Free Online XML Tools
Everything you need to work with XML — format, validate, convert, escape, and generate code. All 39 tools run client-side.
Format & Edit
Convert
Encode & Escape
Generate Code
What Is XML and When Should You Use It?
XML (eXtensible Markup Language) is a structured, self-describing data format widely used in enterprise systems, SOAP web services, document storage, configuration files (Maven, Android, .NET), and data interchange between legacy platforms.
Our XML toolkit provides everything you need to work with XML — format messy markup, validate structure, convert to modern formats like JSON or YAML, and generate typed code classes for multiple languages.
Common Use Cases
- check_circleFormat and prettify XML responses from SOAP APIs
- check_circleValidate XML config files for Maven, Android, or .NET projects
- check_circleConvert XML data to JSON for use in modern web apps
- check_circleParse WSDL files to understand SOAP service contracts
- check_circleEscape XML strings for safe embedding in HTML or attributes
- check_circleGenerate Java or C# data classes from an XML schema sample
- check_circleMinify XML to reduce payload size in web services
Frequently Asked Questions
What is the difference between XML and HTML?
HTML defines a fixed set of tags for displaying web content. XML is extensible — you define your own tags to describe any data structure, making it suitable for data interchange rather than presentation.
What are WSDL and SOAP?
WSDL (Web Services Description Language) is an XML format that describes a SOAP web service interface. SOAP is a protocol for exchanging structured messages over HTTP, commonly used in enterprise integrations.
Can I convert XML to JSON without losing data?
Yes. Our XML to JSON converter preserves attributes, nested elements, and text content. Complex structures like mixed content may require minor manual adjustment after conversion.
What languages can I generate from XML?
Our Data to Class generators support Java, Python, TypeScript, C#, Go, Rust, Swift, and Kotlin — producing typed data models from your XML structure.
Developer Insights
From the Blog
XML Is Not Dead: Why Enterprises Still Rely on It
Despite the JSON revolution, XML remains entrenched in healthcare, finance, and government systems.
Why JSON Formatting Matters More Than You Think
How proper JSON structure prevents production bugs, improves debugging, and makes code reviews faster.
The Case for 100% Client-Side Data Processing
Why we built OpenFormatter to process all data locally, and what that means for your workflow security.