JavaScript Formatter
Basic formatter - best suited for minified single-line JavaScript.
Privacy First: Your files are processed securely. Whenever possible, processing happens in your browser and files are never stored on our servers.
Beautify and standardize JavaScript code to make it readable, consistent, and maintainable. Paste any JavaScript - a single function, a full module, minified library code, or obfuscated output - and the formatter adds proper indentation and line breaks, places braces consistently, spaces operators and keywords correctly, and handles ES6+ syntax including arrow functions, template literals, async/await, and destructuring. Configure indentation size (2 spaces, 4 spaces, or tabs), semicolon enforcement, quote style (single or double), and maximum line length before wrapping. The output follows Prettier and ESLint recommended conventions. All formatting runs in your browser - your code never leaves your device. No account needed.
How to Use
- 1Paste your JavaScript code into the input editor
- 2Click Format to apply Prettier-standard formatting and indentation
- 3Or click Minify to compress the code for production deployment
- 4Choose between JavaScript, TypeScript, or JSX mode using the toggle
- 5Review the formatted output in the right panel
- 6Click Copy to copy the formatted code to your clipboard
Features
- Prettier-powered formatting (runs via WebAssembly in the browser)
- Minify mode for production builds
- JavaScript, TypeScript, and JSX mode toggle
- Supports ES5 through ES2020+ syntax
- Copy to clipboard
- 100% browser-based - code never uploaded
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