JavaScript Formatter

The JavaScript Formatter transforms compressed or inconsistently formatted JavaScript into a more readable code structure. Improve indentation and organize your code to make functions, expressions, and blocks easier to inspect during debugging, development, and code reviews. This free online JavaScript beautifier works as a convenient formatting tool without requiring a separate application. Paste your JavaScript code to generate a cleaner, easier-to-read version.

New to JavaScript Formatter?

Format a compact JavaScript function. Load the example to see the tool in action.

🔒 Privacy-minded processing: browser-based tools are designed to process supported inputs locally. Network-backed tools such as DNS lookup send only the requested lookup to the service.

GUIDE

What is JavaScript Formatter?

A JavaScript Formatter converts compressed or inconsistently formatted JavaScript into a cleaner structure with improved indentation and readability. Organize functions, expressions, and code blocks to make scripts easier to inspect, debug, review, and maintain. This free online JavaScript beautifier lets you format code directly in your browser without installing a separate application.

WHY IT HELPS

Why use this tool?

Clean up code so it is easier to read and review.
Compare the formatted result with the original before committing it.
Handle a quick formatting task without opening an editor.

HOW TO USE

How to use JavaScript Formatter

Step 1. Paste your code into the input area.
Step 2. Run the formatter or tool and review the output.
Step 3. Copy the result and run your project's own checks before using it.

PRACTICAL USES

Common use cases

Reading minified or messy code

Preparing snippets for documentation

Reducing file size for delivery

Checking pattern or syntax behavior

EXAMPLE IN PRACTICE

Format JavaScript for easier debugging

Line breaks and indentation make control flow easier to follow without changing program behavior.

function getLabel(tool) {
  if (!tool) return "Unknown tool";
  return `${tool.name} (${tool.category})`;
}

GOOD TO KNOW

Important notes

Formatting changes layout rather than behavior, but test important code after changing it.
Language versions and style rules differ, so match your project's own settings.

RELATED TOOLS

More Code & Formatting Tools

FAQ

JavaScript Formatter FAQ

What is JavaScript Formatter?

Format and beautify JavaScript online with consistent indentation and readable code structure. Simplify debugging, code reviews, and maintenance.

Do I need an account to use JavaScript Formatter?

No. You can use it without creating an account.