Does it preserve comments when converting YAML to JSON?

No, JSON doesn't support comments as a format, so any comments in the source YAML are necessarily dropped in the conversion.

Does it validate the YAML or JSON before converting?

Yes, invalid syntax in either format is flagged rather than silently producing an incorrect result.

Can it handle deeply nested structures?

Yes, nested objects and arrays convert correctly between both formats regardless of nesting depth.

Does YAML ↔ JSON Converter upload my files to a server?

No. YAML ↔ JSON Converter runs entirely in your browser using on-device processing, your files never leave your device.

YAML ↔ JSON Converter

Convert between YAML and JSON.

Runs in your browser

Input (YAML or JSON)

Runs entirely in your browser, nothing is sent to a server.

About this tool

YAML and JSON represent the same kind of structured data with different syntax, and configuration files, APIs and tooling don't always agree on which one they expect. This tool converts between YAML and JSON in either direction, letting you work with whichever format a specific config file, API or tool actually requires.

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