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Common Use Cases
- Converting Kubernetes JSON resources to YAML manifests
- Creating docker-compose.yml from JSON configuration
- Preparing Ansible variables and playbook data
- Migrating JSON config files to YAML for readability
- Learning YAML syntax by seeing how JSON maps to YAML
- Converting CI/CD pipeline definitions to YAML format
All conversion happens entirely in your browser with no data sent to any server. The tool works on any device — desktop, tablet, or mobile.
Examples
Example 1: Real-Time Conversion as You Type
As you type or paste JSON into the input panel, the YAML output updates instantly. This is useful for exploring how JSON structures translate to YAML syntax:
Type this JSON:
{"database": {"host": "localhost", "port": 5432}}Instantly see this YAML:
database:
host: localhost
port: 5432
Add a field:
{"database": {"host": "localhost", "port": 5432, "name": "mydb"}}YAML updates immediately:
database:
host: localhost
port: 5432
name: mydb
Example 2: Docker Compose Configuration
Input JSON:
{
"version": "3.9",
"services": {
"app": {
"build": ".",
"ports": ["3000:3000"],
"environment": {
"NODE_ENV": "production",
"DATABASE_URL": "postgres://db:5432/myapp"
},
"depends_on": ["db", "redis"]
},
"db": {
"image": "postgres:15",
"volumes": ["postgres_data:/var/lib/postgresql/data"],
"environment": { "POSTGRES_DB": "myapp", "POSTGRES_PASSWORD": "secret" }
},
"redis": {
"image": "redis:7-alpine"
}
},
"volumes": { "postgres_data": {} }
}Output YAML (docker-compose.yml ready):
version: '3.9'
services:
app:
build: .
ports:
- 3000:3000
environment:
NODE_ENV: production
DATABASE_URL: postgres://db:5432/myapp
depends_on:
- db
- redis
db:
image: postgres:15
volumes:
- postgres_data:/var/lib/postgresql/data
environment:
POSTGRES_DB: myapp
POSTGRES_PASSWORD: secret
redis:
image: redis:7-alpine
volumes:
postgres_data: {}
Example 3: Ansible Playbook Variables
Input JSON:
{
"web_servers": ["web01.example.com", "web02.example.com"],
"app_config": {
"workers": 4,
"timeout": 30,
"log_level": "info"
},
"deploy": {
"user": "deploy",
"path": "/var/www/app",
"restart_service": true
}
}Output YAML (vars/main.yml):
web_servers:
- web01.example.com
- web02.example.com
app_config:
workers: 4
timeout: 30
log_level: info
deploy:
user: deploy
path: /var/www/app
restart_service: true