JavaScript Beautifier

Beautify Raw JavaScript Instantly

Raw JavaScript

Formatted JavaScript

Formatted JavaScript will appear here

Error

Please enter JavaScript code.

Understanding JavaScript Beautification

Readable Code

Turn minified or bundled JavaScript into properly indented, statement-per-line code that's easy to follow.

Debugging Minified Code

Beautify a production bundle to set breakpoints and step through logic in browser DevTools.

Learning & Auditing

Format a third-party or scraped script to understand what it actually does before using it.

Local Processing

Your code never leaves your browser — beautification runs entirely client-side.

How JavaScript Beautification Works

This tool re-indents your JavaScript based on block nesting (functions, loops, conditionals), placing each statement on its own line with consistent 2-space indentation. It's purely a whitespace transformation — variable names, logic, and behavior are never altered — making dense or minified code dramatically easier to read.

Key Takeaways

Block-Aware Indentation: Indentation reflects the actual nesting depth of functions, loops, and conditionals.
Non-Destructive: Only whitespace is changed — your code's logic and behavior stay identical.
Client-Side Only: All formatting happens locally in your browser — no data is ever sent to a server.

JavaScript Beautifier - Format JS Code Online