ToolKit

Developer Tools

Free JSON to YAML Converter Online

Convert JSON to YAML or YAML to JSON. Bidirectional, with syntax validation.

Key YAML rules

Indentation
Use 2 spaces per level — tabs are not allowed in YAML
Comments
Lines starting with # are ignored by YAML parsers
Booleans
true/false/yes/no/on/off — quote them if you mean strings
Null values
null and ~ both mean null in YAML
Multiline
| preserves newlines, > folds them into spaces

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