JSON ↔ YAML Converter
Convert JSON to YAML and vice versa instantly. Free tool with automatic validation, formatting, and support for complex files.
Enter your JSON to convert to YAML
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JSON ↔ YAML Converter: Transform Your Configurations Instantly
Convert instantly between JSON and YAML with our free online tool. Ideal for Kubernetes configuration files, Docker Compose, CI/CD pipelines, and all your structured data manipulation needs. Bidirectional conversion with automatic syntax validation.
JSON (JavaScript Object Notation) and YAML (YAML Ain't Markup Language) are two data serialization formats. JSON is compact and perfect for APIs, while YAML is human-readable and preferred for configuration files. Our converter preserves structure and data types during transformation.
How to Use
- Paste your JSON or YAML code in the input area
- The tool automatically detects the format of your code
- Click the convert button to transform JSON ↔ YAML
- Check for any syntax errors reported
- Copy the converted result with the copy button
💡 Why Convert Between JSON and YAML?
In the modern DevOps ecosystem, you constantly juggle between JSON (APIs, npm/package.json configs) and YAML (Kubernetes, Docker, GitHub Actions, Ansible). Manually converting these formats is error-prone: forgotten commas, wrong indentation, lost data types...
This converter automates the conversion while validating syntax on both sides. No more time wasted debugging cryptic YAML errors or reformatting JSON. Gain productivity and reliability.
🎯 Typical Use Case:
You have an API response in JSON that you need to integrate into your Kubernetes config file (YAML). Instead of manually rewriting the entire structure with proper indentation, you convert JSON to YAML in 2 seconds.
🔧 Practical Use Cases
☸️ Kubernetes Configuration
Convert your Kubernetes YAML manifests to JSON for the API, or transform Helm templates.
apiVersion: v1 ↔ {"apiVersion":"v1"}
🐳 Docker Compose
Transform your docker-compose.yml files to JSON for programmatic manipulation.
services: web: image: nginx
🔄 GitHub Actions / GitLab CI
Convert your CI/CD workflows between YAML (GitHub Actions) and JSON (for the API).
on: push: branches: [main]
📱 OpenAPI / Swagger
API specifications can be written in JSON or YAML. Convert between formats as needed.
openapi: "3.0.0" ↔ {"openapi":"3.0.0"}
✨ Why Use This Converter?
↔️ Bidirectional
Convert JSON → YAML and YAML → JSON with a single click. No separate tools needed.
✅ Automatic Validation
Syntax errors are detected before conversion with clear error messages.
🔒 100% Private
All processing happens locally. Your configs never leave your browser.
📋 Type Preservation
Strings, numbers, booleans, arrays, and nested objects are correctly converted.
⚡ Instant
Real-time conversion as you type. No waiting, no server delays.
📋 One-Click Copy
Copy result to clipboard instantly. Save time in your workflow.
❓ Frequently Asked Questions (FAQ)
What are the main differences between JSON and YAML?
JSON:
- Uses braces {} and brackets []
- Requires double quotes for strings
- More compact, machine-friendly
- Standard for APIs and web
YAML:
- Uses indentation for structure
- No quotes needed for most strings
- More human-readable
- Supports comments
Can YAML comments be converted to JSON?
No. JSON does not support comments. When converting YAML to JSON, comments are lost. This is a limitation of the JSON specification, not this tool.
How are special YAML types handled?
YAML has special types like !!timestamp, !!binary, etc. These are converted to their closest JSON equivalents (usually strings). Complex types may require manual adjustment.
Is the indentation preserved in YAML output?
Yes. The tool uses 2-space indentation by default, which is the standard for most YAML files (Kubernetes, Docker, etc.).