JavaScript Formatter - Beautify & Format JS Code
Beautify and auto-indent JavaScript source code for readability.
Processed 100% locally in your browser. Never sent to our server.
About JavaScript Formatter - Beautify & Format JS Code
Formats JS/ES6+ source code with configurable indentation and bracket styles.
What Can You Use This Tool For?
Software engineers, web developers, and API designers use JavaScript Formatter to format production data, debug network requests, validate syntax errors, and streamline daily coding workflows without risking data leaks.
How to Format JavaScript Code
1. Paste JS / ES6+ source code into the editor.
2. The formatter organizes functions, objects, loops, and control structures with clean indentation.
3. Copy formatted JavaScript code directly into your code editor.
Usage Examples
Formatting ES6 Arrow Functions
Input: const add=(a,b)=>a+b; Output: const add = (a, b) => { return a + b; };
Frequently Asked Questions
Can I use this JavaScript Formatter offline without an internet connection?
Yes, once the web page is loaded in your browser, all parsing and code processing execute client-side using JavaScript without requiring active server connections.
Does Numvax log, save, or transmit my code/data?
Never. Numvax operates under a strict client-side privacy architecture. All operations execute strictly inside your local browser memory.
Is there a file size or character limit for this tool?
There is no artificial limit. The tool can process payloads as large as your device memory and browser can handle.
Is this JavaScript Formatter free for commercial use?
Yes, all Numvax developer tools are 100% free for personal, educational, and commercial development workflows with no subscriptions or accounts required.
Is ES2024 / TypeScript syntax supported?
Yes, ES6+ features including async/await, arrow functions, modules, and destructuring format seamlessly.
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