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YAML to XML Converter

YAML back into well-formed XML — lists as repeated tags, @keys as attributes.

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Drop a YAML file here, or click to choose one

Converted on your device — the file is never uploaded

XML

Quick Tool Overview

The YAML to XML Converter writes well-formed XML from YAML, turning lists into repeated elements or a wrapped parent, @keys into attributes, and illegal key names into safe ones.

What it does
Converts YAML to XML
You give it
A YAML mapping
You get back
Well-formed, indented or minified XML
Best for
Feeding SOAP endpoints and legacy importers
Converters Free, unlimited use No sign-up Runs in your browser

About the YAML to XML Converter

Modern tooling speaks YAML; plenty of enterprise systems, SOAP endpoints and legacy importers still demand XML. Writing the XML by hand is a chore, and the details that break it — a key starting with a digit, a list that needs repeating tags, a value containing an ampersand — are exactly the ones easiest to miss.

Paste YAML and get well-formed XML. Choose the root element name and what list entries are called, repeat the key for each entry or wrap lists in a parent element, and keep or drop the <?xml?> declaration. Keys beginning with @ become attributes and a #text key becomes element text, matching the convention the XML to YAML tool reads. Characters that must be escaped are escaped, and keys that are not legal XML names are rewritten rather than producing a broken document.

Key features of the YAML to XML Converter

You name the elements

Choose the root element and what list entries are called.

Two list styles

Repeat the key per entry, or wrap entries in a parent element.

Attributes from @keys

@id becomes id="…" and #text becomes the element text.

Always well-formed

Invalid tag names are rewritten and & < > are escaped in text and attributes.

Indent or minify

Two spaces, four spaces, or a single line for transport.

How to use the YAML to XML Converter

  1. 1

    Paste the YAML

    A mapping at the top level — XML needs a single root to hang everything from.

  2. 2

    Name the root and list entries

    For example root and item, or invoice and line.

  3. 3

    Choose the list style

    Repeat the key per entry, or wrap the entries in a parent element.

  4. 4

    Copy or download the XML

    Indented for reading, or minified to one line.

Frequently asked questions

An XML document has exactly one root element, so it needs a named structure to start from. A top-level list is wrapped in the root element you name, and a single scalar cannot be converted at all.

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