Text & Data · Convert

YAML ⇄ JSON

Convert between YAML and JSON in either direction, with validation and pretty output.

Source

Converted

{
  "name": "devbelt",
  "version": "1.4.0",
  "tags": [
    "dev",
    "tools"
  ]
}

Frequently asked

Does it support multi-document YAML?

It converts the first document. Anchors and standard YAML types are supported via a battle-tested parser.

Is my data uploaded anywhere?

No. This tool runs entirely as JavaScript in your browser — your input never leaves your device and nothing is logged.

Choose YAML → JSON or JSON → YAML.

Paste your source document.

Copy the converted result.