JSON ↔ YAML Converter

JSON vs YAML — when to use which

JSON (JavaScript Object Notation) is the standard for APIs, package.json, and data exchange. It's strict — requires quotes around keys and doesn't support comments.

YAML (YAML Ain't Markup Language) is human-friendly. Used in Docker Compose, Kubernetes manifests, GitHub Actions, Ansible playbooks, and config files. Supports comments, multi-line strings, and anchors.

Common conversions

• docker-compose.yml — YAML config, sometimes generated from JSON templates
• GitHub Actions — workflow YAML files, often based on JSON schemas
• Kubernetes — accepts both JSON and YAML, but YAML is the convention
• API responses — JSON data you want to turn into readable YAML config
• package.json — JSON that some tools let you express in YAML

How this converter works

Everything runs in your browser. Your data never leaves your machine. The converter parses your input, validates the syntax, and outputs the converted format instantly.