JavaScript Formatter

Format and beautify JavaScript code instantly. Free online JS formatter with cus...

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Formatted JavaScript will appear here...
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Formatter Features

JavaScript Formatting - Beautify any JavaScript code with proper indentation and line breaks
Custom Indentation - Choose between 2-space and 4-space indentation styles
Instant Processing - Format code instantly with no server round-trips
Client-Side Only - All processing in your browser - code never leaves your device
One-Click Copy - Copy formatted output to clipboard with a single click
Mobile Friendly - Works on all devices including phones and tablets

Why Use JavaScript Formatter?

Instant Formatting

Format JavaScript code instantly with a single click. No waiting, no server processing - everything happens locally in your browser.

100% Private

Your code never leaves your device. Complete privacy and security guaranteed - safe for proprietary and sensitive code.

ES6+ Support

Full support for modern JavaScript syntax including arrow functions, template literals, destructuring, classes, and async/await.

Completely Free

No hidden fees, no subscriptions, no usage limits. Format unlimited JavaScript code for free, forever.

Common Use Cases

Debugging Minified Code

Format minified third-party scripts to understand and debug issues in production code.

Code Reviews

Ensure consistent formatting before submitting code for review by teammates.

Learning & Teaching

Make code examples readable for students or when learning from open-source projects.

Version Control

Format code before committing to keep diffs clean and readable in Git history.

How It Works

1

Paste Your JavaScript Code

Copy your minified, compressed, or poorly formatted JavaScript code and paste it into the input area. The tool accepts all valid JavaScript syntax including ES6+ features.

2

Choose Indentation Settings

Select your preferred indentation style - 2 spaces or 4 spaces. This ensures the formatted code matches your project's coding standards.

3

Format and Copy

Click the Format Code button to beautify your JavaScript. Review the formatted output in the right panel and click Copy to save it to your clipboard.

Formatting Tips

Consistent Indentation

Use consistent indentation across your project to maintain readability and make code reviews easier.

Format Before Committing

Format your code before committing to version control to keep diffs clean and readable.

Combine with Linting

Combine formatting with linting tools like ESLint for comprehensive code quality.

Frequently Asked Questions

JavaScript Formatter is a free online tool that beautifies and formats your JavaScript code for better readability. It processes your code entirely in your browser using client-side JavaScript, meaning your code never leaves your device. Simply paste your minified or poorly formatted JS code, select your preferred indentation (2 spaces or 4 spaces), and click the Format button.
Yes, JavaScript Formatter is completely free to use with no hidden charges, no signup required, and no usage limits. All features are available without any premium tiers or subscriptions.
Absolutely! Our JavaScript Formatter is specifically designed to handle minified code. Whether your JavaScript is compressed, minified, or just poorly formatted, our tool can restore it to a readable format. This is especially useful when you need to debug third-party scripts.
Yes, the JavaScript Formatter fully supports modern JavaScript (ES6, ES2015+) syntax including arrow functions, template literals, destructuring, classes, async/await, and more.
Yes! You can choose between different indentation options: 2 spaces or 4 spaces. This flexibility ensures the formatted code matches your project's coding standards or personal preferences.
Yes, absolutely. All formatting happens directly in your web browser using client-side JavaScript. Your code is never uploaded to our servers or any third-party services.
Formatted JavaScript code is easier to read, debug, and maintain. It improves collaboration by making code consistent across team members, reduces errors from misreading code, and makes it easier to spot syntax errors and logical issues.
Yes, the JavaScript Formatter works with any JavaScript code including Node.js applications, frontend code, React components, Vue files, and more.
Yes, JavaScript Formatter works on all devices including smartphones and tablets. The tool is fully responsive and adapts to any screen size.

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