Developer Tools
YAML to JSON Converter Online Free
Convert YAML configs to JSON for APIs and tools. Free and private — conversion runs in your browser with no signup and no data uploaded.
Free · Runs in your browser · No signup · Files stay on your device
Paste YAML, keep line numbers visible, and convert or copy JSON inside fullscreen mode.
Quick examples
{
"services": {
"web": {
"image": "nginx:stable",
"ports": [
"8080:80"
],
"environment": {
"NODE_ENV": "production"
}
}
}
}How to use
How to use YAML to JSON Converter Online Free
- 1Paste your YAML configuration into the input area.
- 2Click Convert to JSON to parse and convert.
- 3Copy the JSON output using the Copy JSON button.
Tips
Quick tips
- This is a lightweight YAML parser that handles common structures.
- For highly complex YAML (anchors, multi-line blocks), consider a full YAML library.
- Great for quickly converting Kubernetes or Docker Compose configs to JSON.
FAQ
Frequently asked questions
What YAML features are supported?
This lightweight parser handles standard key-value pairs, nested objects, arrays (dash notation), strings, numbers, booleans, and null values. It covers the most common YAML patterns used in configuration files.
What YAML features are NOT supported?
Advanced features like anchors (&), aliases (*), multi-line block scalars (| and >), and custom types are not fully supported. For these, a full-featured YAML library is recommended.
Can I convert Kubernetes manifests?
Yes, for straightforward manifests with standard key-value pairs and lists. Complex manifests with anchors or multi-document streams may need a full YAML parser.
Is the output valid JSON?
Yes. The output is valid, properly formatted JSON with 2-space indentation that can be used in any JSON-compatible tool or API.
Is my data safe?
Yes. Conversion happens entirely in your browser. No data is sent to any server.
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