JavaScript Formatter
Format, beautify, and minify JavaScript code
Processed on your device — never uploaded
JavaScript Input
Formatted Output
Frequently Asked Questions
What is the difference between formatting and minifying JavaScript?
Formatting (beautifying) adds proper indentation and line breaks to make code readable, while minifying removes all unnecessary whitespace and comments to reduce file size for production.
Does this JavaScript formatter modify my code logic?
No, the formatter only changes whitespace, indentation, and line breaks. Your code logic, variables, and functionality remain completely unchanged.
What indent size should I use for JavaScript?
Two spaces is the most common convention in the JavaScript community and is used by most popular style guides like Airbnb and StandardJS, though four spaces is also widely accepted.
Can I format minified JavaScript back to readable code?
Yes, paste your minified JavaScript into the input and click "Format / Beautify" to restore proper indentation and line breaks for readability.