XML validator and formatter

Validate, repair, format and compare XML online, test XPath expressions, validate against an XSD schema and convert XML to JSON.

Features

• Validate XML well-formedness and namespaces, with every error reported by line and column
• Auto-repair broken XML: unclosed or mismatched tags, unescaped characters, unquoted attributes and more
• Beautify XML with 2-space, 4-space or tab indentation, or minify it to a single line
• Validate XML against an XSD schema
• Test XPath 1.0 expressions and see matching nodes highlighted
• Compare two XML documents side by side, with added, removed and changed elements, attributes and text highlighted
• Convert XML to JSON and JSON to XML
• Upload an XML file or paste XML directly, then copy or download the result

Everything runs entirely in your browser — nothing you paste is sent to a server.