Create configuration drafts
Convert JSON examples into readable YAML for deployment, automation and documentation files.
100% local · files never leave your browser
Convert tool
JSON to YAML Converter
Convert JSON to readable YAML locally in your browser for configuration, documentation and review.
✓ Free to use✓ No signup✓ Runs locally
160 bytes · local only
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Processed entirely in this tab
Your input and result are not sent to JSON Hearth or stored on a server.
When to use it
What JSON to YAML helps you do
JSON and YAML can represent many of the same data structures. YAML is often easier for humans to edit, while JSON has stricter syntax.
Review nested data
Use YAML's indentation-focused representation to inspect objects and arrays.
Migrate examples
Translate sample payloads when a tool or project expects YAML rather than JSON.
How it works
JSON to YAML, without the upload.
Add your data
Paste a value, open a local file or begin with the working sample.
Run the tool
The transformation executes in your browser, not on our servers.
Review the result
Check the output, then copy or download it for your next task.
Important limitations
What to check before using the result
Review required
Comments and formatting preferences cannot be inferred from JSON because JSON does not contain them.
Review required
Some YAML features have no direct JSON equivalent and will not be introduced automatically.
Common questions
About JSON to YAML
Does JSON to YAML Converter upload my data?
No. Your input is processed by code running in your browser and is not sent to an application server.
Is JSON to YAML free to use?
Yes. The tool is free, requires no account and can be used directly in the browser.
Will JSON comments be included in YAML?
Standard JSON has no comments, so there are no comments available to carry into the YAML output.
Are JSON and YAML always interchangeable?
Their common data model overlaps heavily, but YAML supports additional syntax and types that may not round-trip through JSON.