Overview
Convert YAML to XML or XML back to YAML with a single click, using js-yaml - a spec-compliant parser - for the YAML side and the browser’s native DOMParser/XMLSerializer for the XML side, the same approach used elsewhere on this site rather than a hand-rolled parser for either format. YAML commonly has multiple top-level keys (a Kubernetes manifest’s apiVersion, kind, metadata, and spec, for example), but XML requires exactly one root element, so YAML with more than one top-level key gets automatically wrapped in a synthetic root element rather than rejected outright - documented explicitly so the behavior isn’t a silent surprise. Useful for converting a Kubernetes or CI config between the two formats, or reading legacy XML config as more compact YAML. Runs entirely client-side.
Best for: Converting a Kubernetes manifest or CI config between YAML and XML
How to use this tool
- Pick a direction. Switch between YAML → XML and XML → YAML with one click.
- Paste your input. Drop in YAML or XML - the sample updates to match whichever direction is selected.
- Read the converted output. The result updates live as you type, using spec-compliant parsing on both sides.
- Swap and repeat. Use the swap button to feed the output straight back in as new input.
Why use this tool
Spec-compliant on both sides
js-yaml handles YAML’s flexible syntax, and the browser’s native DOMParser handles XML - neither is a hand-rolled parser.
Handles multi-key YAML sensibly
Automatically wraps multi-key YAML (like a Kubernetes manifest) in a synthetic root element instead of rejecting it.
Consistent with the rest of the converter cluster
Uses the same attribute/text/array convention as the XML ⇄ JSON Converter, so the mapping is predictable across tools.
Nothing leaves your browser
Conversion happens entirely client-side - useful for real deployment manifests and config files.
Frequently asked questions
XML requires exactly one root element, but YAML very commonly has several top-level keys - a Kubernetes manifest has at least apiVersion, kind, metadata, and spec. Rather than rejecting that input, multi-key YAML is automatically nested under a synthetic <root> element so the conversion still works.
Yes - attributes become "@name" keys, text alongside attributes or children becomes "#text", and repeated child tags become a list, matching the XML ⇄ JSON Converter exactly so the mapping stays predictable if you use both tools.
Not always exactly - comments and YAML-specific formatting (anchors, flow style, key ordering in some edge cases) don’t have an XML equivalent and are lost in the conversion, and multi-key YAML gains a synthetic root element that wasn’t in the original. The data itself round-trips correctly; the surrounding formatting doesn’t.