YAML ↔ JSON Converter
Free online YAML to JSON converter. Convert between YAML and JSON formats with support for nested structures and comments. Bidirectional conversion, no signup, local browser processing.
How to Use YAML ↔ JSON Converter
- 1Paste YAML or JSON data into the input area
- 2Select the conversion direction (YAML to JSON or JSON to YAML)
- 3Click Convert to process the data
- 4Review the formatted output
- 5Copy or download the converted result
Frequently Asked Questions
Are YAML comments preserved during conversion?
Yes, YAML comments are maintained when converting from YAML to JSON - they are added as special comment keys in the JSON output for reference. When converting JSON to YAML, comments are not generated since JSON does not natively support comments.
Does it support deeply nested and complex structures?
Absolutely. Unlimited nesting depth is supported. Complex nested objects, arrays of objects, multi-level hierarchies, and custom data structures all convert accurately between YAML and JSON formats without any loss of structure or data.
Can I convert YAML files with multiple documents?
Yes, multi-document YAML files (using --- separators) are supported. Each document is converted to a separate JSON object, making it easy to work with YAML streams and configuration files that contain multiple documents.
Is YAML ↔ JSON free, and do I need to sign up or upload my files?
YAML ↔ JSON is 100% free to use with no signup, no registration, and no usage limits. All processing happens locally in your browser - your files and data never leave your device, so no upload is required and your privacy is fully protected.