TOML ⇄ JSON Converter

Convert between TOML and JSON in either direction, with validation and formatting.

JSON indent

Input

TOML

545 chars · 38 lines

Output

JSONvalid

53 lines

{
  "title": "The Tool Hive",
  "version": "1.4.2",
  "enabled": true,
  "port": 8080,
  "ratio": 0.75,
  "tags": [
    "config",
    "parser",
    "demo"
  ],
  "owner": {
    "name": "Rhys",
    "joined": "2024-01-15"
  },
  "database": {
    "server": "192.168.1.1",
    "ports": [
      8000,
      8001,
      8002
    ],
    "connection_max": 5000,
    "enabled": true
  },
  "servers": {
    "alpha": {
      "ip": "10.0.0.1",
      "role": "frontend"
    },
    "beta": {
      "ip": "10.0.0.2",
      "role": "backend"
    }
  },
  "products": [
    {
      "name": "Hammer",
      "sku": 738594937
    },
    {
      "name": "Nail",
      "sku": 284758393,
      "color": "gray"
    }
  ],
  "settings": {
    "limits": {
      "cpu": 80,
      "memory": 512
    }
  }
}

Handles tables, nested tables, arrays-of-tables, inline tables, arrays, comments, basic/literal strings, ints/floats/bools, hex/oct/bin, inf/nan. Dates convert to strings (JSON has no date type). TOML has no null type, so JSON null values are flagged as an error rather than silently changed. Everything runs locally in your browser.