XML Formatter

This tool parses your XML into tags, text, comments and CDATA sections using its own hand-written tokenizer, then re-indents it two spaces per nesting level. A single text-only child (like <name>John</name>) is kept on one line, matching how most XML formatters handle simple leaf elements.

Since formatting requires understanding the tag structure, this tool also surfaces common well-formedness problems as it goes: unclosed tags, mismatched opening/closing tag pairs, and multiple root elements (valid XML must have exactly one root element).