JavaScript Beautifier

The JavaScript Formatter (Beautifier) restructures minified, compressed, or poorly formatted JavaScript and TypeScript code into clean, consistently indented, and highly readable source. It's an essential tool for debugging minified production bundles, cleaning up auto-generated code, and maintaining consistent formatting across team codebases without requiring a full IDE setup.

The formatter applies professional coding conventions: proper indentation, consistent brace placement, logical line breaks around control structures, chained method formatting, and template literal handling. It correctly processes modern JavaScript features including optional chaining (?.), nullish coalescing (??), async/await, generators, destructuring, and ES module syntax.

Whether you're inspecting a webpack bundle, debugging a CDN-hosted script, or normalizing code from multiple contributors, this tool produces output that reads like well-maintained source code. All formatting is client-side — your code, which may contain proprietary algorithms, API keys in strings, or business logic, never leaves your browser.