Digital Toolbox

JSON Formatter & Validator

Paste JSON to format, validate, and repair it instantly — free, no sign-up, processed entirely in your browser. Convert to CSV, YAML, or TypeScript too.

  • 100% free
  • No sign-up
  • Runs on your device
Upload a .json file
{
  "id": "usr_8f21a3",
  "name": "Alex Rivera",
  "email": "alex.rivera@example.com",
  "active": true,
  "avatarUrl": "https://images.example.com/avatars/alex-rivera.png",
  "profile": {
    "plan": "pro",
    "referredBy": null,
    "address": {
      "city": "Austin",
      "country": "US"
    }
  },
  "tags": [
    "beta-tester",
    "design-partner"
  ],
  "orders": [
    {
      "id": 1001,
      "item": "Wireless Mouse",
      "quantity": 2,
      "price": 24.99
    },
    {
      "id": 1002,
      "item": "Mechanical Keyboard",
      "quantity": 1,
      "price": 89.5
    },
    {
      "id": 1003,
      "item": "USB-C Hub",
      "quantity": 3,
      "price": 19
    }
  ]
}

Convert to another format

JSON → CSV needs an array of objects at the root, like [{"a":1},{"a":2}].

Compare two JSON documents

Paste a second JSON document to see every addition, removal, and changed value between the two.

Enter valid JSON in both documents to see the differences.

Validate against a JSON Schema

Paste a JSON Schema to check your document against it, with the exact path and reason for every violation.

Checked against the document above, entirely in your browser.

Escape or unescape a JSON string

Escape any text into a JSON string literal, or decode one back to plain text.

Every JSON document you paste, upload, or convert is processed entirely in your browser — this tool doesn't even have a server to send it to.

Frequently asked questions