ZeroServer.tools

JavaScript Beautifier

Beautify and format minified or messy JavaScript with configurable indentation.

Indent

Input

Output

function greet(name) {
  if(name) {
    return "Hello, "+name+"!";
  }else {
    return "Hello, World!";
  }
}const add=(a,b)=> {
  return a+b;
};

What does a JavaScript beautifier do?

A JavaScript beautifier (or formatter) re-indents minified or poorly-formatted code to make it human-readable. This tool uses brace-depth tracking to reconstruct proper indentation — useful for reading compressed third-party scripts or obfuscated code. For production formatting, consider a full AST-based tool like Prettier.

Private & free — this tool runs entirely in your browser.