YAML to JSON Converter

YAML to JSON converts between the two formats configuration lives in. YAML is pleasant to write and unforgiving about indentation; JSON is noisy to write and completely unambiguous. Moving between them is a daily job for anyone working with CI pipelines, Kubernetes manifests or application config.

The parser covers the YAML that appears in real configuration files: nested maps and sequences, quoted and unquoted scalars, block scalars with the pipe and greater-than indicators, inline flow collections, comments, multiple documents separated by three dashes, and the usual scalar types including booleans, nulls, integers and floats.

It does not implement the full YAML specification, which is substantially larger than most people realise and includes features such as anchors, aliases, merge keys and custom tags. Those are reported clearly rather than being misread, so you are told what is unsupported instead of receiving quietly wrong output.

• YAML to JSON and JSON to YAML
• Nested maps and sequences at any depth
• Block scalars with literal and folded styles
• Inline flow collections
• Comments handled and preserved where the format allows
• Multiple documents separated by three dashes
• Clear errors naming the line and the problem
• Unsupported features reported rather than misread

The yaml to json converter is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

• Converting a CI pipeline config to inspect it as JSON
• Turning a JSON API response into readable YAML
• Checking that a manifest's indentation is valid
• Moving configuration between two tools
• Finding the line where a YAML file goes wrong