Convert between YAML and JSON formats. Validate, format, and transform your data instantly.
YAML and JSON are two of the most widely used data serialization formats in software development. JSON is the lingua franca of web APIs, while YAML is preferred for configuration files due to its human-readable syntax.
YAML is a strict superset of JSON, meaning every valid JSON document is also valid YAML. YAML adds features like comments, anchors, and multi-line strings that make it ideal for configuration management in tools like Kubernetes, Docker Compose, and CI/CD pipelines.
Kubernetes Config
Convert K8s YAML manifests to JSON and back
CI/CD Pipelines
Transform GitHub Actions or GitLab CI configs between formats
API Configuration
Convert OpenAPI/Swagger specs between YAML and JSON
Docker Compose
Work with Docker Compose files in either format
What is the difference between YAML and JSON?
YAML (YAML Ain't Markup Language) and JSON (JavaScript Object Notation) are both data serialization formats. YAML uses indentation and is more human-readable, while JSON uses braces and brackets and is natively supported in JavaScript. Both can represent the same data structures.
Can YAML represent everything JSON can?
Yes, YAML is a superset of JSON. Every valid JSON document is also valid YAML. YAML additionally supports comments, anchors, aliases, and multi-line strings that JSON does not.
Why would I convert YAML to JSON?
JSON is required by many APIs and programming languages. Converting YAML to JSON is useful when you need to send configuration data to a JSON-only API, use it in JavaScript code, or validate the structure programmatically.
Why would I convert JSON to YAML?
YAML is more human-readable and commonly used for configuration files like Kubernetes manifests, Docker Compose, and CI/CD pipelines. Converting JSON to YAML makes configuration files easier to read and maintain.
Is my data safe when using this converter?
Yes, all conversion happens entirely in your browser. Your data never leaves your device and is not sent to any server. This tool is completely client-side and privacy-first.
Privacy First
All conversion happens in your browser. Your data never leaves your device.
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