Free OnlineDeveloper Tools
XML Formatter & Validator
Format, beautify, and validate XML documents. Indent nested elements and detect syntax errors in XML data.
xml formatterxml validatorformat xmlxml beautifierxml pretty print
Key Features — XML Formatter & Validator
Pretty-print with customizable indentation
Well-formedness validation with error reporting
Collapsible element tree view
Minify mode for compact output
Syntax highlighting for tags and attributes
Why Use This Tool — XML Formatter & Validator
Free Online Xml formatterXml validator — for EveryoneFast & Easy Format xmlXml beautifier — 100% FreeFree Online Xml pretty print
Privacy First
All processing happens in your browser. Your data never leaves your device.
Lightning Fast
Get instant results with zero wait time. No server delays, no loading screens.
Works Everywhere
Use on any device — desktop, tablet, or phone. No downloads or plugins needed.
Frequently Asked Questions — XML Formatter & Validator
What does XML validation check?
The validator checks that your XML is well-formed, meaning all tags are properly opened and closed, attributes are quoted, elements are correctly nested, there is exactly one root element, and special characters are properly escaped. It does not validate against an XSD schema.
How does it handle XML namespaces?
The formatter correctly processes namespace declarations and prefixed elements. It preserves all namespace URIs and prefixes in their original positions while applying indentation to the document structure.
Can it format SOAP messages and SVG files?
Yes. The tool formats any well-formed XML document regardless of its schema or purpose. SOAP envelopes, SVG graphics, RSS feeds, configuration files, and any other XML format are all supported.