JavaScript Beautifier PRO - Unminify & Format Code
Operating Instructions
Input
Paste minified or messy JavaScript code into the left pane.
Config
Select indentation size (2 or 4 spaces) and brace style.
Extract
Copy the clean code or download as a .js file.
Formatting Log
function test(){alert('Hello');if(true){return;}}
function test() {
alert('Hello');
if (true) {
return;
}
}
System Capabilities
Readability: Makes complex, compressed code easy to debug and understand.
Secure: Code is processed in your browser. Nothing is sent to a server.
About JavaScript Beautifier PRO
JavaScript Beautifier PRO is a developer utility designed to de-obfuscate and format minified code. In modern web development, files are often "minified" (spaces and breaks removed) to speed up loading times. However, this makes them impossible to read. This tool reverses that process, applying proper indentation, line breaks, and spacing to restore the code's structure for debugging or educational purposes.
Related Technical Articles
Why Minify?
Understanding bandwidth savings vs. code readability.
Clean Code Standards
Why consistent indentation (tabs vs spaces) matters in team projects.