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YAML to XML Converter
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Modern tooling emits YAML, but plenty of systems still only accept XML — enterprise integrations, older importers, and services with SOAP interfaces among them. This converter bridges that gap: YAML keys become XML elements, nested maps become nested elements, and sequences become repeated elements rather than something an XML consumer would reject. Characters that are special in XML are escaped automatically, so an ampersand or angle bracket in your data cannot break the resulting document. The output is indented and well-formed, ready to hand to whatever expects it. Paste your YAML, check it parses, and copy the XML out. The whole conversion happens client-side in your browser, so configuration containing credentials or internal hostnames is never uploaded anywhere.
Features
- Maps YAML keys to XML elements and values to text
- Converts sequences into repeated elements
- Escapes &, <, >, and quotes so output is well-formed
- Sanitises keys that are not valid XML element names
- Handles nested maps and multi-line strings
- Reports YAML parse errors before converting
- Indented, readable output ready to import
- Fully client-side — nothing is uploaded
Why use this yaml to xml converter?
- Feeds YAML-based config into XML-only systems
- Guarantees well-formed output with correct escaping
- Keeps credentials and hostnames on your machine
- Instant results with no size limit
- Free with unlimited conversions
Frequently asked questions
How are YAML lists converted?
Each item becomes a repeated element under the parent, which is the conventional way to express a list in XML since XML has no dedicated array type.
What happens to keys that are not valid XML names?
Keys containing spaces or symbols, or starting with a digit, are sanitised into valid element names so the output stays well-formed.
Are special characters escaped?
Yes. Ampersands, angle brackets, and quotes are converted to XML entities, so data containing them cannot break the document.
Why will my YAML not convert?
It failed to parse. The usual causes are tab characters used for indentation, inconsistent indentation, or a missing space after a colon or dash.
Does the output include an XML declaration?
The document is emitted with a single root element wrapping your content, which is what XML requires. Add or adjust the declaration if your consumer expects a specific encoding.
Is my YAML uploaded?
No. Conversion runs entirely in your browser and the document is never transmitted or stored.