How to Convert JSON to YAML
Paste your JSON into the input field above.
The YAML output is generated automatically as you type.
Adjust the indent size using the dropdown if needed.
Click "Copy YAML" to copy the result to your clipboard.
Key Features
Instant Conversion
JSON is converted to YAML live as you type — no button click required.
Configurable Indentation
Choose between 2 spaces and 4 spaces for your YAML output.
Privacy-First
All conversion happens entirely in your browser. Your JSON data is never uploaded or shared with any server.
Clear Error Feedback
Invalid JSON is flagged with a clear error message so you can identify and fix the issue quickly.
Privacy & Security
This tool runs entirely in your browser using JavaScript. Your JSON data is never sent to any server, stored, or shared. It is safe to use with sensitive configuration files, API responses, or any private data.
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format widely used for configuration files. It is a superset of JSON and is popular in tools like Docker, Kubernetes, and GitHub Actions.
Does this support all JSON types?
Yes. The converter handles all valid JSON types: objects, arrays, strings, numbers, booleans, and null values.
What happens if my JSON is invalid?
An error message is displayed describing the parsing issue. No output is generated until the JSON is valid.
Is the output valid YAML?
Yes. The converter produces valid YAML 1.2 block-style output for all valid JSON inputs, including proper quoting of strings that could be ambiguous in YAML.
Can I convert a JSON array at the root level?
Yes. Root-level JSON arrays are converted to YAML block sequences, and arrays of objects are rendered with the standard YAML list-of-mappings format.