XML Viewer Online — Free XML Formatter & Validator | Online Gallery
Format, validate & inspect XML hierarchies client-side. Validate XML schema hierarchies, count DOM nodes, and view beautified XML/XSD markup in browser.
What is XML Viewer and what does it do?
Inspect, format, and validate XML documents, XSD schemas, and SVG code with DOM node validation and automated indentation.
- Format raw XML with clean 2-space tag indentation.
- Catch syntax errors and report malformed tag locations.
- Count total nodes across complex XML schemas.
How does XML Viewer work?
Uses the browser native DOMParser to validate markup and a tokenizer to generate indented XML strings.
100% private: all processing happens locally in your browser using client-side WebAssembly, WebCrypto, WebAudio, and HTML5 Canvas. Your files are never uploaded to any server.
Who needs XML Viewer?
Software Engineers & Integrators
Validate SOAP, config files, and XML manifests securely.
Supported file formats
XML Document Viewer & Inspector opens and processes the following file extensions directly in your browser:
.xml.xsd.xsl.xsltHow to use XML Viewer — step by step
- 1
Load XML
Drop your .xml or .xsd schema file.
- 2
Review Syntax
Check node hierarchy and indentation.
- 3
Copy
Copy beautified XML.
Frequently asked questions
Does it validate XML syntax errors?
Yes, DOMParser catches malformed tags and flags errors.
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