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JSON ↔ YAML Converter
Convert between JSON and YAML formats. Auto-detect input format. Runs entirely in your browser — nothing is uploaded.
Input
Output
JSON vs YAML
Both formats represent the same data structures. JSON uses braces and brackets, YAML uses indentation. Choose based on your use case: JSON for APIs, YAML for configuration files.
JSON
Compact, widely supported, great for APIs. No comments allowed.
YAML
Human-readable, supports comments. Popular for Docker, K8s, CI/CD config.
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It uses indentation to define structure instead of brackets and braces, making it popular for configuration files like Docker, Kubernetes, and CI/CD pipelines.
When should I use JSON vs YAML?
JSON is better for APIs and data interchange because it's compact and widely supported. YAML is better for configuration files because it's more readable and supports comments. Use JSON for programs, YAML for humans.
Is this converter accurate?
This tool handles standard JSON and YAML including strings, numbers, booleans, null, arrays, and nested objects. For complex YAML features like anchors and multi-line strings, use a dedicated library.