YAML to JSON Converter
Convert YAML to JSON format instantly with validation
YAML Input
JSON Output
What is YAML to JSON Converter?
Need to convert your YAML (YAML Ain't Markup Language) to JSON (JavaScript Object Notation)? This tool does that instantly. JSON is the standard for modern APIs, while YAML is great for configuration files. Convert between them whenever you need.
According to MDN Web Docs, both YAML and JSON are popular data formats. YAML is often used in config files (like Docker Compose, Kubernetes, or CI/CD pipelines), while JSON is standard for APIs and web applications. Our converter handles the conversion perfectly, preserving all your data structure.
Everything happens in your browser – your data stays private. Convert, download, and use your JSON file right away.
What Makes This Tool Different
Automatic Conversion
Paste YAML and get JSON instantly. We handle all the syntax differences – indentation becomes brackets, colons become quotes, everything gets converted correctly.
Structure Preservation
Your data structure stays intact. Nested objects, arrays, and all values are preserved exactly as they were in YAML.
Validation Built-In
We validate your YAML first, so you know the conversion will work. Invalid YAML gets caught before conversion starts.
File Upload Support
Got a big file? Just upload it. Works great for converting those massive YAML configs or data files without copy-pasting.
Download JSON
One click to download your JSON file. Drop it into your project, use it in REST APIs, or any JSON-based system.
Minify Option
Need compact JSON for production? One click minifies everything, removing all whitespace while keeping it valid. Perfect for API requests.
How It Works
Paste or Upload YAML
Paste your YAML into the left editor, or click "Upload" to load a file. The YAML should be valid – keys, values, nested structures all work. You can also click "Sample" to see an example.
Automatic Conversion
As soon as you paste, the converter processes your YAML and displays the JSON output on the right. All your data structure is preserved, just in JSON format now.
Download or Copy
Click "Download" to save the JSON file, or "Copy" to copy it to your clipboard. Need minified JSON? Click "Minify" to compress it. The JSON is ready to use in your applications or APIs.
When You'd Actually Use This
Config to API
Convert YAML configs to JSON for use in REST APIs. Great for generating API responses from configuration files or moving configs to JSON-based systems.
Format Preference
Some systems require JSON format. Convert your YAML data to JSON when working with tools or systems that only accept JSON.
API Development
Convert YAML data to JSON for API responses. JSON is standard for REST APIs, making it easier to work with in JavaScript applications.
Data Migration
Migrate YAML data to JSON-based systems. Convert data formats when moving between systems or integrating with applications that prefer JSON.
Common Questions
Is my YAML data stored?
Nope. Everything happens right in your browser. Your YAML never leaves your computer – we don't even see it.
What YAML formats work?
The converter works with any valid YAML structure – keys, values, nested objects, arrays, and mixed types. It analyzes the structure and converts it to equivalent JSON.
How are nested structures handled?
Nested YAML structures become properly nested JSON objects. Arrays stay as arrays, and all data types (strings, numbers, booleans, null) are preserved correctly.
Can I convert JSON back to YAML?
Yep. Use our JSON to YAML converter to convert JSON files back to YAML format.
What if my YAML has special characters?
Special characters are properly escaped in JSON. Strings with quotes, backslashes, or other JSON syntax characters are handled correctly.
Does it work with large datasets?
Yep. Since everything happens in your browser, it depends on your device. Small to medium YAML structures convert instantly. Really huge structures might take a few seconds.
Other YAML Tools You Might Need
Conversion is just one YAML task. Here are other tools that work well together:
Need to learn more about YAML? Check out the official YAML.org website or the comprehensive YAML specification. For JSON, check out JSON.org.