JavaScript Beautifier

JavaScript Beautifier

Beautify minified JavaScript or minify pretty JS. Format properly indented, readable code.

What is JavaScript Beautifier?

JavaScript beautification formats minified JS into readable code with proper indentation, line breaks, and structure. Minified JS like "var a=b+c;function d(e){return e*2}" becomes properly formatted. Essential for: debugging production errors, learning from minified libraries, code reviews of compressed bundles.

How to use

  1. Choose Beautify or Minify — Two-way conversion
  2. Paste JavaScript — Any JS code
  3. Click Process — Reformatted output
  4. Copy result — Use in your editor

Tips

  • For production: use Webpack, Vite, ESBuild — better than online tools
  • For debugging minified code from CDN: this tool helps quickly
  • Combine with browser DevTools' built-in pretty-print
  • ES6+ syntax may need specialized parser for perfect formatting

FAQs

Can it handle modern ES6/ES2020?

Basic formatting yes. Complex syntax (optional chaining, nullish coalescing) may need Prettier for accurate handling.

Does it preserve comments?

Beautify: yes. Minify: comments removed for smaller size.

Safe for production?

Tool is basic. For production minification, use proven tools (Terser, ESBuild, Rollup) which handle edge cases better.

Related

HTML Beautifier · CSS Beautifier · JSON Formatter

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