YAML ↔ JSON Converter
Convert between YAML and JSON formats. Supports nested objects, arrays, and common YAML types.
config.json
Direction
input.yaml
output.json
Frequently asked questions
Select the conversion direction (YAML→JSON or JSON→YAML). Paste your data in the left panel. The converted output appears instantly in the right panel. Download or copy the result.
No. All conversion happens 100% client-side in your browser. Your data never leaves your machine.
Supports nested objects, arrays, strings, numbers, booleans, null, anchors/aliases, and multi-line strings. Comments are preserved in YAML output.
Yes, the tool handles large YAML/JSON structures. For very large files, the conversion is still instant as it runs locally in your browser.
Ready to build?
Create your first mock JSON endpoint or try more tools — signup takes seconds.