JavaScript Formatter
Free online JavaScript formatter. Format, beautify, and minify JS/TS code instantly. All processing happens locally in your browser.
How to Use JavaScript Formatter
Paste JavaScript
Paste your JavaScript or TypeScript code into the input panel. The tool accepts any JS code — minified, messy, or normally formatted.
Format or Minify
Click "Format" to beautify with proper indentation. Click "Minify" to compress to a single line.
Copy the Result
The output appears in the right panel. All processing happens locally.
Example
Before
function add(a,b){return a+b}const result=add(1,2);console.log(result)After
function add(a, b) {
return a + b;
}
const result = add(1, 2);
console.log(result);Frequently Asked Questions
What does JS formatting do?
JS formatting adds proper indentation, line breaks, and spacing to make your code readable. It uses consistent indentation for blocks, adds spaces around operators, and makes the code structure clear.
When should I minify JavaScript?
Minify JavaScript for production to reduce file size and improve load times. Minification removes whitespace, shortens variable names, and eliminates dead code. For production, use a build tool like webpack or esbuild that handles minification automatically.
Does this tool support TypeScript?
This tool uses basic formatting rules that work with both JavaScript and TypeScript. For advanced TypeScript formatting with type-aware rules, use a dedicated formatter like Prettier or the TypeScript compiler.