YAML to JSON Converter
Convert YAML documents into formatted JSON in your browser.
YAML to JSON Converter
Convert YAML into formatted JSON with the open-source yaml parser. This is useful when config data needs to move into scripts, API tests, or JSON-only tools.
Conversion notes
- YAML mappings become JSON objects
- Sequences become JSON arrays
- Comments are not preserved in JSON output
How to use YAML to JSON Converter
The YAML to JSON converter parses YAML and outputs formatted JSON for scripts, tests, and tools that do not accept YAML directly.
Developers often use this page when they need yaml to json converter, yaml to json, convert yaml to json, and yaml to json online.
Privacy and data handling
This tool is designed to run in your browser for normal use, so your input does not need to be sent to a server.
- Input and output stay on the page while you work.
- Copy buttons use your browser clipboard permission when available.
- Avoid pasting private production data on shared or untrusted devices.
Examples
Convert YAML config to JSON
Input
server:
port: 3000
debug: falseOutput
{
"server": {
"port": 3000,
"debug": false
}
}YAML comments are not preserved because JSON does not support comments.
Steps
- 1Paste a YAML document.
- 2Review parser errors or warnings.
- 3Copy or download the JSON output.
Common use cases
- Convert YAML config into JSON for scripts.
- Inspect Docker Compose or CI snippets as JSON.
- Create JSON fixtures from YAML examples.
Practical tips
- YAML comments are not part of JSON output.
- Indentation errors are the most common YAML problem.
- Validate sensitive config after removing secrets.
FAQ
Will YAML comments appear in JSON?
No. JSON has no comment syntax, so comments are not preserved in the converted output.
Can YAML always become JSON?
Most everyday YAML can be converted, but advanced YAML features may need review after parsing.