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How to Use
- 1Select the 'YAML to JSON' or 'JSON to YAML' tab for your conversion direction.
- 2Paste your YAML or JSON content in the input area.
- 3Click Convert to parse and format the output.
- 4Review any error messages if the input has syntax issues.
- 5Copy the result or download as a .json or .yaml file.
About YAML ↔ JSON Converter
The YAML ↔ JSON Converter handles bidirectional conversion between YAML and JSON with standards-compliant parsing using the js-yaml library. Paste YAML to get formatted JSON, or paste JSON to get clean YAML — both directions in one tool.
Parse errors are displayed with clear messages and line numbers to help you debug malformed input. The tool supports complex nested structures, arrays, multi-line strings, anchors, aliases, and all standard YAML 1.2 scalar types.
DevOps engineers use it to convert Kubernetes manifests and CI/CD configs between formats. Backend developers use it to transform API payloads and configuration files. No need to write conversion scripts — paste and convert in seconds.
Frequently Asked Questions
What YAML features are supported?
Full YAML 1.2 support including nested objects, arrays, multi-line strings (literal and folded), anchors, aliases, and all scalar types (strings, numbers, booleans, null, dates).
Can I download the converted output?
Yes. Both JSON and YAML outputs can be downloaded as files (.json or .yaml) using the Download button.
Is JSON valid YAML?
Yes. YAML is a superset of JSON, so any valid JSON document is also valid YAML. You can paste JSON into the YAML input and it will parse successfully.
Does it show error line numbers?
Yes. When parsing fails, the error message includes the line number and position of the syntax error so you can locate and fix the issue quickly.
Can I convert Kubernetes YAML to JSON?
Yes. Paste any Kubernetes manifest, Helm chart values, or Docker Compose file and convert it to JSON for use with APIs, validation tools, or programmatic processing.