JSON ↔ YAML Converter
Convert JSON to YAML or YAML to JSON for APIs, configuration files, and data transformation.
Conversion Options
Features
Bidirectional Conversion
Convert JSON to YAML or YAML to JSON with a single click. Switch between modes and process data in either direction.
Flexible Formatting
Configure indentation (2 or 4 spaces), pretty formatting, whitespace trimming, and alphabetical key sorting for your output.
Nested Structure Support
Handle deeply nested objects and arrays. Complex data structures are preserved during conversion between formats.
Validation & Errors
Real-time input validation with clear error messages. Invalid JSON or malformed YAML is detected before conversion.
1MB Data Support
Process large files up to 1MB efficiently. Optimized parsing algorithms handle complex documents without lag.
100% Client-Side
All conversion happens in your browser. Your data never leaves your device—complete privacy for sensitive configurations.
How to Convert JSON to YAML
- Select JSON → YAML mode using the toggle buttons at the top of the tool.
- Paste your JSON data into the input textarea. The tool validates your JSON in real-time.
- Configure formatting options such as indentation and whether to sort keys alphabetically.
- Click Convert or press Ctrl+Enter to generate your YAML output.
- Copy or download the result using the toolbar buttons.
How to Convert YAML to JSON
- Select YAML → JSON mode using the toggle buttons at the top of the tool.
- Paste your YAML data into the input textarea. The tool validates YAML syntax automatically.
- Configure JSON options such as pretty formatting and indentation level.
- Click Convert or press Ctrl+Enter to generate your JSON output.
- Copy or download the result using the toolbar buttons.
JSON vs YAML Explained
JSON (JavaScript Object Notation)
JSON is a lightweight data interchange format that uses curly braces for objects and square brackets for arrays. It's the standard format for REST APIs, web services, and configuration in JavaScript projects.
- Strict syntax with braces and brackets
- Requires quotes around keys and string values
- Native support in JavaScript and most languages
- Ideal for APIs and web applications
YAML (YAML Ain't Markup Language)
YAML is a human-readable configuration format that uses indentation for structure. It's popular for DevOps tools, configuration files, and documentation where readability is important.
- Clean, indentation-based syntax
- Supports comments with #
- More human-readable for complex configs
- Ideal for DevOps and configuration files
Common Use Cases
API Debugging
Convert JSON API responses to YAML for easier reading and documentation. YAML's clean syntax makes complex nested API data more approachable for analysis.
DevOps Configuration
Convert YAML configurations (Kubernetes, Docker Compose, Ansible) to JSON for tools that require JSON input, or convert JSON configs to more readable YAML.
Data Transformation
Transform data between formats for different tools and platforms. Bridge the gap between JavaScript applications and configuration management systems.
Documentation
Present API examples and configuration samples in both JSON and YAML formats. Give developers the format they prefer for their workflow.
Frequently Asked Questions
What is JSON to YAML conversion?
JSON to YAML conversion transforms structured JSON data into YAML format. JSON uses braces and brackets while YAML uses indentation, making YAML more human-readable for configuration files and documentation.
How do I convert YAML to JSON?
Simply paste your YAML data into the input field, select YAML → JSON mode, and click Convert. The tool parses YAML indentation and structure, producing properly formatted JSON output.
What is the difference between JSON and YAML?
JSON uses explicit syntax with curly braces {} for objects and square brackets [] for arrays. YAML uses indentation-based structure and supports comments, making it more human-readable for configuration files.
Is the conversion done in the browser?
Yes, all conversion happens entirely in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy for sensitive configuration files.