TFT

Convert XML to YAML Online

Easily convert XML files into cleaner, more readable YAML. This free tool is perfect for modernizing configurations or simplifying data structures.

XML to YAML Converter

Convert XML documents to YAML format

How XML to YAML Conversion Works

XML to YAML conversion transforms verbose XML markup into clean, readable YAML format. XML elements become YAML keys, attributes are preserved or flattened, and text content becomes values.

This tool parses the XML document tree and maps it to YAML structures. Nested XML elements become nested YAML mappings, repeated elements become arrays, and mixed content is handled appropriately.

Here's the process:

  1. XML is parsed into a document tree
  2. Elements map to YAML keys
  3. Attributes become nested keys or prefixed keys
  4. Repeated elements become YAML arrays

Example conversion:

XML Input:
<person>
  <name>John</name>
  <age>30</age>
</person>

YAML Output:
person:
  name: John
  age: 30

When You'd Actually Use This

Modernizing configurations

Convert verbose XML configs to YAML. Maven, Spring, and other tools now support YAML—reduce config file size and improve readability.

API response transformation

Convert XML API responses to YAML for processing. Some legacy APIs return XML—convert to YAML for easier manipulation in modern workflows.

Data migration projects

Migrate from XML-based systems to YAML. Convert existing XML data exports to YAML for import into modern applications and databases.

Documentation simplification

Create readable examples from XML schemas. Convert XML documentation examples to YAML for clearer tutorials and guides.

Build system migration

Convert build configurations from XML to YAML. CI/CD systems like GitHub Actions use YAML—migrate from older XML-based build definitions.

Web service integration

Bridge XML and YAML systems. Convert incoming XML to YAML for internal processing, then back to XML for legacy system responses.

What to Know About XML to YAML

XML attributes need handling. XML attributes can become nested keys (_attr), prefixed keys (@id), or merged with elements. Choose based on your needs.

Mixed content is complex. XML with both text and child elements requires special handling. The converter uses standard conventions for mixed content.

XML namespaces are preserved. Namespace declarations and prefixed elements are maintained in the YAML output for accurate round-trip conversion.

Single elements vs arrays. Repeated XML elements become YAML arrays. Single elements become scalar values or objects depending on content.

Pro tip: Validate the converted YAML. Complex XML structures (mixed content, namespaces) may need manual adjustment for your specific use case.

Common Questions

How are XML attributes handled?

Attributes typically become a nested _attributes key or use @ prefix. This preserves attribute data separately from element content.

Does it handle XML namespaces?

Yes. Namespace declarations and prefixed elements are preserved. The YAML output maintains namespace information for accurate conversion.

Can I convert back to XML?

Yes. Use the YAML to XML converter to reverse the process. Simple structures round-trip cleanly; complex XML may need adjustment.

How are empty elements handled?

Empty XML elements become null values or empty objects in YAML depending on context. Self-closing tags and empty element pairs are treated equivalently.

What about XML comments?

XML comments (<!-- -->) are converted to YAML # comments. Comment placement is preserved as closely as possible in the output.

Is the conversion lossless?

For most XML, yes. Some edge cases (mixed content, processing instructions) may not convert perfectly. Validate output for critical data.

Is my data secure?

Yes. All conversion happens locally in your browser. Your XML data never leaves your computer. Safe for sensitive documents.

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