What Is an XML Formatter?
An XML formatter pretty-prints XML documents by adding proper indentation and line breaks. It transforms minified or poorly formatted XML into a structured, hierarchical layout that clearly shows the nesting of elements.
How to Use This XML Formatter
- Paste your XML content into the input field.
- Click “Format” to format.
- Copy the indented, readable XML output.
Key Concepts
XML (Extensible Markup Language) uses a tree structure with elements defined by opening and closing tags. Well-formed XML requires every opening tag to have a matching closing tag, proper nesting, a single root element, and quoted attribute values. Formatting reveals the document’s hierarchy by indenting child elements relative to their parents.
Frequently Asked Questions
Does formatting affect XML data?
Formatting adds whitespace between tags, which is generally insignificant. However, in elements where whitespace is meaningful (xml:space=“preserve”), extra spaces could alter the content.
What is the difference between well-formed and valid XML?
Well-formed XML follows basic syntax rules. Valid XML is well-formed and also conforms to a DTD or XML Schema that defines allowed elements and attributes.
Can I format XML with namespaces?
Yes. The formatter preserves namespace prefixes and declarations. Namespace-aware formatting correctly handles elements like <ns:element xmlns:ns=“...”>.