What Minification Actually Saves
Minification strips comments, whitespace and redundant syntax from HTML, CSS and JavaScript. Typical savings before compression run 30-60% for hand-written CSS and JavaScript; after gzip or brotli the gap narrows, but minified files still parse faster and cache smaller. The real numbers across the three languages are measured in the minification guide.
This tool suits quick one-off jobs - minifying an inline snippet, checking what a build step would do, or beautifying minified code back into something readable. In a real project the bundler should own minification: keep readable source in version control and generate minified output at build time.