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Table Of Contents Toggle the Table of Contents optimize Your Website Via Functions.php File Optimizing Website Via Functions.Php File Enqueue Scripts and Styles Properly Enable Gzip Compression Optimize Images Implement Caching Optimize Database Queries Disable Emojis and Embeds Limit Post Revisions Remove Query Strings from Static Resources Encountering An Error Click on the Table of Contents to navigate. optimize Your Website Via Functions.php File Optimizing Website Via Functions.Php File Enqueue Scripts and Styles Properly Enable Gzip Compression Optimize Images Implement Caching Optimize Database Queries Disable Emojis and Embeds Limit Post Revisions Remove Query Strings from Static Resources Encountering An Error Optimizing a website through the functions.php file in WordPress is a common practice to improve performance, functionality, and other aspects of your website. The functions.php file is part of your theme and can be used to add custom code and functions to your WordPress site. Here are some optimization techniques you can implement using the functions.php file: Enqueue Scripts and Styles Properly: Use the wp_enqueue_script() and wp_enqueue_style() functions to load JavaScript and CSS files efficiently. This helps in proper script loading and reduces page load times. function enqueue_custom_scripts() { wp_enqueue_script(‘custom-script’, get_template_directory_uri() . ‘/js/custom.js’, array(‘jquery’), ‘1.0’, true); wp_enqueue_style(‘custom-style’, get_stylesheet_uri()); } add_action(‘wp_enqueue_scripts’, ‘enqueue_custom_scripts’); Enable Gzip Compression: Gzip compression reduces the size of files transferred between the server and the user’s browser. You can enable it using the following code: function enable_gzip_compression() { if (function_exists(‘ob_gzhandler’)) { ob_start(‘ob_gzhandler’); } } add_action(‘init’, ‘enable_gzip_compression’); Optimize Images: You can automatically compress and serve optimized images using plugins like “Smush” or by adding custom code to your functions.php file. Be cautious when modifying images programmatically, as it might affect their quality. Implement Caching: Caching helps store static content to reduce server load and improve page loading times. Use plugins like “W3 Total Cache” or “WP Super Cache” to handle caching, or implement it yourself using code. Optimize Database Queries: Reduce the number of database queries and optimize the existing ones for better performance. Use the $wpdb object for custom queries and make use of indexes and proper SQL queries. Disable Emojis and Embeds: Remove unnecessary functionality like emojis and oEmbeds if you don’t need them. This can be done in the functions.php file: function disable_emojis() { remove_action(‘wp_head’, ‘print_emoji_detection_script’, 7); remove_action(‘admin_print_scripts’, ‘print_emoji_detection_script’); remove_action(‘wp_print_styles’, ‘print_emoji_styles’); remove_action(‘admin_print_styles’, ‘print_emoji_styles’); remove_filter(‘the_content_feed’, ‘wp_staticize_emoji’); remove_filter(‘comment_text_rss’, ‘wp_staticize_emoji’); remove_filter(‘wp_mail’, ‘wp_staticize_emoji_for_email’); } add_action(‘init’, ‘disable_emojis’); Limit Post Revisions: WordPress stores revisions of posts, which can increase the size of your database. Limit the number of revisions stored or disable them completely to reduce database bloat. define(‘WP_POST_REVISIONS’, 5); // Limit to 5 revisions Remove Query Strings from Static Resources: Query strings in URLs can prevent proper caching. You can remove them using the following code: function remove_query_strings() { if (!is_admin()) { add_filter(‘script_loader_src’, ‘remove_query_strings’); add_filter(‘style_loader_src’, ‘remove_query_strings’); } } add_action(‘init’, ‘remove_query_strings’); Remember to make a backup of your functions.php file before making changes and test each modification on a staging site or local environment before implementing it on your live site. Incorrect code can lead to errors or even a site outage. […]
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