XML Formatter
Indent and prettify XML documents.
Input XML
Output
What is a XML Formatter & Validator?
An XML Formatter takes compressed or unindented XML and adds proper indentation to show the document hierarchy clearly. The validator checks that your XML is well-formed — proper nesting, matching tags, and correct encoding declarations.
Common Use Cases
Formatting SOAP API responses
Reading XML configuration files from Java or .NET apps
Validating XML before processing with a parser
Making RSS and Atom feed files readable
Debugging XML data exchange between systems
Tips & Best Practices
Well-formed XML requires all tags to be properly closed and nested
XML is case-sensitive — and are different elements
Always declare encoding at the top:
Frequently Asked Questions
What is well-formed XML?▼
Well-formed XML follows all XML syntax rules: every opening tag has a closing tag, tags are properly nested, there is exactly one root element, and attribute values are quoted.
What is the difference between XML and HTML?▼
XML is a markup language for storing and transporting data. HTML is a markup language for displaying data in browsers. XML tags are user-defined while HTML tags are predefined.