YAML to JSON Converter
FeedbackConvert YAML to JSON format with validation and formatting
YAML Input
📄 JSON Output
Usage Instructions
- Paste or type YAML data in the left input box
- Select output format (Formatted or Minified)
- If Formatted is selected, you can set indent size (2 or 4 spaces)
- Optionally sort object keys alphabetically
- Converted JSON format will automatically display on the right
- If YAML has syntax errors, detailed error messages will be displayed
- Click "Copy" or "Download" to save the result
📝 YAML Syntax Key Points:
- Use indentation to represent hierarchy (typically 2 spaces)
- Key-value pairs separated by colon: key: value
- List items with dash: - item
- Supports comments: # this is a comment
- Strings usually do not need quotes
- Multi-line strings can use | or >
Use Cases:
- Convert Kubernetes, Docker Compose configuration to JSON
- Process CI/CD configuration files (GitHub Actions, GitLab CI, etc.)
- Import configuration files to systems that only support JSON
- Data format conversion and migration
- Debug and validate YAML configuration
Common YAML Errors:
- Inconsistent indentation (must use spaces, not tabs)
- Missing space after colon
- Missing space after dash in list items
- Special characters not properly quoted
- Boolean value spelling error (should be true/false, not True/False)
About YAML to JSON Converter
Convert YAML configuration files to JSON format with syntax validation and flexible formatting options. Choose between formatted or minified output, customize indentation (2/4 spaces), and optionally sort object keys. Includes detailed error messages for invalid YAML syntax with line number indicators. Perfect for converting config files, processing CI/CD configs, or integrating with JSON-only APIs. Supports comments and all YAML features.
Frequently Asked Questions
Why convert YAML to JSON?
JSON is easier for many APIs, scripts, and validation tools to consume, while YAML is often used for human-written configuration.
What YAML features can affect JSON output?
Comments are removed because JSON has no comments. Anchors, aliases, and special YAML values are resolved according to the parser where possible.
Can this help debug YAML syntax?
Yes. If YAML parsing fails, the error message can help locate indentation issues, invalid mappings, or malformed lists.
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