YAML Validator & Formatter

Paste YAML to validate syntax and see errors by line. Format with 2 or 4-space indentation, or convert to JSON. Supports mappings, sequences, nested structures, and scalar types. Runs in your browser.

Indent:

3 free uses remaining todayPro: unlimited + JSON→YAML →

✓Valid YAML · 19 lines

YAML Input

19 lines · 225 chars

Parsed Structure

{
  "name": "my-project",
  "version": "1.0.0",
  "environment": "production",
  "database": {
    "host": "localhost",
    "port": 5432,
    "name": "mydb"
  },
  "features": [
    "authentication",
    "logging",
    "caching"
  ],
  "settings": {
    "debug": false,
    "timeout": 30,
    "api_key": "abc123"
  }
}

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