Online XML Formatter, Minifier & Validator

Format, minify, and validate XML documents instantly in your browser. Paste your XML, click Format to pretty-print with proper indentation, or Minify to compress it into a single line.

The validator checks if your XML is well-formed and reports parsing errors. All processing happens client-side — your XML data never leaves your browser.

What does XML formatting do?

XML formatting adds proper indentation and line breaks to make the document structure readable. It doesn't change the data, only the visual presentation for easier editing and debugging.

How does XML validation work?

The validator uses the browser's built-in DOMParser to check if the XML is well-formed — meaning all tags are properly opened, closed, and nested. It does not validate against a schema (XSD).