JavaScript Beautifier (Formatter)
Paste your JavaScript code to format it with basic indentation and spacing. This is a simple beautifier and may not handle all complex cases perfectly.
About JavaScript Beautifier / Formatter
Our JavaScript Beautifier (Formatter) is a free online tool designed to help developers format and prettify their JavaScript code. Whether you're working with minified code, legacy scripts, or just want to improve readability, this tool makes your JavaScript clean and organized with proper indentation and spacing.
Key Features
- Instant Formatting: Transform messy JavaScript code into clean, readable format with a single click
- Customizable Indentation: Choose between 2 spaces, 4 spaces, or tab characters for indentation
- 100% Client-Side: Your code never leaves your browser - complete privacy and security
- Copy-to-Clipboard: Easy one-click copying of your beautified JavaScript
- No Registration Required: Start formatting immediately without any sign-up process
- Free Forever: No limits, no premium features - completely free to use
Why Use a JavaScript Beautifier?
Improved Code Readability: Properly formatted JavaScript is easier to read and understand, making debugging and maintenance much simpler. When code is well-structured with consistent indentation, developers can quickly identify functions, loops, and conditional statements.
Team Collaboration: Standardized code formatting ensures that all team members can easily read and contribute to the codebase. It makes your code easier to read, understand, and maintain for everyone involved.
Debugging Made Easy: Well-formatted code makes it much easier to spot syntax errors, missing brackets, or logical issues. Line-by-line debugging becomes more efficient when code is properly structured.
Code Review Process: During code reviews, formatted JavaScript allows reviewers to focus on logic and functionality rather than trying to decipher poorly structured code.
How to Use This JavaScript Formatter
- Paste Your Code: Copy your unformatted JavaScript code and paste it into the input textarea above
- Choose Indentation: Select your preferred indentation style (2 spaces, 4 spaces, or tabs)
- Click "Beautify JS": Press the beautify button to format your JavaScript code instantly
- Copy Results: Use the copy button to copy your formatted code to the clipboard
- Use in Your Project: Paste the clean, formatted code back into your development environment
Common JavaScript Formatting Issues We Fix
- Missing or inconsistent indentation
- No line breaks after semicolons
- Improperly spaced operators and keywords
- Poorly formatted function declarations
- Inconsistent bracket and parentheses placement
- Cluttered object and array definitions
Best Practices for JavaScript Formatting
Consistent Indentation: Choose either spaces or tabs and stick with it throughout your project. Most modern development teams prefer 2 or 4 spaces for JavaScript.
Meaningful Variable Names: While our beautifier handles formatting, remember to use descriptive variable and function names that clearly indicate their purpose.
Comment Your Code: Well-formatted code should also include helpful comments explaining complex logic or business rules.
Regular Formatting: Make code formatting a regular part of your development workflow rather than a one-time cleanup task.
When to Use This Tool
Perfect For:
- • Formatting minified JavaScript files
- • Cleaning up legacy code
- • Preparing code for documentation
- • Code review preparation
- • Learning from other developers' code
Limitations:
- • Basic formatting only
- • May not handle all edge cases
- • Complex regex patterns might need manual review
- • Modern ES6+ features may need adjustment
💡 Pro Tip: After beautifying your JavaScript, consider using our other developer tools like the JavaScript Minifier for production builds, or the JSON Formatter for working with API responses and configuration files.