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YAML to JSON Converter - Convert YAML โ†” JSON Online

Free online YAML to JSON converter. Easily convert between YAML and JSON formats. Supports bidirectional conversion, pretty print, and error validation. No signup required.

YAML to JSON Converter Online

This YAML to JSON converter tool allows you to easily convert between YAML and JSON formats. Simply paste your YAML or JSON data, and the tool will convert it to the other format instantly. Features include bidirectional conversion, customizable JSON indentation (2 or 4 spaces), sample data loading, and clear error messages for invalid input. All processing happens in your browser โ€” your data never leaves your device.

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FAQ

How do I convert YAML to JSON?
Paste your YAML content in the input panel and click Convert. The tool parses YAML syntax (indentation, arrays, nested objects) and outputs properly formatted JSON with correct types, arrays, and nested structures.
What are the differences between YAML and JSON?
YAML supports comments, uses indentation for nesting, allows multi-line strings, and has aliases/anchors. JSON uses braces and brackets, has no comments, and is more strict. JSON is better for APIs; YAML is better for config files.
Can YAML represent everything JSON can?
Yes, YAML is a superset of JSON. Any valid JSON is also valid YAML. YAML additionally supports comments, anchors/aliases, multi-line strings, and more data types. Converting YAML to JSON may lose comments and anchors.
Why do Kubernetes and Docker use YAML?
YAML is more human-readable for configuration files. Comments help document settings. The indentation-based structure is cleaner for deeply nested configs. YAML support for multi-line strings is essential for embedding scripts and templates.