How it works
The JSON to YAML Converter transforms a JSON object or array into clean, readable YAML format — converting JSON's brace-and-bracket syntax to YAML's indentation-based structure.
YAML is generally more readable than JSON for configuration files because it has no brackets, fewer quotes, supports comments, and handles multi-line strings naturally. Many developers prefer writing configuration in YAML but need to output JSON for APIs or storage.
How to use it: paste your JSON. The converter produces correctly indented YAML with 2-space indentation per level. JSON objects become YAML mappings, arrays become YAML sequences, strings are quoted when necessary (containing special characters or looking like non-string types), numbers and booleans are unquoted.
Output style decisions: string values are quoted only when they would be ambiguous without quotes (e.g., a string "true" is quoted to prevent it from being interpreted as a boolean). Numeric strings like "42" are quoted. All other strings use bare (unquoted) style for readability.
Multi-line strings: long string values are converted to YAML's folded block scalar (>) format, breaking them into readable lines. This is especially useful for embedding SQL queries, markdown content, or long descriptions in YAML config files.
Frequently Asked Questions
- Only when necessary. Strings are output bare (unquoted) unless they look like other YAML types (booleans, numbers, null) or contain special characters. This produces the most readable YAML output.
- JSON null is converted to YAML ~ (tilde), which is the compact YAML representation of null. Both ~ and the word null are valid in YAML.
- The converter does not generate comments — JSON has no comment syntax to convert from. You can manually add YAML comments (# comment) to the output after copying it.
- Yes. The YAML output follows standard YAML 1.2 formatting compatible with Kubernetes, Docker Compose, GitHub Actions, and other tools that parse YAML configuration.