XML Formatter

Efficient XML formatter that produces clean, indented XML from messy input for developers, testers, and operations engineers in seconds.

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1,784+
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

This tool beautifies XML by parsing the input, validating structure, and emitting a consistently indented, readable document. It targets developers who manage configuration payloads, data exchanges, or API responses in CI pipelines and local workflows. By standardizing indentation and line breaks, it makes large XML files easier to scan, compare, and review in code reviews and documentation.
Conceptually, the formatter reads the XML, builds a hierarchical representation, and outputs a textual serialization with the chosen indentation and newline style. It preserves meaningful content such as CDATA blocks and entity references while normalizing whitespace around element boundaries. The result is well-formed XML that remains faithful to the original data.
Key differentiators include strict adherence to XML 1.0 rules, configurable indentation, and non-destructive handling of attributes and CDATA. It does not rely on network calls or browser features, making it reliable in CI pipelines and offline environments. Use cases include configuration file formatting, payload inspection, and preparing samples for documentation.
Common workflows: paste your raw XML, set indentation to 2 or 4 spaces, choose LF or CRLF, run the formatter, then copy the result or use the diagnostic output to fix errors. The tool is designed for speed and predictable output in engineering and operations contexts.

How to Use

  1. Provide inputs by pasting your raw XML into the tool
  2. Choose options: indentation size (2 or 4 spaces) and line ending style (LF or CRLF)
  3. Run the formatter to produce formatted XML
  4. Review the output and copy or export the result
  5. If needed, perform separate schema or DTD validation on the formatted XML
How to use xml formatter online beautify

Frequently Asked Questions

Find Quick Answers

What XML versions are supported?
The formatter enforces XML 1.0 well-formedness rules and can process documents that conform to XML 1.0. Documents with invalid constructs or mixed content may be rejected with a diagnostic. It does not perform schema validation by default.
Can I preserve CDATA and entity references?
CDATA sections are preserved as-is and emitted in their original form. Entity references are preserved in the textual output; the formatter does not resolve or expand them unless explicitly provided as pre-expanded text.
Does it validate against a DTD or XML Schema?
No. The formatter primarily ensures well-formedness and applies consistent formatting. For schema or DTD validation, use a separate validator or integrate an XML schema check after formatting.
How are attributes ordered?
Attribute order is preserved from the input by default. The formatter does not reorder attributes unless an advanced option is enabled, which is not part of the standard instant-format workflow.

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