XML Formatter & Validator

XML formatting adds proper indentation and line breaks to XML markup, making it easier to read and understand the document structure. This tool uses your browser built-in DOMParser for accurate formatting.

The tool parses your XML using the browser DOMParser and checks for well-formedness errors such as unclosed tags, mismatched elements, and invalid characters. Errors are displayed with descriptions to help you fix them.

Yes. You can choose between 2-space or 4-space indentation. The formatted output updates instantly when you change the setting.

Yes! All processing happens entirely in your browser. Your XML data is never sent to any server. No data is collected, stored, or transmitted.

The formatter handles standard XML elements, attributes, text content, CDATA sections, comments, and processing instructions. It preserves all content while reformatting the structure.