Free Online YAML to JSON Converter

Convert YAML data to JSON format instantly. Handles key-value pairs, nested structures, lists, and common YAML syntax with a lightweight parser.

How the YAML to JSON Converter Works

This lightweight client-side parser handles key-value pairs, nested objects via indentation, lists with dash syntax, quoted strings, numbers, booleans, and null values.

Supported YAML Features

Scalar values, nested mappings, sequences, quoted strings, and comments. Handles most common YAML in docker-compose, GitHub Actions, and Kubernetes manifests.

YAML vs JSON Comparison

YAML is designed for human readability with minimal syntax. JSON is optimized for machine parsing. YAML supports comments while JSON does not. Converting YAML to JSON is useful for JavaScript applications and APIs.

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Frequently Asked Questions

What YAML features are supported?
Key-value pairs, nested objects, lists with dashes, quoted strings, numbers, booleans, null values, and comments.
Does it support multi-line strings?
This basic parser does not support | and > operators. Wrap multi-line values in quotes or use a full YAML library.
How does indentation affect parsing?
YAML uses indentation for nesting. Consistent indentation (typically 2 spaces) indicates child relationships. Mixing tabs and spaces causes errors.
Can I convert JSON back to YAML?
This tool only converts YAML to JSON. YAML formatting preferences cannot be automatically determined from JSON.
Is this parser production-grade?
It is a lightweight parser for common patterns. For full YAML 1.2 spec support with anchors and aliases, use a library like js-yaml.

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