YAML is a human-readable data format widely used in Docker Compose, Kubernetes, CI/CD pipelines, and configuration files. Converting JSON to YAML makes data easier to read and edit by hand — YAML uses indentation instead of brackets and quotes.
JSON uses curly braces, square brackets, and double-quoted strings. YAML uses indentation and colons — no braces or quotes needed for simple strings. For example, {"name":"Alice"} in JSON becomes name: Alice in YAML.
Arrays are rendered with an index-based structure — each item starts with - index: n followed by its value or nested properties. Empty arrays are represented as [] and empty objects as {}.
Strings containing special YAML characters (like : # [ ] { }) or reserved words (true, false, null, yes, no) are automatically wrapped in double quotes with proper escaping to ensure valid YAML output.
Yes. JSON true/false are output as YAML true/false, and JSON null is output as null. Numeric values are written without quotes. Only strings that could be mistaken for these types are auto-quoted.
You can upload JSON files up to 100MB. All conversion happens entirely in your browser — your data is never sent to any server.