JavaScript Formatter Online
Beautify or minify JavaScript instantly in your browser.
What Is a JavaScript Formatter?
A JavaScript Formatter is a free online tool that cleans up and restructures JavaScript code. In Beautify mode it adds consistent indentation, puts each statement on its own line, and makes nested blocks easy to follow. In Minify mode it strips all whitespace and comments to produce the smallest possible JS file for production deployment. Both modes handle ES6+ syntax including arrow functions, template literals, destructuring, and spread operators.
How to Use JavaScript Formatter
- Choose Beautify to format JS with indentation, or Minify to compress it.
- Paste your JavaScript into the input panel, or click Load Sample to try an example.
- The formatted output appears instantly in the right panel.
- Click Copy to copy the result to clipboard.
Features
- Beautify mode with 2-space or 4-space indentation
- Minify mode strips whitespace and comments
- Handles ES6+ syntax: arrow functions, template literals, destructuring
- Preserves string contents and inline comments
- Copy result to clipboard in one click
- Runs entirely in your browser — zero data uploaded
FAQ
What is a JavaScript Formatter?
A JavaScript Formatter is a free online tool that takes unformatted or minified JavaScript code and reformats it with consistent indentation and line breaks, making it easy to read and debug.
What is the difference between beautify and minify JavaScript?
Beautify adds indentation and line breaks so the code is human-readable. Minify removes all whitespace and comments to produce the smallest possible file for faster page loads.
Is my JavaScript code sent to a server?
No. All formatting happens entirely in your browser. Your code never leaves your device.
Does this tool support TypeScript?
The formatter handles standard JavaScript syntax including ES6+ features. TypeScript-specific syntax such as type annotations may not be fully preserved after formatting.