Format XML code with proper indentation, minify, validate, and align attributes
Zero Dependencies · Works Offline📝 XML Input
📜 History
What Can the XML Beautifier Do?
The XML Beautifier & Formatter is a free online developer tool that transforms messy XML code into well-indented, clean, readable structure with a single click. It also provides XML minification (remove whitespace to reduce size), XML syntax validation (detect errors with location), and attribute alignment (align multiple attributes to the same column). Ideal for API development, configuration file editing, and data exchange formatting. Everything runs locally: XML Beautifier & Formatter and other values are processed on your device, never sent to a server—no XML data is ever uploaded to a server.
Core Features
- Smart Beautification: Auto-detect XML tag structure, add proper indentation and line breaks, handle self-closing tags and comments
- XML Minification: Remove extra whitespace and line breaks to compress XML into a single line
- Syntax Validation: Detect XML syntax errors with error position and description
- Attribute Alignment: Align multiple attributes to the same column for better readability
- Statistics: Display tag count, attribute count, character count
How to Use
1. Paste your XML code into the input area, or click "Load Example" for a quick demo.
2. Configure options: indent size, attribute alignment, whitespace preservation.
3. Click "Beautify" to format, "Minify" to compress, or "Validate" to check syntax.
4. View the result and statistics below.
5. Click "Copy" or download as .xml file.
Use Cases
Case 1: API Development
Format compressed XML from API responses for easier reading and debugging of SOAP/REST interfaces.
Case 2: Configuration Files
Format Maven POM, Spring configs, Tomcat server.xml and other XML configuration files for readability.
Case 3: Data Exchange
Format XML data exchange files (RSS, SVG, Office documents) for review and modification.
Technical Background
XML (eXtensible Markup Language) is an extensible markup language standardized by W3C in 1998. XML must follow strict rules: all tags must be closed, attributes must have quoted values, tags must be properly nested, and it's case-sensitive. XML namespaces (xmlns) avoid element name conflicts. Common XML applications include XHTML, SVG, RSS/Atom, SOAP, WSDL, Maven POM, Android layouts, and Spring configurations. Good XML formatting uses 2 or 4 space indentation, aligned attributes on separate lines, and clear comment annotations.
❓ FAQ
Does beautifying change XML behavior?
No. Beautifying only changes indentation and line breaks without modifying content or structure.
Does it support XML validation?
Yes. The tool detects XML syntax errors and shows the error location.
Can I minify XML?
Yes. Minify mode compresses XML into a single line, removing extra whitespace.
Is my data uploaded?
No. All formatting happens locally in your browser. Your XML never leaves your device.
Does it handle large files?
Yes. It can process XML files up to several hundred KB.
Does it support attribute alignment?
Yes. Optionally align attributes to the same column for better readability.