JSON / YAML
Convert between JSON and YAML. Auto-detects input format.
About this tool
The JSON / YAML converter lets you transform configurations and data between the two formats widely used in modern software development. Paste JSON or YAML into the input and the tool automatically detects the format, converting to the other with a single click.
To use it, simply paste the content into the input area — it can be a JSON object like '{"key": "value"}' or an indented YAML block. Click "JSON → YAML" or "YAML → JSON" as needed. The formatted result appears immediately, ready to copy.
Common use cases include converting configuration files between formats (many DevOps tools accept both), adapting Docker Compose or Kubernetes configurations (YAML) for APIs that expect JSON, converting API responses into human-readable configurations, and checking whether a malformed YAML is valid by attempting to convert it to JSON. Infrastructure teams use it frequently when working with CI/CD pipelines, Helm charts, and cloud service configurations.
Processing happens entirely in your browser. No configuration data — which often contains API keys, passwords, and sensitive information — is sent to any server. No account is required.
Frequently asked questions
Is YAML with anchors and references supported?
The tool supports standard YAML. Anchors ('&anchor') and aliases ('*anchor') are resolved during conversion to JSON, but the output does not preserve the anchor structure.
Is the generated JSON formatted or minified?
The resulting JSON is formatted with 2-space indentation for readability.
Is this tool free?
Yes, completely free and no signup required.
Is my data sent to any server?
No. Conversion is done locally in your browser. Configuration files with credentials or tokens never leave your device.
Does it work on mobile?
Yes. The interface is responsive and works well on smartphones for quick lookups.