JSON YAML Converter
Convert between JSON and YAML data formats. Free, fast, and works entirely in your browser with no sign-up required.
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JSONInput
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YAMLOutput
Converted YAML will appear here
JSON / JSON5
JavaScript Object Notation. Universal data interchange. Strict standard; JSON5 extends it with comments, trailing commas, and unquoted keys.
YAML
Human-friendly data serialization. Used in Docker, Kubernetes, GitHub Actions, and CI/CD. Supports comments, anchors, and multi-line strings.
TOML
Tom's Obvious Minimal Language. Used in Rust (Cargo.toml), Python (pyproject.toml). Designed to be unambiguous, readable, and have clear semantics.
All conversions run entirely in your browser — no data ever leaves your device.