XML Formatter

A fast XML formatter designed for developers and data engineers to quickly pretty-print, indent, and standardize XML data.

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2,084+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how XML Formatter processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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About This Tool

The XML Formatter Online processes raw XML input to produce well-formed, consistently indented output that integrates into development, testing, and deployment workflows.
Conceptually it parses XML into a hierarchical structure and then serializes the tree with a configurable indentation scheme, preserving comments and CDATA while applying user-specified formatting rules. This separation of parsing and formatting ensures deterministic results across environments and languages; it also supports namespace-aware processing when requested. Use cases include preparing payloads for APIs, diffs in code reviews, and standardizing XML logs or configuration files.
The tool focuses on formatting quality and consistency rather than validation, making it a valuable utility for engineers who need readable, machine-ready XML. Advanced options allow whitespace minimization, attribute sorting, and controlled whitespace handling within text nodes. The result is a consistent, portable XML document that is easy to inspect, compare, and ingest into automation pipelines.

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How to Use

Provide XML input in the editor or paste.
Optional: set indentation (2-8 spaces) and enable minify or attribute sorting.
Run formatter to produce output.
Review the formatted XML for correctness and diffs.
Copy or export the formatted XML for pipelines or storage.

Frequently Asked Questions

Find Quick Answers

What formats does the tool support besides formatting?

The tool focuses on XML well-formedness and formatting. It does not convert XML to other data formats or perform schema validation unless the user enables a separate validation step in their workflow.

Can I customize indentation and whitespace behavior?

Yes. You can choose indentation width from 2 to 8 spaces, toggle minification, and opt to sort attributes for deterministic output. Whitespace inside text nodes is preserved unless minification is selected.

Does formatting validate XML against DTD or XML Schema?

No. Formatting preserves well-formedness but does not validate against DTDs or XML Schemas by default. Validation can be performed in a separate step if needed.

How can I export the formatted XML?

The tool provides a copy-to-clipboard option and an export/download option for the formatted XML, enabling easy integration into workflows and storage.

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