JavaScript Formatter beautifies minified or uneven JavaScript with consistent indentation, spacing, line breaks, and brace placement. It supports modern syntax including classes, private fields, async functions, optional chaining, nullish coalescing, template literals, modules, and React JSX.
Choose tabs or spaces, set a preferred line width, control brace style, preserve useful newlines, keep existing array indentation, or split long method chains. Press Ctrl+Enter or Command+Enter to format directly from the editor.
Minify removes comments and unnecessary code while retaining readable identifiers. Minify & Mangle also shortens eligible local names for a smaller result. Minification expects executable JavaScript, so JSX should be compiled before it is minified. All processing runs locally in your browser.