XML Formatter Online Free
Paste raw or minified XML to instantly format it with proper indentation, nested element structure, and syntax validation. Works with RSS feeds, SOAP, SVG, Android layouts, and any well-formed XML — entirely in your browser.
✓ Free developer tool✓ No account required✓ Browser-based utility✓ Fast results✓ Mobile friendly
Input XML
This tool runs in your browser and does not upload your data to BuBird servers.
How To Use
How to Use XML Formatter
1
Paste Your XML
Paste raw, minified, or unformatted XML into the input area.
2
Format or Validate
Click Format to apply indentation and structure, or Validate to check for syntax errors in your XML.
3
Review the Output
Well-formed XML is displayed with each element on its own line and child elements indented. Errors show the location of the syntax problem.
4
Copy the Result
Copy the formatted XML to use in your editor, documentation, or integration.
Example
Example Use
Inspecting an RSS Feed Response
You fetch an RSS feed from an API and receive a single-line XML blob containing hundreds of items. Paste it into the XML Formatter to expand the structure, revealing each <item> element with its <title>, <link>, <description>, and <pubDate> children — making it straightforward to verify the data shape before writing a parser.
Use Cases
Who Uses XML Formatter
Backend Developers
Format SOAP request and response envelopes, XML config files, and API XML payloads for debugging.
Android Developers
Beautify minified Android layout XML files and resource files for easier reading and review.
Web Developers
Format SVG files, RSS feeds, and sitemap XML to inspect structure and find malformed elements.
QA Engineers
Validate XML test fixtures and service response bodies to confirm correct structure during testing.
Technical Writers
Format XML code examples in documentation so they are readable and consistently indented.
Students & Learners
Explore XML structure by formatting examples and seeing how nesting, attributes, and declarations work.
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FAQ
Frequently Asked Questions
Does the XML Formatter validate my XML?
Yes. The formatter parses your XML and highlights syntax errors such as unclosed tags, malformed attributes, or missing declarations. Well-formed XML is formatted; invalid XML shows an error message.
Is my XML sent to a server?
No. All formatting and validation runs locally in your browser. Your XML content is never sent to BuBird servers.
What types of XML does this tool support?
The tool supports standard XML documents including RSS and Atom feeds, SOAP envelopes, SVG files, Maven and Gradle build files, Android layout files, and any other well-formed XML document.
Can I minify XML with this tool?
The primary function is formatting for readability. For compact output, use the Minify tool to strip whitespace from your XML.
What is the difference between well-formed and valid XML?
Well-formed XML follows basic syntax rules (proper nesting, closed tags, quoted attributes). Valid XML additionally conforms to a specific schema or DTD. This tool checks for well-formedness only.