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Nesting preserved
Objects and arrays retain their hierarchy as YAML mappings and sequences.
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Converter
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JSON to YAML
Convert valid JSON objects, arrays and scalar values to readable YAML while preserving nesting, strings, numbers, booleans, null and Unicode text.
Parse JSON before conversion Convert objects to YAML mappings Convert arrays to YAML sequences Preserve primitive value types
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INPUT JSON document to convert *
Paste the source value for this specific transformation. Example: Trexmi developer sample
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Result
Result ready to review and copy.
About the tool
What JSON to YAML does
JSON to YAML converts a valid JSON value into a readable YAML representation. JSON objects become mappings, arrays become sequences and nested structures use two-space indentation.
Strings, numbers, booleans, null values and Unicode text are preserved by type. Strings that could be mistaken for YAML syntax or implicit values are quoted in the output. Because JSON has no comments, anchors, tags or block-scalar style, the converter does not invent those YAML features.
How to use
- Paste complete JSON. Use double quotes for strings and property names; remove comments and trailing commas.
- Convert. The source is parsed before any YAML is emitted.
- Inspect structure. Compare object keys, array order, nesting and scalar values.
- Check quoted strings. Quoting may be added to preserve values that resemble booleans, numbers, null or YAML punctuation.
- Test the target parser. Validate the output in the application or CI pipeline that will consume it.
Built for the task
Why use JSON to YAML?
Focused controls, predictable output, and a workflow designed around this exact transformation.
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JSON validation first
Malformed JSON is rejected instead of producing partial YAML.
03
Safer scalar quoting
Ambiguous strings are quoted so their text meaning remains visible.
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Readable output
Two-space indentation produces a compact configuration-style result.
Useful answers
Questions about JSON to YAML
Practical details about input, output, privacy, limits, and the best way to use this tool.
01 Can the converter accept a JSON array at the root?
Yes. A root array becomes a YAML sequence.
02 Does it validate JSON first?
Yes. Invalid JSON produces an error and no YAML output.
03 Are array items reordered?
No. JSON array order is preserved.
04 Why are some strings quoted?
Strings containing YAML punctuation, whitespace controls or values that look like booleans, null or numbers are quoted to preserve their string meaning.
05 Are JSON comments preserved?
No. Standard JSON does not support comments, so there are no comments to transfer.
06 Does it create YAML anchors or aliases?
No. The output uses plain mappings, sequences and scalar values.
07 Will converting back reproduce identical formatting?
No. Data structure can be preserved, but whitespace, quote style and other presentation details are not a round-trip guarantee.
08 Why test another YAML parser?
YAML implementations can differ in supported features and schema rules. The destination parser remains authoritative.
Learn JSON
Read the complete JSON Guide
Learn JSON objects, arrays, value types, validation, formatting, parsing, API workflows, and common syntax errors.
- Objects, arrays, and values
- Validation and formatting
- API and parsing workflows
Read guide
Practical explanations and examples
Object and array conversion
A JSON object becomes a YAML mapping with one key per line. A JSON array becomes a dash-prefixed sequence in the same order. Nested collections are indented by two spaces per level, making the hierarchy visible without braces or brackets.
Scalar values
JSON true, false, null and numeric values remain typed YAML scalars. Strings remain strings. When a string contains punctuation with YAML meaning or resembles an implicit scalar such as true, null or a number, the emitter adds JSON-compatible double quotes.
Features that are not created
JSON cannot represent YAML comments, anchors, aliases, custom tags or block-scalar style. This converter produces a straightforward data representation rather than attempting to manufacture configuration-specific YAML conventions.
Validate the source and result
Use JSON Formatter when the source is difficult to inspect. After conversion, run YAML Validator and then the parser used by the destination. Use YAML to JSON for the reverse direction, while expecting formatting differences.
Standards and privacy
See RFC 8259 for JSON and the YAML 1.2.2 specification for YAML. Remove secrets from production configuration before using an online conversion tool.