JSON-YAML Converter Online - Free JSON to YAML converter and back.
Free online JSON-YAML converter. Convert JSON to YAML and back with syntax validation. All processing in your browser.
How to Use JSON-YAML Converter
- 1Choose conversion direction (JSON→YAML or YAML→JSON).
- 2Paste your JSON or YAML content.
- 3Click "Convert" and copy the result.
Frequently Asked Questions
What is the difference between JSON and YAML?
JSON uses braces and brackets for structure, while YAML uses indentation. YAML supports comments and is more readable, but JSON is more widely supported by APIs and parsers.
Is my data sent to a server?
No. All conversion happens locally in your browser. Your data never leaves your device.
Does this support advanced YAML features?
This tool supports the JSON-compatible subset of YAML (strings, numbers, booleans, null, arrays, objects). Advanced features like anchors, aliases, and multi-document streams are not supported.
Found a bug or have a suggestion? Report it on GitHub