Content and text
JSON to YAML Converter
Turn JSON into clean, readable YAML for config files and docs.
Runs in your browser; nothing is uploaded. · Free, no account · 1 min
Importing a saved run into your account is coming soon. Until then, your last runs stay in this browser only, and you can download your files.
How to use
- Paste your JSON, or load the example.
- Choose a 2 or 4 space indent.
- If the JSON is invalid, fix it at the line and column shown.
- Copy the YAML or download it as a .yaml file.
What it checks and how it works
The JSON is parsed with the browser's JSON parser (RFC 8259) and written out with the yaml library as YAML 1.2. Strings that would be read as another type, such as "true", "null" or "123", are quoted so they round-trip back to the same JSON, and Arabic text is written as it is.
JSON-to-YAML conversion is lossless for data, but the layout is the library's: key order is kept, comments never existed in JSON, and long strings may be folded across lines. Convert back with the YAML to JSON tool to check a result.
Sources
- YAML Ain't Markup Language (YAML) revision 1.2.2 opened 29 Oct 2026
- eemeli/yaml documentation (the parser the tool uses) opened 29 Oct 2026
- RFC 8259: The JavaScript Object Notation (JSON) Data Interchange Format opened 29 Oct 2026
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Questions
About this tool
Yes for the data. Types and key order are kept, and strings that look like numbers or booleans are quoted to stay strings.
YAML would otherwise read them as another type, such as a number, a boolean or null. The quotes keep them as text.
The tool writes the block style that config files use. It does not offer the compact flow style.
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