JSON to YAML Converter
Convert JSON to YAML with configurable indentation and optional key sorting for stable config output. Perfect for frontmatter, infrastructure files, app settings, and developer documentation.
Complete Guide: JSON to YAML Converter
Everything you need to know about using this tool effectively
The JSON to YAML Converter transforms JSON text into YAML format. It parses the JSON, then serializes it as YAML with proper indentation, block scalars, and data type representation. The output is valid YAML that can be used in configuration files, Docker Compose, Kubernetes manifests, and CI/CD pipelines. All processing happens in the browser.
This tool uses a JSON parser to validate the input, then converts the resulting JavaScript object to YAML by recursively processing each value type. Objects become YAML mappings, arrays become YAML sequences, strings are quoted when necessary, and numbers and booleans are represented as bare values.
Converting API responses to YAML config
Transform a JSON API response into YAML for use in a configuration file.
Creating Docker Compose files
Convert JSON service definitions to YAML format for Docker Compose.
Migrating JSON configs to YAML
Convert existing JSON configuration files to the more readable YAML format.
Preparing Kubernetes manifests
Convert JSON resource definitions to YAML for use with kubectl.
Paste JSON
Enter JSON text in the input area.
Convert
Click Convert. The tool parses the JSON and outputs YAML.
Copy or download
Copy the YAML to clipboard or download it as a .yml file.
YAML is more readable than JSON for configuration files.
The tool quotes strings that contain special YAML characters.
Numbers and booleans are represented as bare values in YAML.
Download as .yml for direct use in Docker, Kubernetes, or CI/CD tools.
Is the output valid YAML?
Yes. The tool produces valid YAML that conforms to the YAML 1.1 specification. It handles proper indentation, string quoting, and data type representation.
How are JSON null values represented?
JSON null values are represented as empty values in YAML, which is the standard YAML representation for null.
Is my JSON uploaded to a server?
No. All conversion happens in your browser using JavaScript. The data never leaves your device.
Can I convert large JSON files?
Yes. The tool handles JSON of any size that fits in browser memory.
Does it handle nested structures?
Yes. The converter recursively processes nested objects and arrays with proper YAML indentation at each level.