Free Developer Tool
XML Formatter
Beautify or minify your XML data instantly. Format with custom indentation, remove comments, and optimize for production. 100% client-side processing - your data never leaves your browser.
Invalid XML
Quick Usage Guide
Beautify Mode
Beautify adds proper indentation and line breaks to make your XML readable. Preserves CDATA sections, comments, and processing instructions.
Minify Mode
Minify removes unnecessary whitespace between tags and optionally strips XML comments to reduce file size for storage or transmission.
XML Basics
What is XML?
XML (eXtensible Markup Language) is a markup language for storing and transporting data. Unlike HTML, XML tags are not predefined - you create your own tags to describe data structure.
XML vs HTML
XML is stricter than HTML: all tags must be closed, tags are case-sensitive, and attribute values must be quoted. XML is designed to carry data, while HTML is designed to display data.
Well-Formed XML
Valid XML must have a single root element, properly nested tags, closed elements, and case-sensitive tag names. This tool validates your XML structure during formatting.
CDATA Sections
CDATA sections contain text that should not be parsed. Content inside
<![CDATA[...]]> is preserved
exactly as-is, including special characters.
XML Syntax Elements
| Element | Syntax | Description |
|---|---|---|
| Declaration | <?xml version="1.0"?> | Defines XML version and encoding |
| Element | <tag>content</tag> | Basic building block of XML |
| Empty Element | <tag /> | Self-closing element with no content |
| Attribute | <tag attr="value"> | Additional info about elements |
| Comment | <!-- comment --> | Notes ignored by parsers |
| CDATA | <![CDATA[...]]> | Unparsed character data |
Common Use Cases
API Responses
Format XML responses from SOAP APIs or RSS feeds for easier debugging and understanding of the data structure.
Configuration Files
Edit XML configuration files like web.config, pom.xml, or Android manifests with proper formatting for readability.
Data Export
Minify XML data exports to reduce file size before transmission or storage in databases.
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