Skip to main content
ddevtools
ToolsBusinessGitHub (opens in new tab)
ddevtools
All ToolsBusiness ToolsGitHub (opens in new tab)
ddevtools

Free developer utilities that run entirely in your browser. Fast, private, and always free.

Developer Tools

  • JSON Formatter
  • Base64 Encoder
  • UUID Generator
  • Hash Generator
  • URL Encoder
  • Timestamp

Business Tools

  • Margin Calculator
  • Meeting Cost
  • Salary Converter
  • Date Calculator

Built with care. Your data stays in your browser.

  1. Home
  3. JavaScript Formatter

JavaScript Formatter

Beautify or minify JavaScript code

spaces
1 lines, 0 bytes
1 lines, 0 bytes

Related Tools

  • TypeScript Formatter - format TypeScript
  • JSON Formatter - format JSON data
  • HTML Formatter - format HTML
  • CSS Formatter - format stylesheets

How to Use JavaScript Formatter

  1. Paste your JavaScript

    Enter or paste the JavaScript code you want to format.

  2. Choose beautify or minify

    Select whether to beautify for readability or minify for production.

  3. Copy the result

    Click Copy to get the formatted JavaScript code.

Frequently Asked Questions

Is the JavaScript Formatter free to use?
Yes, the JavaScript Formatter is completely free with no limitations. Format and beautify as much JavaScript code as you need without registration.
Is my code private and secure?
Yes, all JavaScript formatting happens locally in your browser. Your code is never sent to any server. This is critical for formatting proprietary code, API keys, or sensitive business logic.
What does the JavaScript Formatter do?
The formatter beautifies JavaScript code with proper indentation, consistent spacing, and line breaks. It can also minify code for production by removing whitespace. It supports ES6+ syntax including arrow functions, destructuring, and modules.
Does the formatter validate JavaScript syntax?
Yes, the formatter will detect and report syntax errors in your JavaScript code. If your code has issues like missing brackets or invalid syntax, the tool will show an error message to help you identify the problem.
What JavaScript features are supported?
The formatter supports all modern JavaScript including ES6+ features like arrow functions, template literals, destructuring, spread operators, async/await, classes, and modules. It handles both browser and Node.js code.