types
  • Complex type definitions
  • Validation constraints
  • Schema best practices
XML in Web Services

Explore how XML is used in web services, APIs, and data exchange protocols.

  • SOAP protocol overview
  • REST APIs with XML
  • XML-RPC implementation
  • Security considerations

XML in Modern Development

Enterprise Integration

XML remains the standard for enterprise data exchange, especially in industries like finance, healthcare, and government services where established systems rely on XML-based protocols.

Document Formats

Many document formats are XML-based, including DOCX, SVG, EPUB, and RSS feeds. Understanding XML helps developers work with these formats effectively.

Configuration Files

Many systems and frameworks use XML for configuration, including Spring, Hibernate, and Android. XML's hierarchical structure makes it ideal for complex configuration settings.

XML Tools & Technologies

Tool Type Popular Options Use Cases
XML Parsers DOM, SAX, StAX, JAXB Reading and processing XML documents programmatically
XML Editors XMLSpy, Oxygen XML, Visual Studio Creating and editing XML documents with validation
XML Transformation XSLT, XQuery, XPath Converting XML to other formats or restructuring XML data
XML Validation DTD, XML Schema (XSD), RelaxNG Ensuring XML documents conform to specific structures
XML Web Services SOAP, XML-RPC, REST with XML Building API endpoints that exchange XML data