WebToolsPlanet
Developer Tools

XML Beautifier

Paste minified or messy XML and get it formatted with clean indentation in one click. Also minify XML to strip all whitespace for production use.

Last updated: May 20, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution

Find this tool useful? Support the project to keep it free!

Buy me a coffee

What is XML Beautifier?

XML (Extensible Markup Language) is widely used for configuration files, API responses, data interchange, SVG graphics, and document formats like DOCX and XLSX. Minified or machine-generated XML is often a single long line that is nearly impossible to read or debug.

An XML beautifier reformats the markup by adding consistent indentation so the nesting structure is immediately visible — child elements are indented under their parents, attributes stay on the same line as their element, and text content is kept inline when possible. The reverse operation, minification, strips all unnecessary whitespace to reduce file size for network transfer or storage.

How to Use XML Beautifier

1

Paste your XML into the input area or click "Load Sample"

2

Click "Beautify" to format with indentation, or "Minify" to strip whitespace

3

Adjust the indent setting (2 spaces, 4 spaces, or tabs)

4

Copy the output or download it as an .xml file

5

The validation indicator shows whether the XML is well-formed

Common Use Cases

  • Developers debugging minified XML API responses from REST or SOAP services.
  • DevOps engineers reading and editing Maven pom.xml, Ant build files, or Spring XML config files.
  • Front-end developers formatting SVG source files for editing or committing to version control.
  • Data engineers inspecting XML data exports from enterprise systems like SAP or Salesforce.
  • QA teams preparing human-readable XML fixtures for test assertions.
  • Students learning XML structure and schema design.

Example Input and Output

A minified XML API response is formatted into readable, indented markup for debugging.

Minified XML input
<?xml version="1.0"?><catalog><book id="1"><title>XML Developer Guide</title><author>Gambardella</author><price>44.95</price></book><book id="2"><title>Midnight Rain</title><author>Ralls</author><price>5.95</price></book></catalog>
Formatted XML output
<?xml version="1.0"?>
<catalog>
  <book id="1">
    <title>XML Developer Guide</title>
    <author>Gambardella</author>
    <price>44.95</price>
  </book>
  <book id="2">
    <title>Midnight Rain</title>
    <author>Ralls</author>
    <price>5.95</price>
  </book>
</catalog>

Privacy

All XML processing runs entirely in your browser. No data is sent to any server.

XMLlint equivalent

This tool is a browser equivalent of running xmllint --format file.xml on the command line. For CI/CD pipelines, use xmllint; for quick manual formatting, this tool is faster.

Frequently Asked Questions

What is the difference between beautify and minify?
Beautify adds indentation and newlines so humans can read the structure easily. Minify removes all non-essential whitespace to reduce file size, which is useful for network transfer, storage, or production deployments where readability is not needed.
Does this validate my XML?
Yes. The tool checks whether your XML is well-formed (correct tag nesting, matching open and close tags, valid characters). It does not validate against an XSD schema, but it will flag structural errors that would cause any XML parser to fail.
Why does my XML fail to format?
Formatting requires well-formed XML — every opening tag must have a matching closing tag, attribute values must be quoted, and special characters like & and < must be escaped as &amp; and &lt;. The error message will point to the problem.
Is my XML data sent to a server?
No. All formatting runs in your browser using JavaScript. Your XML never leaves your device.
Can I format very large XML files?
Yes, but very large files (several MB) may take a moment to process. For extremely large files, consider using a local tool like xmllint or a code editor with XML support.
What indent options are available?
2 spaces (default), 4 spaces, or a single tab character. Choose the style that matches your project or team convention.

Related Tools

XML to JSON Converter
Parse and convert XML to clean JSON instantly — attributes, namespaces, and nested elements handled.
HTML Beautifier
Format and beautify minified or messy HTML code.
JSON Formatter
Format, validate, and beautify JSON instantly — with clear error messages, Tree View, Diff mode, and Schema validation.
CSS Beautifier / Formatter
Format, indent, and beautify minified or messy CSS code — with configurable indentation and sorting options.
JavaScript Beautifier
Format and beautify minified or messy JavaScript code.
YAML to JSON Converter
Convert YAML to JSON and JSON to YAML — for config files, CI pipelines, and Kubernetes manifests.