JavaScript Formatter
Format and beautify JavaScript code
Frequently Asked Questions
How does the JavaScript Formatter work?
Paste minified or unformatted JavaScript and the tool adds proper indentation, line breaks, and spacing. It handles ES6+ syntax including arrow functions, template literals, destructuring, and async/await.
Can I minify JavaScript with this tool?
Yes. Switch to minify mode to remove whitespace, comments, and shorten variable names (optional). Minification typically reduces JS file size by 40-60%. The minified output is functionally identical to the original.
What formatting style options are available?
Choose indentation (2 spaces, 4 spaces, tabs), semicolons (always or ASI), quotes (single or double), trailing commas, and brace style. Presets for popular styles like Airbnb, Standard, and Prettier are included.
Does the formatter work with TypeScript?
Yes. The formatter handles TypeScript syntax including type annotations, interfaces, generics, enums, and decorators. It preserves type information while formatting the code structure.
Is my code sent to a server for formatting?
No. All formatting happens locally in your browser. Your JavaScript code never leaves your device. This is essential for proprietary code, API keys, or any sensitive logic.