YAML ↔ JSON Converter
/yaml-json-converterConvert YAML to JSON or JSON to YAML in both directions. Ideal for config files and CI pipelines.
YAML is the language of config files and CI pipelines, while JSON rules API payloads — and you frequently need both. This converter translates between the two while preserving nesting and data types. It handles common YAML features like anchors, comments, and multi-line strings. Conversion runs entirely in your browser.
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FAQ
Frequently asked questions
Everything you need to know about yaml ↔ json converter.
Is YAML validation included?
Yes. Invalid YAML raises an error from the parser with a message pointing at the problem location, so you know what to fix.
Does it handle nested structures?
Yes. Arbitrary nesting depth, arrays, and scalar types convert cleanly in both directions using the js-yaml library.
Why is the JSON output always indented by two spaces?
The converter pretty-prints with a fixed 2-space indent for readability. There is no indentation option for the output.
Can I convert JSON back to YAML?
Yes. Switch to the JSON to YAML mode, or click Swap after a conversion to flip the result back into the input.
Are YAML comments preserved?
No. Comments are ignored while parsing, so they are lost when converting YAML to JSON and do not reappear on conversion back.
Is my data uploaded?
No. Conversion runs entirely in your browser with js-yaml, so configs and secrets stay local and are never transmitted.
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