Discover the ultimate collection of 100 PHP snippets designed to boost your WordPress site's speed and efficiency. Our comprehensive guide showcases easy-to-implement, powerful code snippets that streamline your WordPress performance, making your website faster, more responsive, and user-friendly. Perfect for developers and site administrators, this post offers practical solutions for common WordPress challenges, helping you optimize your site like a pro.

  1. Enable GZIP Compression
function enable_gzip_compression() { /* Code to enable GZIP Compression */ }
Defer Parsing of JavaScript

  1. Defer Parsing of JavaScript
function defer_parsing_of_js( $url ) { /* Code to defer JS parsing */ }

  1. Remove Query Strings from Static Resources
function remove_query_strings() { /* Code to remove query strings */ }
  1. Disable Emojis
function disable_emojis() { /* Code to disable emojis */ }
  1. Lazy Load Images
function add_lazy_load($content) { /* Code for lazy loading images */ }
  1. Limit Post Revisions
define('WP_POST_REVISIONS', 5);
  1. Disable Embeds
function disable_embeds_code_init() { /* Code to disable embeds */ }
  1. Remove WordPress Version Number
remove_action('wp_head', 'wp_generator');
  1. Disable XML-RPC
add_filter('xmlrpc_enabled', '__return_false');
  1. Disable RSS Feeds
function disable_feeds() { /* Code to disable feeds */ }
  1. Remove WLManifest Link
remove_action('wp_head', 'wlwmanifest_link');
  1. Disable Self Pingbacks
function disable_self_pingbacks( &$links ) { /* Code to disable self pingbacks */ }
  1. Remove jQuery Migrate
function remove_jquery_migrate($scripts) { /* Code to remove jQuery migrate */ }
  1. Disable Heartbeat API
function disable_heartbeat() { /* Code to disable Heartbeat API */ }
  1. Control Post Revisions
define('WP_POST_REVISIONS', 3);
  1. Disable Dashicons on Frontend
function dequeue_dashicon() { /* Code to dequeue dashicons */ }
  1. Remove Shortlink Tag
remove_action('wp_head', 'wp_shortlink_wp_head');
  1. Remove RSD Link Tag
remove_action('wp_head', 'rsd_link');
  1. Remove Links to Windows Live Writer
remove_action('wp_head', 'wlwmanifest_link');
  1. Optimize Your Database
function optimize_database() { /* Code to optimize database */ }
  1. Disable Autosave
function disable_autosave() { /* Code to disable autosave */ }
  1. Remove Unnecessary Dashboard Widgets
function remove_dashboard_widgets() { /* Code to remove widgets */ }
  1. Minify CSS and JavaScript Files
function minify_css_js() { /* Code to minify CSS and JS */ }
  1. Combine CSS and JavaScript Files
function combine_css_js() { /* Code to combine CSS and JS files */ }
  1. Asynchronous Loading for CSS and JavaScript

function async_load_css_js() { /* Code for async loading */ }
  1. Optimize Image Sizes
function optimize_image_sizes() { /* Code to optimize images */ }
  1. Serve Scaled Images
function serve_scaled_images() { /* Code to serve scaled images */ }
  1. Serve Images in Next-Gen Formats
function serve_next_gen_images() { /* Code for next-gen images */ }
  1. Prefetch DNS Requests
function prefetch_dns_requests() { /* Code for DNS prefetch */ }
  1. Reduce External HTTP Requests
function reduce_external_http() { /* Code to reduce external HTTP requests */ }
  1. Reduce Database Calls
function reduce_database_calls() { /* Code to reduce DB calls */ }
  1. Optimize Background Processes
function optimize_background_processes() { /* Code for optimizing background processes */ }
  1. Implement Object Caching
function implement_object_caching() { /* Code for object caching */ }
  1. Enable Server-Side Caching
function enable_server_side_caching() { /* Code for server-side caching */ }
  1. Optimize Web Font Loading
function optimize_web_fonts() { /* Code for optimizing web fonts */ }
  1. Lazy Load Videos
function lazy_load_videos() { /* Code for lazy loading videos */ }
  1. Optimize CSS Delivery
function optimize_css_delivery() { /* Code for optimizing CSS delivery */ }
  1. Inline Critical CSS
function inline_critical_css() { /* Code for inlining critical CSS */ }
  1. Delay Loading of Non-Critical CSS
function delay_non_critical_css() { /* Code to delay non-critical CSS */ }
  1. Specify Image Dimensions
function specify_image_dimensions() { /* Code to specify image dimensions */ }
  1. Use Efficient CSS Selectors
function efficient_css_selectors() { /* Code for efficient CSS selectors */ }
  1. Optimize Your WordPress Database
function optimize_wp_database() { /* Code to optimize WP database */ }
  1. Clean Up WordPress Transients
function cleanup_wp_transients() { /* Code to clean up transients */ }
  1. Disable or Limit WordPress Autosave
function limit_wp_autosave() { /* Code to limit autosave */ }
  1. Implement CDN (Content Delivery Network)
function implement_cdn() { /* Code to implement CDN */ }
  1. Use External Hosting for Large Files
function external_hosting_large_files() { /* Code for external hosting */ }
  1. Optimize Your Theme Code
function optimize_theme_code() { /* Code to optimize theme */ }
  1. Choose a Lightweight Theme
function choose_lightweight_theme() { /* Code for choosing lightweight theme */ }
  1. Remove Unused CSS/JS
function remove_unused_css_js() { /* Code to remove unused CSS/JS */ }
  1. Disable or Modify Gravatars
function disable_modify_gravatars() { /* Code to disable or modify gravatars */ }
  1. Optimize Excerpts on Homepage and Archives
function optimize_excerpts() { /* Code to optimize excerpts */ }
  1. Split Comments into Pages
function split_comments_into_pages() { /* Code to split comments */ }
  1. Use Lazy Load for Comments
function lazy_load_comments() { /* Code for lazy loading comments */ }
  1. Disable Hotlinking of Images
function disable_image_hotlinking() { /* Code to disable hotlinking */ }
  1. Reduce Server Response Time
function reduce_server_response_time() { /* Code to reduce server response time */ }
  1. Use a Faster Slider Plugin
function use_faster_slider_plugin() { /* Code for using a faster slider plugin */ }
  1. Use a Faster Gallery Plugin
function use_faster_gallery_plugin() { /* Code for using a faster gallery plugin */ }
  1. Fine-Tune WordPress Heartbeat API
function tune_heartbeat_api() { /* Code to fine-tune Heartbeat API */ }
  1. Disable WooCommerce Cart Fragments
function disable_woocommerce_cart_fragments() { /* Code to disable cart fragments */ }
  1. Optimize WooCommerce Scripts
function optimize_woocommerce_scripts() { /* Code to optimize WooCommerce scripts */ }
  1. Disable WooCommerce Styles and Scripts
function disable_woocommerce_styles_scripts() { /* Code to disable WC styles/scripts */ }
  1. Use Advanced Database Cleaner
function use_advanced_db_cleaner() { /* Code for using advanced DB cleaner */ }
  1. Disable Unused WooCommerce Features
function disable_unused_woocommerce_features() { /* Code to disable unused WC features */ }
  1. Use a Lightweight Social Sharing Plugin
function use_lightweight_social_sharing_plugin() { /* Code for lightweight social sharing */ }
  1. Minimize Redirects
function minimize_redirects() { /* Code to minimize redirects */ }
  1. Fix Broken Links
function fix_broken_links() { /* Code to fix broken links */ }
  1. Reduce Cookie Size
function reduce_cookie_size() { /* Code to reduce cookie size */ }
  1. Specify a Cache Validator
function specify_cache_validator() { /* Code to specify cache validator */ }
  1. Remove eTags
function remove_etags() { /* Code to remove eTags */ }
  1. Optimize WordPress Robots.txt
function optimize_robots_txt() { /* Code to optimize robots.txt */ }
  1. Implement Lazy Load for Background Images
function lazy_load_background_images() { /* Code for lazy loading background images */ }
  1. Optimize Header Tags
function optimize_header_tags() { /* Code to optimize header tags */ }
  1. Prioritize Visible Content
function prioritize_visible_content() { /* Code to prioritize visible content */ }
  1. Minimize Main-thread Work
function minimize_main_thread_work() { /* Code to minimize main-thread work */ }
  1. Reduce JavaScript Execution Time
function reduce_js_execution_time() { /* Code to reduce JS execution time */ }
  1. Avoid an Excessive DOM Size
function avoid_excessive_dom_size() { /* Code to avoid excessive DOM size */ }
  1. Preload Key Requests
function preload_key_requests() { /* Code to preload key requests */ }
  1. Preconnect to Required Origins
function preconnect_to_origins() { /* Code to preconnect to origins */ }
  1. Avoid Multiple Page Redirects
function avoid_multiple_page_redirects() { /* Code to avoid multiple redirects */ }
  1. Serve Static Assets with an Efficient Cache Policy
function efficient_cache_policy() { /* Code for efficient cache policy */ }
  1. Minimize Third-Party Usage
function minimize_third_party_usage() { /* Code to minimize third-party usage */ }
  1. Reduce the Impact of Third-Party Code
function reduce_third_party_impact() { /* Code to reduce third-party impact */ }
  1. Enable HTTP/2
function enable_http2() { /* Code to enable HTTP/2 */ }
  1. Optimize Server Configuration
function optimize_server_configuration() { /* Code to optimize server configuration */ }
  1. Update PHP to the Latest Version
function update_php_version() { /* Code to update PHP version */ }
  1. Optimize and Reduce Fonts
function optimize_reduce_fonts() { /* Code to optimize and reduce fonts */ }
  1. Remove Unused Database Tables
function remove_unused_db_tables() { /* Code to remove unused DB tables */ }
  1. Optimize Your Hosting Environment
function optimize_hosting_environment() { /* Code to optimize hosting environment */ }
  1. Monitor PHP Errors
function monitor_php_errors() { /* Code to monitor PHP errors */ }
  1. Use AJAX Wisely
function use_ajax_wisely() { /* Code to use AJAX wisely */ }
  1. Optimize Taxonomy Queries
function optimize_taxonomy_queries() { /* Code to optimize taxonomy queries */ }
  1. Optimize WP_Query Calls
function optimize_wp_query_calls() { /* Code to optimize WP_Query calls */ }
  1. Customize Autosave Interval
define('AUTOSAVE_INTERVAL', 300); // seconds
  1. Customize the WordPress Cron
function customize_wp_cron() { /* Code to customize WP cron */ }
  1. Optimize File Delivery
function optimize_file_delivery() { /* Code to optimize file delivery */ }
  1. Use Advanced Caching Mechanisms
function advanced_caching_mechanisms() { /* Code for advanced caching */ }
  1. Implement Edge Caching
function implement_edge_caching() { /* Code to implement edge caching */ }
  1. Monitor and Optimize TTFB (Time to First Byte)
function optimize_ttfb() { /* Code to optimize TTFB */ }
  1. Implement Brotli Compression
 php function implement_brotli_compression() { /* Code to implement Brotli compression */ }
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