📖 Description

JavaScript is the core of web interactivity, but its flexible syntax can easily lead to messy code:

Deobfuscate Minified Code: Restore single-line .min.js files into a readable multi-line format, facilitating bug debugging or code logic learning.
Unify Coding Standards: Automatically handle semicolon (;) completion, indentation alignment, and spaces around operators, making the code compliant with mainstream standards like ESLint.
Identify Logical Flaws: After formatting, the alignment of scopes (curly braces) can visually reveal potential logical nesting errors in closures or conditional statements.
Frontend Performance Optimization: Provide one-click minification to remove comments and whitespace from code, reducing script size and accelerating webpage loading.

This site's tool integrates the industrial-grade js-beautify engine, offering multi-dimensional code processing capabilities:

Multi-level Nesting Recognition: Perfectly handles the structural alignment of nested functions, arrow functions, Promise chains, and asynchronous async/await constructs.
Automatic Property Line Wrapping: For complex object literals or arrays, supports setting automatic line-wrapping logic to improve readability.

Production Environment Ready: Removes all redundant line breaks, spaces, and comments, achieving maximum code size compression while ensuring logic remains unchanged.

IDE-level Visual Experience: Built-in code highlighting engine distinguishes keywords (let, const), variable names, strings, and regular expressions.
Precise Positioning: Equipped with line number display, facilitating quick identification of problem locations during team collaboration or script debugging.

Indentation Style: Freely switch between 2 spaces, 4 spaces, or Tab indentation.
Semicolon Strategy: Supports automatic completion of missing semicolons or maintaining end-of-line simplicity based on personal preference.
Brace Position: Supports setting whether curly braces should start on a new line (Brace Style).

Paste Script: Paste the JavaScript source code to be processed into the main editor window.
Customize Settings: Select parameters like indentation characters and whether to preserve comments in the toolbar according to your project standards.
Execute Conversion:
- Click "Format Code": Instantly obtain a script with elegant structure.
- Click "Minify Code": Obtain the minified single-line script.
Export Result: Click "Copy Code" to directly apply it to your project, or click "Save as .js" to download the file.

Status	Code Snippet Example
Original/Minified Code	`function add(a,b){return a+b;}console.log(add(1,2));`
After Formatting	`function add(a, b) {` `return a + b;` `}` `console.log(add(1, 2));`

Local Computation, No Data Upload:** Your business logic and algorithms are 100% secure.** All formatting logic is executed locally in your browser, never passing through a server, eliminating the risk of code leakage.
Compatible with Latest ECMAScript Features: Perfectly supports ES6+ syntax, including modern features like optional chaining (?.), nullish coalescing (??), and class private properties.
Extremely Fast Response: Even when processing massive scripts with tens of thousands of lines, parsing and redrawing are completed within milliseconds.
Completely Free and Clean: The interface is extremely minimalist, free from distracting pop-ups, allowing you to focus on the code logic itself.

JavaScript Formatter