XML Formatter - Beautify XML Online

Format and beautify XML with customizable indentation. Validate XML syntax and fix formatting issues. Fast, private, works entirely in your browser.

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Frequently Asked Questions

XML formatting adds proper indentation and line breaks to make XML documents readable. It doesn't change the data, only the visual structure.

No. Formatting only affects whitespace between elements. Your element names, attributes, and content remain unchanged.

Yes. All processing happens in your browser using JavaScript. No data is sent to any server.

The tool will show an error message with details about what's wrong. Fix the issue and try again.

Yes, but very large files may take a moment to process. For files over 1MB, consider using a desktop tool.

Choose between 2 spaces, 4 spaces, or tabs for indentation to match your preferred coding style.

Yes. All XML comments () are preserved and formatted with proper indentation.

Yes. Paste minified or single-line XML and the formatter expands it to a readable, hierarchical structure.

Yes. CDATA sections () are preserved with their content untouched, including any special characters.

Yes. Namespace declarations and prefixed elements are formatted correctly while preserving all namespace information.