JSON to YAML Converter
Convert JSON to clean, readable YAML in your browser — proper indentation, block sequences and safe quoting. Copy or download.
About the JSON to YAML Converter
This converter transforms JSON into clean, human-readable YAML. Objects become indented mappings, arrays become block sequences with dashes, and strings are quoted only when necessary to stay unambiguous. The result is the kind of tidy YAML you'd write by hand for a config file.
YAML is the format of choice for Kubernetes manifests, CI pipelines, Docker Compose and countless app configs. Converting existing JSON is far faster than rewriting it, and the output is ready to drop straight into your project.
Everything runs locally in your browser using a built-in serialiser, so your data never leaves your machine.
How to Use the JSON to YAML Converter
- 1Paste your JSON into the input box.
- 2Choose an indentation size.
- 3Click Convert to generate YAML.
- 4Copy the YAML or download it as a .yaml file.
Frequently Asked Questions
Is YAML always convertible from JSON?
Yes — JSON is actually a subset of YAML, so any valid JSON has an equivalent YAML representation. This converter produces the readable block style (indented mappings and dash-prefixed sequences) rather than JSON-like flow style.
When does the converter add quotes to strings?
Only when needed to avoid ambiguity — for example a string that looks like a number, boolean or null ("true", "123"), is empty, or contains special characters. Plain, safe strings are left unquoted for readability, matching how experienced authors write YAML.
How are nested objects and arrays formatted?
Nested objects are indented under their key, and arrays become block sequences where each item starts with a dash. Deeply nested structures indent consistently at the size you pick (2 or 4 spaces), producing clean, diff-friendly YAML.
Can I convert YAML back to JSON?
Yes — use the YAML to JSON Converter for the reverse. A JSON→YAML→JSON round trip preserves your data, since both formats represent the same underlying structures.
Is my JSON sent anywhere?
No. Conversion runs entirely in your browser. Nothing is uploaded, so it's safe for configs containing secrets or internal details.