📝JavaScript Formatter

Format and beautify minified JavaScript code.

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Basic JS beautifier — adds indentation and newlines. Not a full AST parser.

Minified JS Input

Formatted Output

About JavaScript Formatter

Format and beautify minified or poorly formatted JavaScript code with proper indentation, line breaks, and spacing. Transform compressed production code back into readable, well-structured source code for debugging, editing, and code review purposes.

How to Use JavaScript Formatter

1
Paste your JavaScript
Enter the minified or messy JavaScript code into the input area.
2
Format
Click Format to apply proper indentation and line breaks.
3
Copy the result
Copy the formatted JavaScript for debugging or editing.

Common Use Cases

Making minified JavaScript readable for debugging
Formatting code from browser DevTools Sources panel
Cleaning up auto-generated or transpiled code
Preparing JavaScript for code reviews

Frequently Asked Questions

Does it change the code logic?

No, the formatter only adjusts whitespace, indentation, and line breaks. All JavaScript logic, variable names, and expressions remain unchanged.

Can it format ES6+ syntax?

Yes, the formatter handles modern JavaScript syntax including arrow functions, template literals, destructuring, async/await, and optional chaining.

Will it fix syntax errors?

The formatter works with valid JavaScript. If the input has syntax errors, the formatting may be incomplete or the tool will report an error.

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