YAML to JSON Converter

Convert YAML to JSON or JSON to YAML instantly. Paste into either panel and get the output immediately.

YAML Input
JSON Output
↕ Also converts JSON → YAML
JSON Input
YAML Output

How to use

  1. Paste your YAML into the left panel — JSON output appears on the right instantly.
  2. Or paste JSON into the right panel to convert back to YAML.
  3. Click Copy to copy the output to your clipboard.

Frequently asked questions

What is the difference between YAML and JSON?

YAML uses indentation and supports comments; JSON uses braces/brackets and has broader API support. Both represent the same data structures.

Can YAML features get lost when converting to JSON?

Yes. Comments, anchors, aliases, and multi-line strings are lost. The data (keys, values, arrays, objects) is preserved.

What does YAML indentation mean for conversion?

Indentation defines nesting. Each indented level becomes a nested object or array in JSON. Inconsistent indentation causes parse errors.

Does this converter work offline?

The js-yaml library is loaded from a CDN once. After that, conversion runs entirely in your browser — no data leaves your device.

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