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NeatUtility

YAML to XML & XML to YAML Converter

YAML, TOML & Config100% Client-Side
Ready
YAML
0 lines0 chars
0 B / 4.77 MB
About this tool, examples & FAQ

Convert bi-directionally between YAML configuration files and structured XML markup documents. Preserves lists, nested mappings, and data types entirely in your browser with built-in XXE protection.

Key facts

Verified capabilities and limits of this utility
OperationsYAML to XML (default) and XML to YAML
Configuration Options2 or 4 spaces indentation, custom root tag name, and attribute prefixes
Safety & Privacy100% browser-side parsing with XXE protection; no server requests
Maximum Input5 MB
Execution Deadline3 s

How to use

  1. Paste YAML configuration or XML markup into the input editor.
  2. Select your conversion direction: YAML → XML or XML → YAML.
  3. Configure indentation (2 or 4 spaces) and root element names as needed.
  4. Click Convert (or press Ctrl/Cmd + Enter) to transform the document.
  5. Copy or download the converted output or Send To another connected utility.

Examples

YAML to XML Conversion

Input

app:
  title: DevTools
  port: 3000

Example output

<app>
  <title>DevTools</title>
  <port>3000</port>
</app>

XML to YAML Conversion

Input

<app>
  <title>DevTools</title>
  <port>3000</port>
</app>

Example output

app:
  title: DevTools
  port: 3000

Edge cases

YAML comments dropped

Standard XML does not have a lossless 1:1 mapping for trailing or inline YAML comments, so comments are omitted during translation.

Enclosing root element in XML

XML standards mandate a single top-level root node. If YAML contains multiple root properties or a top-level sequence, it is enclosed inside the configured root tag name.

XXE injection safety

External DTD entities and recursive expansion attempts are detected and rejected prior to parsing XML.

How it works

  1. Parses YAML using yaml parser or XML using Fast XML Parser.
  2. Normalizes hierarchical mappings, sequences, attributes, and text values.
  3. Applies indentation and root wrapper settings.
  4. Serializes the resulting output document in an isolated client-side Web Worker.

Frequently asked questions

Are YAML multi-document streams supported?

The converter expects single-document YAML configurations. Separate multi-document streams into individual files for conversion.

Can I convert Kubernetes or Ansible YAML to XML?

Yes. Standard Kubernetes manifests, Helm values, and Ansible playbooks can be transformed to XML markup.

Does this tool upload my configuration to any server?

No. All parsing and conversion occurs completely in your browser. No data ever leaves your computer.

References