HTTP/3
HTTP Version 3
The latest HTTP version using QUIC (UDP-based) transport for reduced connection latency and better mobile performance.
Technical Detail
Code http/3 removes whitespace, comments, shortens variable names (in JS), and applies optimizations like dead code elimination. JavaScript minifiers (Terser, esbuild) can reduce file size by 40-70%. CSS minifiers merge duplicate rules, shorten color values (#ffffff → #fff), and remove redundant units (0px → 0). Combined with Brotli compression, minified assets achieve total size reductions of 80-90%. Source maps (.map files) enable debugging minified code by mapping back to original sources.
Example
```javascript
// Simple CSS minifier
function minifyCSS(css) {
return css
.replace(/\/\*[\s\S]*?\*\//g, '') // remove comments
.replace(/\s+/g, ' ') // collapse whitespace
.replace(/\s*([{};:,])\s*/g, '$1') // remove around symbols
.trim();
}
// 1024 bytes → 612 bytes (40% reduction)
```