JavaScript Formatter
Format and beautify JavaScript code blocks with clean indentations.
JAVASCRIPT Formatter
Result will appear here...About JavaScript Formatter
The JavaScript Formatter & Code Beautifier standardizes JS, JSX, and TypeScript code into clean, readable code with customizable indentation, semicolon insertion, quote style, and bracket spacing.
How to Use JavaScript Formatter
Step 1
Paste your JavaScript or TypeScript code into the editor.
Step 2
Select your formatting preferences.
Step 3
View the cleaned hierarchical code output.
Step 4
Click "Copy JS" to paste into your IDE.
Practical Use Cases for JavaScript Formatter
De-minifying Production JavaScript Scripts
Beautify single-line minified bundle files and browser network scripts for debugging and reverse engineering.
Team Code Standard Alignment
Format unformatted scripts according to Prettier and StandardJS formatting guidelines before committing.
Input & Output Examples
Beautifying Minified JavaScript Function
function add(a,b){if(!a||!b)return 0;return a+b}function add(a, b) {\n if (!a || !b) return 0;\n return a + b;\n}Key Features & Performance
- ✓Beautifies modern ES6+, TypeScript, and React JSX/TSX syntax.
- ✓Configurable indentation (2 spaces, 4 spaces, Tab).
- ✓Configurable single vs double quotes and trailing semicolons.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy formatted JavaScript.
Key Terminology & Definitions
AST (Abstract Syntax Tree)
A tree representation of the abstract syntactic structure of source code used by formatters to rebuild clean code formatting.
ECMAScript (ES6+)
The official standardized specification for modern JavaScript, featuring arrow functions, modules, and async/await.