JavaScript Beautifier
Format minified JavaScript with proper indentation, line breaks, and readable structure.
Format minified JavaScript with proper indentation, line breaks, and readable structure.
Paste your minified or poorly formatted JavaScript into the input area and click "Beautify JS." The tool adds line breaks after semicolons and braces, applies consistent 2-space indentation based on nesting depth, and produces readable code you can work with immediately.
Minified JavaScript packs everything onto as few lines as possible, making it nearly impossible to read or debug. Beautifying restores the visual structure so you can trace logic flow, identify function boundaries, and understand control structures. This is essential when debugging production issues, reviewing third-party scripts, or reverse-engineering functionality.
This tool uses a basic formatting approach rather than a full AST parser. It works well for typical minified code but may not perfectly handle every edge case such as complex template literals, regex patterns with braces, or deeply nested ternary operators. For pixel-perfect formatting, consider Prettier or ESLint with auto-fix.
All formatting happens locally in your browser using JavaScript. Your code is never uploaded to any server, making this tool safe for proprietary codebases, internal scripts, and sensitive business logic.