JS Formatter
Beautify minified or messy JavaScript with proper indentation and spacing
Frequently Asked Questions
How does the JavaScript formatter work? +
The formatter tokenizes your JavaScript and applies consistent formatting rules: proper indentation after braces, line breaks after semicolons and braces, spacing around operators, and your preferred quote style. It handles strings, comments, regex, and template literals without breaking them.
Is my code sent to a server? +
No. All formatting happens 100% in your browser using JavaScript. Your code never leaves your device — nothing is uploaded, logged, or transmitted anywhere.
Will this formatter change what my code does? +
No. The formatter only changes whitespace, indentation, and optionally quote style. It does not modify your code logic, variable names, or structure. The formatted code is functionally identical to the original.
Can I format TypeScript with this tool? +
This tool is designed for standard JavaScript. TypeScript-specific syntax like type annotations and interfaces may not be formatted perfectly. For TypeScript, consider a dedicated TypeScript formatter.
What are the quote style options? +
You can choose to keep quotes as-is (no change), convert all string quotes to single quotes, or convert all to double quotes. This only affects regular string literals — template literals (backtick strings) are never changed.