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Are you looking to optimize the performance of your WordPress website? One effective technique is enabling gzip output compression. Gzip compression reduces the size of the files sent from your server to your visitors’ browsers, resulting in faster load times. In this article, we will show you how to enable gzip output compression in WordPress, helping you enhance your website’s speed and improve user experience.
function wpturbo_enable_gzip_compression() {
if (extension_loaded('zlib') && !ob_get_level()) {
ob_start('ob_gzhandler');
}
}
add_action('init', 'wpturbo_enable_gzip_compression');
The code snippet provided enables gzip output compression on a WordPress website. Gzip compression reduces the size of the HTML, CSS, JavaScript, and other files sent from the server to the client’s browser, resulting in faster page load times.
The wpturbo_enable_gzip_compression() function is defined to check if the ‘zlib’ extension is loaded and if the output buffer (ob) is not active.
The extension_loaded('zlib') function checks if the zlib extension is loaded in PHP. The zlib extension provides functions for data compression and decompression in PHP.
The !ob_get_level() condition checks if the output buffer is not already active. The ob_get_level() function returns the level of nested output buffering handlers or 0 if output buffering is disabled.
If both conditions are met, the function starts the output buffer using ob_start('ob_gzhandler'). The ob_start() function turns on output buffering with a user-defined output handler. In this case, ob_gzhandler is used as the output handler, which applies gzip compression to the output buffer.
Finally, the add_action('init', 'wpturbo_enable_gzip_compression') line hooks the wpturbo_enable_gzip_compression() function to the ‘init’ action in WordPress. The ‘init’ action is fired after WordPress has finished loading but before any headers are sent. This ensures that the gzip compression is enabled early in the WordPress initialization process.
By adding this code to your WordPress website, you can significantly reduce the size of files transmitted over the network, resulting in faster page load times and improved website performance.