JavaScript Formatter

Reference

What is JavaScript formatting?

JavaScript formatting (or beautifying) transforms minified, obfuscated, or inconsistently styled JavaScript into clean, readable code with proper indentation, line breaks, and spacing. This is essential when working with minified production code, debugging bundled scripts, or standardizing code style across a team. The formatter handles functions, objects, arrays, control flow statements, arrow functions, template literals, and modern ES2024+ syntax. Minification does the reverse — removing all unnecessary whitespace and comments to reduce file size for production deployment.

Formatting features

This formatter applies several transformations to improve readability: Indentation — nested blocks (if, for, while, function, arrow functions) are indented consistently. Line breaks — each statement appears on its own line; opening braces follow their statement, closing braces align with the start. Spacing — operators (=, ===, +, &&), commas, and colons get consistent spacing. Semicolons — existing semicolons are preserved; the formatter does not add or remove them, respecting your project's style preference.

Privacy

All formatting runs 100% in your browser. No JavaScript code is sent to any server.