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Code Minifier

Minify HTML, CSS, and JavaScript - strips whitespace, comments, and newlines. Shows exact size reduction.

Original Code
Minified Output

Code Minification FAQ

Minification reduces file sizes by 30-70% by removing whitespace, comments, and newlines. Smaller files load faster - a 100ms improvement in load time can increase conversions by 1%. For JavaScript, minifiers also rename variables to single letters. Always serve minified files in production and keep the original for development.

Minification removes unnecessary characters from source code - the result is still valid code. Compression (gzip/Brotli) encodes the file in a compressed binary format for transfer; the browser decompresses it. Both are complementary - minify first, then serve with gzip compression. Modern CDNs handle gzip automatically; you control minification in your build pipeline.

Source maps are JSON files that map minified/compiled code back to the original source, enabling debugging in production using browser DevTools. Generate them with Webpack, Vite, or Rollup using the sourcemap: true option. Browsers only load source maps when DevTools is open - they have no performance impact on regular users.