JavaScript Formatter - Beautify & Format JS Online
Instantly beautify and format JavaScript code with proper indentation and structure — no external libraries
Developer Tools
JavaScript Formatter - Beautify & Format JS Online
How to Use
1Paste your JavaScript into the input area
2The formatted JS appears instantly in the output
3Copy the beautified result with one click
Frequently Asked Questions
JavaScript Formatter takes minified or poorly structured JS and reformats it by inserting newlines after braces and semicolons, and adding consistent 2-space indentation based on brace depth. String contents are preserved.
Yes. The formatter uses a character-by-character parser that tracks whether it is inside a string (single quote, double quote, or template literal) so formatting characters inside strings are not touched.
No. All processing is done entirely in your browser using JavaScript. Your code never leaves your machine.