Text Tools
XML Formatter
Validate and pretty-print XML with consistent indentation.
Error
DOMParser is not defined
Paste any XML and get a properly indented, validated version. The formatter checks for XML syntax errors and displays them clearly.
Text Tools
Validate and pretty-print XML with consistent indentation.
Error
DOMParser is not defined
Paste any XML and get a properly indented, validated version. The formatter checks for XML syntax errors and displays them clearly.
An XML formatter is a code beautification tool that restructures XML documents with consistent indentation, proper nesting, and readable formatting. It parses the XML structure, removes unnecessary whitespace, and rebuilds the code with aligned elements so developers and data analysts can quickly understand document hierarchy without syntactic errors.
The tool reads your raw XML input, parses the document structure (tags, attributes, text nodes), and reconstructs it with configurable indentation (usually 2 or 4 spaces per nesting level). It detects and highlights syntax errors (unclosed tags, mismatched quotes, invalid characters) before formatting. You can choose between pretty-print mode (readable) or minify mode (compact), which removes all non-essential whitespace to reduce file size for transmission or storage.
| Input | Result | Notes |
|---|---|---|
| <root><person><name>Alice</name><age>30</age></person></root> | <root> <person> <name>Alice</name> <age>30</age> </person> </root> | Minified XML expanded with 2-space indentation, making nesting levels obvious and tags easy to locate. |
| <data><user id="1" active="true"><email>user@example.com</email></user><user id="2" active="false"><email>another@example.com</email></user></data> | <data> <user id="1" active="true"> <email>user@example.com</email> </user> <user id="2" active="false"> <email>another@example.com</email> </user> </data> | Multiple records formatted with attributes preserved and clear visual grouping for rapid data navigation. |
| <svg><circle cx='50' cy='50' r='40' stroke='black' stroke-width='3' fill='red' /></svg> | <svg> <circle cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" /> </svg> | Self-closing tags and attributes standardized; single quotes converted to double quotes per XML convention. |
Formatting beautifies the structure with indentation and line breaks; validation checks that the XML is well-formed (all tags closed, attributes quoted, no invalid characters). This tool does both—it formats while validating, and reports errors if found.
Yes. The tool preserves CDATA blocks, comments, processing instructions, and DOCTYPE declarations unchanged, then applies indentation to surrounding elements. Your comments stay exactly as they are.
Standard minify preserves comments because they may contain important metadata or licensing info. If you want to strip comments entirely, check for a 'remove comments' option in the tool's advanced settings.
That's HTML syntax, not valid XML. In XML, every attribute must have a value: <input disabled="disabled" />. The formatter will flag this as an error and suggest the correction.
Yes. The formatter respects namespace prefixes (e.g., <root xmlns:ns="http://example.com" /> and <ns:child />) and maintains them during beautification. Indentation applies to all elements regardless of namespace.
If the formatter reports zero errors and the preview matches your original data content (only formatting changed), it's safe. Always test the formatted XML in your application with a small sample before deploying it to handle large files.