Optimize WooCommerce For Web Vitals

remove-not-needed-libraries.php

<?php
/**
 * Disable WooCommerce block styles (front-end).
 */
function slug_disable_woocommerce_block_styles() {
	if( function_exists( 'is_woocommerce') ) {
		if( !is_woocommerce() && !is_cart() && !is_checkout() ) {
			wp_dequeue_style( 'wc-block-style' );	
			wp_dequeue_style( 'wp-block-library' );
			wp_dequeue_style( 'woocommerce-layout' );
			wp_dequeue_style( 'woocommerce-smallscreen' );
			wp_dequeue_style( 'woocommerce-general' );
			wp_dequeue_style( 'photoswipe' );
			wp_dequeue_style( 'photoswipe-default-skin' );
			wp_dequeue_script( 'wc-add-to-cart' );
			wp_dequeue_script( 'photoswipe' );
			wp_dequeue_script( 'photoswipe-ui-default' );
			wp_dequeue_script( 'wc-cart-fragments' );
		}
	}
}
add_action( 'wp_enqueue_scripts', 'slug_disable_woocommerce_block_styles', PHP_INT_MAX );

add_filter( 'woocommerce_enqueue_styles', function($arr) {
	if( function_exists( 'is_woocommerce') ) {
		if( !is_woocommerce() && !is_cart() && !is_checkout() ) {
			return [];
		}
	}
	return $arr;
} );

/**
 * Remove lightbox
 */
add_action( 'wp', function() {
   remove_theme_support( 'wc-product-gallery-lightbox' ); // removes photoswipe markup on frontend	
}, PHP_INT_MAX );