This free online XML Formatter tool lets you validate, format, beautify, escape, unescape, and minify XML data directly in your browser. No files are uploaded to any server. Your XML stays private and is processed locally on your device.
Whether you are cleaning XML from APIs, configuration files, RSS feeds, SOAP payloads, or developer workflows, this tool ensures your XML is properly indented, readable, and error-free.
It supports large files, nested XML structures, automatic syntax highlighting, whitespace normalization, and instant error detection.
Input Formats
Raw XML strings
Minified XML
XML with missing indentation
Escaped XML strings
Output Results
Prettified XML with proper indentation
Minified XML (single line)
Validation error messages with line numbers
Escaped/Unescaped strings
Key Features
Validate XML: Instantly check for syntax errors and well-formedness
Format & Beautify XML: Indent messy XML for better readability
Minify XML: Remove whitespace to reduce file size
Escape XML: Convert special characters to HTML entities
Unescape XML: Convert HTML entities back to characters
Automatic indentation: Smart indentation for nested structures
Works offline: No internet connection required after loading
Privacy and Security: 100% client-side, no server upload, no signup, no tracking
Shareable LinksShare your formatted XML code with colleagues or friends via a unique link. (Limit: 2KB)
Who is this for?
For Developers
Debug API responses and configuration files.
API debuggingConfig filesSitemap validation
For Data Analysts
Clean up and structure XML data exports for analysis.
Data cleaningLarge file processingStructure analysis
For Students
Learn XML structure and syntax rules.
Learning toolSyntax checkerAssignment helper
How to Use
1
Paste your XML code into the input editor.
2
Select your desired action (Format, Minify, etc.).
3
View the processed result instantly in the output editor.
4
Click 'Copy' to use the formatted XML.
Examples
Input
<root><child>content</child></root>
Output
<root>
<child>
content
</child>
</root>
Common Errors
XML Parsing Error: mismatched tag
XML Parsing Error: unclosed token
Premature end of data in tag
Code Examples
Python (xml.dom.minidom)
import xml.dom.minidom
xml_str = "<root><child>content</child></root>"
dom = xml.dom.minidom.parseString(xml_str)
print(dom.toprettyxml())
Frequently Asked Questions
Is this XML formatter free?
Yes, this tool is 100% free and always will be.
Does my XML get uploaded?
No. All processing happens in your browser. Your data never leaves your device.
Can I format large XML files?
Yes. It supports large and complex files, limited only by your browser's memory.
What XML formats are supported?
Any valid XML including SOAP, RSS, Android config, and API responses.
Does this tool work offline?
Yes, because all processing is client-side. Once loaded, it works without internet.
Can I format invalid XML?
I will do my best to format it! However, if the syntax is severely broken (like missing closing tags), I will highlight the specific errors so you can fix them easily.
How do I minify XML?
It's simple! Just paste your XML and click the 'Minify' button. I will instantly remove all unnecessary whitespace and newlines to reduce the file size for you.
