CONVERT · ENTIRELY IN YOUR BROWSER
JSON to YAML
Make strict JSON easier to read as YAML configuration while preserving strings, booleans, arrays, and object structure.
JSON to YAML workspace
LOCAL WORKSPACEYour converted data will appear here.
Table preview · up to 5 rows and 20 columns
A PRACTICAL EXAMPLE
See the transformation.
Input
{"app":"TidyFormats","private":true,"formats":["JSON","CSV"]}Output
app: TidyFormats
private: true
formats:
- JSON
- CSV
How to use JSON to YAML
- Paste valid JSON or open a JSON file.
- Convert to YAML.
- Review the output and download converted.yaml.
Keep configuration strings distinct from booleans
The serializer quotes strings when YAML could otherwise interpret them as another type. A string containing true is not the same value as the boolean true. The generated YAML is data, not a validation of any particular deployment configuration.
Input
{"enabled":true,"label":"true","code":"00123"}Output
enabled: true
label: "true"
code: "00123"
Common problems and how to fix them
My JSON contains comments or trailing commas
Remove them before converting. JavaScript object literals and JSON-with-comments are not strict JSON; property names and strings must use double quotes.
My deployment still rejects the YAML
Valid YAML is not necessarily valid configuration for your application. Check required fields and allowed values using that application’s own validator.
Can I round-trip the document without changes?
Supported data types can be converted back, but whitespace, quoting style and comments will not round-trip. Large numeric identifiers should be strings before the first conversion.
Limitations and supported input
Input must be strict JSON: no comments or trailing commas. Original formatting is not retained. JavaScript number precision applies; quote large integer identifiers before conversion.
Files must be UTF-8 text and no larger than 10 MiB. Very deep or complex documents may exceed the 15-second processing limit. JSON numbers use JavaScript precision; keep long identifiers as strings.
Your data stays on your device
All parsing and conversion happens in a local browser worker. Your input is not sent to a server or saved in browser storage. Closing or reloading the page clears this workspace. Read our privacy explanation.
GOOD TO KNOW
A little clarity.
Simple tools. Straight answers.
Will strings that look like numbers stay strings?
Yes. The YAML serializer quotes values when needed to preserve their type.
Can I add comments to the output?
After downloading, you can add YAML comments in your own editor. The converter does not invent comments.
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