What is Minification?
Minification is the process of removing unnecessary characters from code (whitespace, comments, line breaks) without changing functionality. Minifying HTML, CSS, and JavaScript files reduces their size, resulting in faster downloads and improved page load times.
How Does Minification Work?
Minification tools like Terser (JavaScript), cssnano (CSS), and html-minifier strip everything that browsers don't need: comments, whitespace, long variable names (in JS), and redundant syntax. A typical JavaScript file can shrink 30-60% after minification. Combined with gzip compression, the reduction can exceed 80%.
Most modern build tools handle minification automatically. Webpack, Vite, and Next.js minify production builds by default. For static sites, minification should be part of the build pipeline before deployment. CDNs like Cloudflare can also minify files on the fly, providing an easy optimization without changing your build process.
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