XML Formatter
Beautify, minify, and validate XML online. Pretty-print with configurable indentation or compress to a single line.
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What Is XML Formatter?
XML Formatter is an online tool that beautifies, minifies, and validates XML documents. Paste any XML and instantly get a properly indented, human-readable version — or compress it to a single line for production use. The validator catches syntax errors and reports them clearly.
How to Use
- Paste your XML into the input area
- Click Beautify to pretty-print with configurable indentation
- Click Minify to compress to a single line
- Validation runs automatically — errors are shown below the input
- Copy the output with the Copy button
Features
- Beautify with 2 or 4 space indentation
- Minify to single-line XML
- Real-time validation with clear error messages
- Preserves attributes, comments, and CDATA sections
- Uses the browser's native DOMParser — no server required
FAQ
Does this support XML namespaces?
Yes. The browser's DOMParser handles namespaced XML correctly. Namespace declarations are preserved in the output.
What about the XML declaration?
The <?xml version="1.0"?> processing instruction is handled by the serializer. If your input includes it, it will be preserved.
Is my data sent to a server?
No. All processing uses the browser's built-in DOMParser and XMLSerializer. Nothing leaves your device.