JSON to YAML converter
Convert JSON into clean, readable YAML for configs and CI pipelines.
How to use
- Paste your JSON document into the input box.
- The YAML appears instantly in the result pane.
- Copy it into your docker-compose.yml, workflow file or config.
Frequently asked questions
Why are some strings quoted in the output and others not?
YAML re-interprets bare words: true becomes a boolean, 123 a number, and colons start mappings. The converter quotes exactly those strings that would change meaning, keeping the rest clean.
Can it convert YAML back to JSON?
Not yet — parsing YAML safely is a much larger task than emitting it. For the reverse direction, most languages' YAML libraries can dump JSON.
What indentation does it use?
Two spaces per level, the dominant convention in Kubernetes, GitHub Actions and most YAML style guides.
About this tool
YAML is the language of configuration — Docker Compose, Kubernetes manifests, GitHub Actions, CI pipelines — while data usually arrives as JSON. This converter turns any valid JSON document into clean YAML with two-space indentation, the convention virtually every tool expects. It is careful about YAML's sharp edges: strings that would be misread as other types ("true", "123", text with colons) are quoted automatically, so a version string like "1.10" doesn't silently become the number 1.1 when the YAML is parsed. Invalid JSON produces the exact parser error so you can fix the input rather than guess.