JSON ↔ YAML Converter
Convert JSON to YAML or YAML to JSON instantly in your browser. No upload required — all processing happens client-side.
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used for configuration files. It uses indentation to represent structure, making it easier to read than JSON for complex nested data.
Is this converter lossless?
The JSON → YAML direction is lossless for all standard JSON types (objects, arrays, strings, numbers, booleans, null). YAML → JSON uses a simplified parser that covers common YAML patterns; complex YAML features like anchors, aliases, and multi-line scalars are not supported.
Why might YAML → JSON fail?
This tool uses a lightweight built-in parser that handles common YAML. If your YAML uses advanced features such as anchors (&), aliases (*), custom tags (!), or complex multi-line block scalars, parsing may fail. For production use, consider a full YAML library.