JavaScript Formatter
Format, minify and customize JavaScript
JavaScript Input
Result
What is a JavaScript Formatter?
A JavaScript Formatter is a tool that transforms unformatted or hard-to-read JavaScript into a clear, indented representation. Especially with minified production code or hastily written code, a formatter helps you recognize the structure and logic at a glance. This tool uses Prettier, the widely adopted code formatter, to deliver consistent and professional results. You can customize options like semicolons and quote style to match your project's coding standards and personal preferences.
How do I use the JavaScript Formatter?
Paste your JavaScript code into the input field and click "Format" for a nicely indented display, or "Minify" to remove comments and unnecessary whitespace. Through the options, you can specify whether semicolons should appear at line ends and whether single or double quotes are used. You can copy the result to your clipboard with a single click. The formatter supports modern JavaScript including ES6+ syntax, arrow functions, destructuring, and template literals.
Why format JavaScript online?
Well-formatted JavaScript code is easier to read, debug, and maintain. Consistent formatting is especially important in teams and prevents unnecessary discussions about code style. Minification is useful when you want to quickly reduce the size of a file. Since the tool runs entirely in your browser, no data is sent to any server. Your code remains private and secure on your device. Ideal for quick formatting without any local installation required.
More Tools
Also try our HTML Formatter for HTML code, the CSS Formatter for stylesheets, or the JSON Formatter for API responses.