Optimizing Web Performance: Minification and Bundling

A fast website is crucial for user retention. Performance optimization often starts with asset delivery. Minification is the process of removing whitespace, comments, and shortening variable names in JS and CSS files to reduce file size. Bundling takes multiple modules and combines them into a single (or few) files to reduce the number of HTTP requests. Tools like Webpack or Vite do this automatically. In the past, I manually loaded multiple script tags, which caused a cascade of requests. After bundling, I had one request for my JS, one for CSS. Another low-hanging fruit is image optimization. Serving an 8MB DSLR photo as a background image will kill your load time. Using tools to compress images to WebP format and serving responsive images using the <picture> element or srcset drastically improves the Largest Contentful Paint (LCP) metric.