Code Beautifier

How to Beautify Code Online

Supported Languages

Why Beautify Code?

Code Beautification vs Formatting vs Linting — What's the Difference?

These three terms are often used interchangeably, but they mean different things:

In practice: run a beautifier when you receive messy or minified code. Use a formatter like Prettier in your editor on save. Run a linter in CI to catch real bugs before they reach production.

Before & After: Code Beautification Examples

function add(a,b){return a+b;}const result=add(1,2);console.log(result);

function add(a, b) {
  return a + b;
}

const result = add(1, 2);
console.log(result);

.btn{display:inline-block;padding:8px 16px;background:#ef4444;color:#fff;border-radius:4px;font-size:14px;}

.btn {
  display: inline-block;
  padding: 8px 16px;
  background: #ef4444;
  color: #fff;
  border-radius: 4px;
  font-size: 14px;
}

{"name":"John","age":30,"address":{"city":"New York","zip":"10001"},"hobbies":["reading","coding"]}

{
  "name": "John",
  "age": 30,
  "address": {
    "city": "New York",
    "zip": "10001"
  },
  "hobbies": [
    "reading",
    "coding"
  ]
}

Online Code Beautifier vs Local Formatter — When to Use Which

Use this online code beautifier for quick, one-off formatting tasks. For ongoing projects, set up Prettier or your IDE's built-in formatter so code is automatically beautified on every save — and use this tool when you're away from your usual environment or dealing with an unfamiliar snippet.