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Hazuu Tools

YAML to JSON Converter

Convert YAML to JSON format — paste, convert, and copy instantly.

Input YAML
Output JSON
Converted JSON will appear here...
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About YAML to JSON Converter

YAML to JSON Converter is a free online tool that transforms YAML data into clean, formatted JSON. YAML is widely used in configuration files for tools like Docker Compose, Kubernetes, GitHub Actions, and other CI/CD pipelines due to its human-readable syntax. JSON, on the other hand, is the standard data interchange format for APIs, JavaScript applications, and many programming environments.

This tool uses the js-yaml library to parse your YAML input entirely in your browser — no data is ever sent to a server. It accurately preserves all data types including strings, numbers, booleans, nulls, arrays, and nested objects, giving you reliable JSON output every time.

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How to Use

01

Paste YAML

Copy your YAML data and paste it into the left input pane.

02

Convert

Click "Convert" to transform your YAML into JSON format.

03

Copy Result

Use the copy button to grab your JSON output.

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Frequently Asked Questions

What is YAML to JSON Converter? expand_more
YAML to JSON Converter is a free online tool that converts YAML markup into equivalent JSON data. It parses your YAML structure and outputs properly formatted JSON that can be used in APIs, configuration files, and JavaScript applications.
Does it preserve data types? expand_more
Yes. The converter accurately preserves all YAML data types including strings, numbers, booleans, nulls, arrays, and nested objects. The resulting JSON faithfully represents the same data structure as your original YAML.
Is my data secure? expand_more
Yes. All conversion happens entirely in your browser using JavaScript. No data is sent to any server, ensuring your configuration files and sensitive data remain completely private and secure.
What YAML features are supported? expand_more
The tool supports all standard YAML features including scalars (strings, numbers, booleans, nulls), sequences (arrays), mappings (objects), anchors and aliases, multi-line strings (literal and folded block scalars), and inline flow syntax.
Can I use multi-document YAML? expand_more
Only the first document in a multi-document YAML file is converted. If your YAML contains multiple documents separated by ---, only the content of the first document will appear in the JSON output.