WordPress Performance

WordPress Performance.txt

### Sites:
https://gtmetrix.com/
https://developers.google.com/speed/pagespeed/insights/

### Plugins 
https://wordpress.org/plugins/query-monitor/
https://wordpress.org/plugins/autoptimize/
https://wordpress.org/plugins/wp-super-cache/
https://wordpress.org/plugins/ewww-image-optimizer/
https://wordpress.org/plugins/jetpack/
https://wordpress.org/plugins/wp-optimize/

#### Nginx Cache 
# Expire rules for static content

# cache.appcache, your document html and data
location ~* \.(?:manifest|appcache|html?|xml|json)$ {
  expires -1;
  # access_log logs/static.log; # I don't usually include a static log
}

# Feed
location ~* \.(?:rss|atom)$ {
  expires 1h;
  add_header Cache-Control "public";
}

# Media: images, icons, video, audio, HTC
location ~* \.(?:jpg|jpeg|gif|png|ico|cur|gz|svg|svgz|mp4|ogg|ogv|webm|htc)$ {
  expires 1M;
  access_log off;
  add_header Cache-Control "public";
}

# CSS and Javascript
location ~* \.(?:css|js)$ {
  expires 1y;
  access_log off;
  add_header Cache-Control "public";
}

##### Optimize woocommerce 
/**
 * Optimize WooCommerce Scripts
 * Remove WooCommerce Generator tag, styles, and scripts from non WooCommerce pages.
 */
add_action( 'wp_enqueue_scripts', 'child_manage_woocommerce_styles', 99 );
 
function child_manage_woocommerce_styles() {
	//remove generator meta tag
	remove_action( 'wp_head', array( $GLOBALS['woocommerce'], 'generator' ) );
 
	//first check that woo exists to prevent fatal errors
	if ( function_exists( 'is_woocommerce' ) ) {
		//dequeue scripts and styles
		if ( ! is_woocommerce() && ! is_cart() && ! is_checkout() ) {
			wp_dequeue_style( 'woocommerce_frontend_styles' );
			wp_dequeue_style( 'woocommerce_fancybox_styles' );
			wp_dequeue_style( 'woocommerce_chosen_styles' );
			wp_dequeue_style( 'woocommerce_prettyPhoto_css' );
			wp_dequeue_script( 'wc_price_slider' );
			wp_dequeue_script( 'wc-single-product' );
			wp_dequeue_script( 'wc-add-to-cart' );
			wp_dequeue_script( 'wc-cart-fragments' );
			wp_dequeue_script( 'wc-checkout' );
			wp_dequeue_script( 'wc-add-to-cart-variation' );
			wp_dequeue_script( 'wc-single-product' );
			wp_dequeue_script( 'wc-cart' );
			wp_dequeue_script( 'wc-chosen' );
			wp_dequeue_script( 'woocommerce' );
			wp_dequeue_script( 'prettyPhoto' );
			wp_dequeue_script( 'prettyPhoto-init' );
			wp_dequeue_script( 'jquery-blockui' );
			wp_dequeue_script( 'jquery-placeholder' );
			wp_dequeue_script( 'fancybox' );
			wp_dequeue_script( 'jqueryui' );
		}
	}
 
}

/* Defer Parsing of Javascript*/
function defer_parsing_of_js ( $url ) {
if ( FALSE === strpos( $url, '.js' ) ) return $url;
if ( strpos( $url, 'jquery.js' ) ) return $url;
return "$url' defer ";
}
add_filter( 'clean_url', 'defer_parsing_of_js', 11, 1 );

/* JQUERY CDN */
// Load Jquery from CDN
function modify_jquery() 
{ if (!is_admin()) 
	{ wp_deregister_script('jquery'); 
	   wp_register_script('jquery', 'https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js', false, '1.12.4'); 
	   wp_enqueue_script('jquery'); 
} 
} 
add_action('init', 'modify_jquery');


## reduce the post revisions wp-config.php
define('WP_POST_REVISIONS', 4 );