What is CSS minification and concatenation

CSS minification is the process of removing all unnecessary characters from CSS code without changing its functionality. This includes removing spaces, comments, and line breaks, resulting in a smaller file size which improves load times.

CSS concatenation refers to the practice of combining multiple CSS files into a single file. This reduces the number of HTTP requests that a browser needs to make to load a webpage, leading to better performance.

CSS, minification, concatenation, web performance, optimization, file size reduction
Learn about the benefits of CSS minification and concatenation for improving web page load times and overall performance.
// Example of CSS minification function minifyCSS($css) { // Remove comments $css = preg_replace('!/\*.*?\*/!s', '', $css); // Remove whitespace $css = str_replace(array("\r\n", "\r", "\n", "\t", ' ', ' '), '', $css); return $css; } // Example of CSS concatenation function concatenateCSS($files) { $output = ''; foreach ($files as $file) { $output .= file_get_contents($file); } return $output; }

CSS minification concatenation web performance optimization file size reduction

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