JSON YAML Converter
Convert JSON to YAML and YAML back to JSON in the browser.
- Runs locally in your browser
- No upload required
Try it
Supported formats
Privacy
Runs entirely in your browser. Your input is never uploaded, stored, or sent to a third party.
Converted 43 characters from json to yaml.
How it works
- Parsed the input with the pure in-browser engine.
- Applied YAML 1.2 block-style output or core-schema input typing.
- Collected an explicit warning for every lossy transformation.
- The conversion produced 0 warning(s); warnings are shown before the result.
Methodology
- Parse JSON with the F054 verbatim scanner, or YAML with the F056 block/flow parser.
- Emit JSON to YAML as 2-space block style, quoting scalars that would be misread.
- Resolve YAML plain scalars with the YAML 1.2 core schema and report lossy steps.
Usage
- Choose JSON to YAML or YAML to JSON.
- Paste the document.
- Run the tool; read any warnings before copying the result.
Examples
These are examples, not current values: they use fixed inputs, while the interactive tool computes live results in your browser.
JSON to YAML
{
"text": "{\"name\":\"gampangin\",\"tags\":[\"json\",\"yaml\"]}",
"direction": "json-to-yaml"
}YAML to JSON
{
"text": "name: gampangin\ntags:\n - json\n - yaml",
"direction": "yaml-to-json"
}Limitations
YAML scalar typing
On input, plain scalars are resolved with the YAML 1.2 core schema: null, booleans, integers and floats become JSON values, and quoted scalars stay strings.
Frequently asked questions
- Which YAML version is used?
- Block-style output and YAML 1.2 core-schema scalar typing on input; anchors, aliases, tags and multiple documents are rejected.
- Does JSON to YAML round-trip exactly?
- For JSON-compatible documents it does; scalars that YAML cannot represent as JSON text are reported as warnings.
- Is my data uploaded?
- No. The conversion runs entirely in your browser and is never sent anywhere.
Sources
- YAML 1.2.2 Specification — YAML Language Development Team
- RFC 8259 — The JavaScript Object Notation (JSON) Data Interchange Format — IETF
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