Input (YAML)
user:
id: 1
name: Ada
roles:
- admin
- authorYAML → XML
About the YAML ↔ XML playground
The YAML ↔ XML converter transforms data between YAML and XML in either direction. Mapping keys become element names, sequences become repeated elements, and nested structures translate into nested markup; converting back reverses the process. This is handy when a human-friendly YAML config must feed a system that only accepts XML, or when you want to read an XML document in the more readable YAML form.
YAML is an indentation-based, human-readable data serialization format that supports mappings, sequences, scalars, and comments, and it is a superset of JSON. XML is a tag-based markup language built from nested elements, attributes, and a single root. Both can express hierarchical data, but their syntaxes differ greatly; the converter bridges YAML's whitespace structure and XML's explicit tags so the same data can live in either world.
HostedYAML ↔ XML runtime
mainentry file
single fileworkspace
stdinprogram input
How it works
1
Write
The main file is the entry point for each run.
2
Give it input
Use the Input panel to pipe standard input to your program when it needs data.
3
Run
Run sends your code to a fresh hosted runtime and streams the result into the output panel.
4
Keep or share
Your draft stays in this browser, and Share creates a separate snapshot link.
External resources
- yaml.org— Official website
Output (XML)
<user>
<id>1</id>
<name>Ada</name>
<roles>admin</roles>
<roles>author</roles>
</user>Input (XML)
<book>
<title>SQL</title>
<pages>120</pages>
</book>Output (YAML)
book:
title: SQL
pages: "120"Input (YAML nested)
order:
id: 7
customer:
name: AdaOutput (XML)
<order>
<id>7</id>
<customer>
<name>Ada</name>
</customer>
</order>Input (XML repeated)
<list>
<item>a</item>
<item>b</item>
</list>Output (YAML)
list:
item:
- a
- bInput (YAML scalars)
config:
enabled: true
retries: 3Output (XML)
<config>
<enabled>true</enabled>
<retries>3</retries>
</config>Input (YAML with special char)
note:
text: a & b < cOutput (XML, escaped)
<note>
<text>a & b < c</text>
</note>Input (XML nested repeated)
<team>
<member><name>Ada</name></member>
<member><name>Linus</name></member>
</team>Output (YAML)
team:
member:
- name: Ada
- name: LinusHow it works
The editor uses Monaco, the engine behind VS Code, with language-aware editing tools and familiar keyboard controls.
Both directions
Paste YAML to produce nested XML markup, or paste XML to read it as YAML.
Mapping keys become element names and sequences become repeated elements.
Nested YAML structures translate into nested XML and back again.
Bridging the syntaxes
YAML's indentation hierarchy maps to XML's explicit nested tags.
Sequence items become repeated sibling elements since XML lacks a list type.
A single root element wraps the document as XML requires.
When to use it
Feeding a human-friendly YAML config into a system that only accepts XML.
Viewing a dense XML document in the more readable YAML form.
Privacy
Both directions run in your browser — config data is never transmitted.
Paste sensitive YAML settings without them leaving the page.
Every shortcut, searchable:
Editing
Undo
Ctrl+Z
Redo
Ctrl+⇧+Z
Select next occurrence
Ctrl+D
Delete line
Ctrl+⇧+K
Move line up / down
Alt+↑ / ↓
Copy line up / down
Alt+⇧+↑ / ↓
Toggle comment
Ctrl+/
Indent line
Ctrl+]
Outdent line
Ctrl+[
Navigation
Find
Ctrl+F
Find & replace
Ctrl+H
Go to line
Ctrl+G
Go to symbol
Ctrl+⇧+O
Selection
Select all
Ctrl+A
Select line
Ctrl+L
Select all occurrences
Ctrl+⇧+L
Shortcuts follow your OS — ⌘ becomes Ctrl on Windows and Linux.
It converts data between YAML and XML in both directions, mapping YAML keys and sequences to XML elements and back again.
Yes. You can convert YAML to XML or XML to YAML. Note that YAML comments are lost when converting to XML, since XML stores them differently.
No. The conversion runs entirely in your browser, so your data never leaves your device.
Yes, it is free with no accounts or usage limits.
Each item in a YAML sequence becomes a repeated XML element sharing the parent key as its tag name, since XML has no dedicated array type.
yaml
xml
Output
XML output