🔄 Free JSON to YAML Converter

Convert between JSON and YAML formats instantly with real-time validation, error highlighting, and beautification. Perfect for developers working with config files, APIs, and data structures.

JSON Input
→
YAML Output

🧭 How to Use the JSON YAML Converter

1
Choose Conversion Mode
Select whether you want to convert JSON to YAML, YAML to JSON, or just validate your code. The converter automatically adjusts based on your selection.
2
Paste Your Code
Copy and paste your JSON or YAML code into the input editor. You can also load a sample to see how it works or beautify messy code.
3
Click Convert
Hit the "Convert Now" button and instantly see the converted output. Any syntax errors will be highlighted with helpful error messages.
4
Copy or Download
Use the copy button to quickly copy the converted code to your clipboard, or download it as a file for later use in your projects.

📊 Example Conversions

Here are some common examples of JSON to YAML and YAML to JSON conversions to help you understand the format differences:

JSON to YAML Example

Original JSON:

{ "name": "John Doe", "age": 30, "city": "New York", "skills": ["JavaScript", "Python", "Go"], "active": true }

Converted YAML:

name: John Doe age: 30 city: New York skills: - JavaScript - Python - Go active: true

🚀 Key Features & Benefits

⚡
Instant Conversion
Convert between JSON and YAML formats in milliseconds. No waiting, no server uploads - everything happens instantly in your browser.
✅
Real-time Validation
Automatically validates your code syntax and highlights errors with clear, helpful messages. Know exactly what's wrong and where.
🎨
Code Beautification
Beautify and format messy JSON or YAML code with proper indentation and structure. Makes your code clean and readable.
🔒
100% Private & Secure
All conversions happen locally in your browser. Your data never leaves your device - completely secure and confidential.
📱
Works Everywhere
Use on any device - desktop, tablet, or mobile. Fully responsive design ensures perfect experience on any screen size.
💯
Always Free
No registration, no limits, no hidden costs. Convert unlimited files for free, forever. Perfect for developers and teams.

🛡️ Understanding JSON and YAML

📚 What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's widely used for APIs, configuration files, and data storage.

Key Features: Uses key-value pairs, supports objects and arrays, strict syntax with quotes, commonly used in web APIs and JavaScript applications.

📚 What is YAML?

YAML (YAML Ain't Markup Language) is a human-friendly data serialization format that's often used for configuration files. It's more readable than JSON and supports comments.

Key Features: Uses indentation instead of brackets, supports comments, more human-readable, commonly used in Docker, Kubernetes, and CI/CD pipelines.

💡 Common Use Cases

⚙️ Configuration Files
Convert between formats for application configs, Docker Compose files, Kubernetes manifests, and CI/CD pipeline configurations.
🔌 API Development
Transform API responses from JSON to YAML for documentation, or convert OpenAPI/Swagger specs between formats.
📦 Data Migration
Migrate data between systems that use different formats, or convert data for different applications.

❓ Frequently Asked Questions

What is the difference between JSON and YAML? +
JSON (JavaScript Object Notation) uses brackets and quotes with a strict syntax, making it ideal for APIs and data interchange. YAML (YAML Ain't Markup Language) uses indentation and is more human-readable, commonly used for configuration files. JSON is more compact, while YAML is easier to read and supports comments.
Is my data safe when using this converter? +
Yes, absolutely! All conversions happen entirely in your browser using JavaScript. Your data never leaves your device or gets uploaded to any server. This ensures complete privacy and security for sensitive configuration files or data.
Can I convert large JSON or YAML files? +
Yes! Since the conversion happens in your browser, you can convert files of any size. However, very large files (over 10MB) may take a few seconds to process depending on your device's performance. There are no file size limits or restrictions.
What happens if my JSON or YAML has syntax errors? +
The converter will detect syntax errors and display a clear error message indicating what went wrong. You can use the "Validate Only" mode to check your code for errors without converting. The beautify feature can also help fix formatting issues in valid code.
Can I use this tool for commercial projects? +
Yes! This tool is 100% free for both personal and commercial use. There are no restrictions, no registration required, and no hidden costs. Use it for your projects, team workflows, or client work without any limitations.
Does the converter support nested objects and arrays? +
Yes! The converter fully supports complex nested structures including objects within objects, arrays within arrays, and mixed data types. It maintains the complete structure and hierarchy during conversion between JSON and YAML formats.
How do I download the converted file? +
After converting your code, simply click the "Download" button in the output section. The file will be downloaded with the appropriate extension (.json or .yaml) based on your conversion mode. You can also use the "Copy" button to copy the output to your clipboard.
What browsers are supported? +
This tool works on all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. It's also fully responsive and works perfectly on mobile devices and tablets. For the best experience, we recommend using the latest version of your browser.

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