JavaScript Formatter

The JavaScript Formatter is an online tool that takes messy, minified, or poorly indented JavaScript code and transforms it into clean, consistently formatted output. It applies proper indentation, line breaks, and spacing conventions so your code becomes easy to read, review, and maintain — without any manual effort.

For developers, readable code is not a luxury — it's a necessity. Whether you're debugging a production issue, reviewing a colleague's pull request, or exploring a third-party library, well-formatted JavaScript dramatically reduces cognitive load. This tool handles the tedious formatting work instantly, so you can focus on what the code actually does.

Using the formatter is straightforward: paste your raw or minified JavaScript into the input area and the tool immediately outputs a beautified version with consistent indentation, properly spaced operators, and organized block structure. There's no configuration required to get started — the default settings follow widely accepted JavaScript style conventions.

The input can range from a single function to thousands of lines of minified production code. The formatter handles arrow functions, template literals, nested callbacks, class definitions, and modern ES6+ syntax without issue. It reconstructs logical structure even when the original code has no whitespace at all — a common scenario when working with bundled or minified files.

One edge case to be aware of: the formatter preserves your code's logic exactly as written — it does not lint, fix bugs, or restructure your code beyond visual formatting. If your JavaScript has syntax errors, the output may not format correctly or may highlight the problem area. Always validate your code if you encounter unexpected results.