Part 61: Performance Optimization: Purging, Bundle Size & Minification

Part 61 Technology Updated September 12, 2026

Part 61: Performance Optimization: Purging, Bundle Size & Minification

How Tailwind produces microscopic production stylesheets and delivers 100/100 Google Lighthouse scores.


1. How Purging (Tree-Shaking) Works

Because Tailwind's JIT scanner reads your template files at build time: - If a class is never mentioned in your HTML or JS files, it is never generated. - A typical production stylesheet for an entire multi-page application is usually between 8kB and 15kB gzipped!


2. Production Checklist

  1. Verify content paths in tailwind.config.js cover all source files.
  2. Avoid dynamic class string concatenations.
  3. Enable Gzip or Brotli compression on your web server (Nginx/Cloudflare).

Key Takeaways

  • Tailwind's JIT ensures that production CSS stays tiny and lightning-fast.

In Part 62, we conclude our series with the Enterprise Design System Blueprint with Tailwind CSS!