100% Client-Side

XML to YAML & YAML to XML Converter (Attribute & Array Mapping)

Convert XML documents bidirectionally to YAML 1.2 with custom XML attribute prefixing (@_), CDATA handling, array normalization, and real-time syntax validation.

XML Attribute Prefix:

YAML Indentation:

Samples:

Source XML / YAML Configuration (XML)23 lines

Converted Output (YAML 1.2)

100% Client-Side Privacy

Your confidential XML payloads, SOAP requests, and configuration files are processed completely inside your browser without uploading to external servers.

Attribute & CDATA Parity

Accurately distinguishes node attributes from child tags using customizable prefix tokens (@_) and maps repeated siblings into clean YAML sequence arrays.

Bidirectional Transpilation

Instantly toggle between XML-to-YAML and YAML-to-XML with customized indentation levels, single-click copy, and file downloads.

Technical Reference & Architecture Guide

XML to YAML & YAML to XML Developer Guide — Reference Guide

Complete architecture guide for bidirectional transpilation between XML documents and YAML 1.2 with custom attribute prefixing, CDATA preservation, and array normalization.

Key Parameters & Controls

attributePrefixstring ('@_' | '_' | '')

Prefix character sequence assigned to XML attributes when mapping into YAML dictionary keys.

textNodePropertystring ('#text' | 'value')

Key identifier used when an XML element contains both attributes and inner text content.

cdataPreservationboolean

Preserve unescaped character data (<![CDATA[...]]>) as literal multi-line YAML block scalars.

indentationinteger (2 | 4)

Number of space characters used for indentation levels in the generated YAML.

Pro Tips & Best Practices

When converting repeated XML siblings into YAML, ensure they map into homogeneous sequence arrays rather than overwriting duplicate keys.

Use '@_' as the attribute prefix to cleanly distinguish XML node attributes from child element tags without name collisions.

For large SOAP or Maven pom.xml files, check namespace prefixes (xmlns) to avoid unintentional key collisions.

Common Gotchas & Troubleshooting

Check your source XML for missing closing tags and ensure exactly one top-level root element encapsulates the document.

Ensure attribute values are explicitly quoted in YAML output to prevent automatic numeric coercion.

Frequently Asked Questions

How are self-closing XML tags like <item /> represented in YAML?▼

Self-closing tags without attributes are mapped to null or empty objects (~) in YAML.

Can I convert YAML back into valid XML?▼

Yes. The tool supports full bidirectional conversion from YAML back to well-formed XML documents.

Is my XML file uploaded to any remote server?▼

No. The entire XML DOM parser and YAML serialization engine run locally in your web browser.

Does this tool handle XML comments?▼

XML comments are safely stripped during AST generation to produce clean, valid YAML structures.

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