All of the codes below will be place on your function.php

Change number of products displayed per page

add_filter( 'loop_shop_per_page', create_function( '$cols', 'return 1000;' ), 20 );

Remove subcategory count

image-001

add_filter( 'woocommerce_subcategory_count_html', 'remove_subcategory_count' );
function remove_subcategory_count() {
	// No count
}

Change the woocommerce subcategory thumbnail to full width.

function woocommerce_subcategory_thumbnail( $category ) {
	$small_thumbnail_size	=	apply_filters( 'single_product_small_thumbnail_size', 'full' );
	$dimensions          	=	wc_get_image_size( $small_thumbnail_size );
	$thumbnail_id        	=	get_woocommerce_term_meta( $category->term_id, 'thumbnail_id', true  );
	
	if ( $thumbnail_id ) {
	  	$image = wp_get_attachment_image_src( $thumbnail_id, $small_thumbnail_size  );
	  	$image = $image[0];
	}else {
	  	$image = wc_placeholder_img_src();
	}
	
	if ( $image ) { 
	  	$image = str_replace( ' ', '%20', $image );
		echo '<img src="' . esc_url( $image ) . '" alt="' . esc_attr( $category->name ) . '" width="' . esc_attr( $dimensions['width'] ) . '" height="' . esc_attr( $dimensions['height'] ) . '" />';
	}
}

Add Social media share ( this need to install Addthis plugin )

add_action( 'woocommerce_single_product_summary', 'social_function', 2 );
function social_function(){
	do_action( 'addthis_widget' );
} 

Custom tab

add_filter( 'woocommerce_product_tabs', 'woo_rename_tabs', 98 );
function woo_rename_tabs( $tabs ) {   
	unset($tabs['reviews']);
    unset($tabs['description']);
	$tabs['info'] = array(
            'title' => __( 'Info', 'woocommerce' ),
            'priority' => 1,
            'callback' => 'woo_info_tabs'
			);	
	$tabs['details'] = array(
            'title' => __( 'Details', 'woocommerce' ),
            'priority' => 2,
            'callback' => 'woocommerce_product_description_tab'
			);	
	$tabs['how-to-use'] = array(
            'title' => __( 'How to use', 'woocommerce' ),
            'priority' => 3,
            'callback' => 'woo_how_to_use_tabs'
			);	   
	return $tabs; 
} 
function woo_info_tabs() {  
	echo woocommerce_template_single_title();
	echo woocommerce_template_single_price();
	echo woocommerce_template_single_excerpt();
	echo '<p class="border-style">&nbsp;</p>';
	echo '<div class="add-to-cart-wrap">'; 
	echo woocommerce_template_single_add_to_cart(); 
	echo '</div>'; 
} 
function woo_how_to_use_tabs(){
	echo '<h2>Instructions</h2>';
	the_field( 'how_to_use_tab' );
}

Change the “Add to cart” text button.

add_filter( 'add_to_cart_text', 'woo_custom_cart_button_text' );  
add_filter( 'woocommerce_product_single_add_to_cart_text', 'woo_custom_cart_button_text' );  
function woo_custom_cart_button_text() { 
        return __( 'Add to my bag', 'woocommerce' ); 
} 

Display product category featured image.

add_filter( 'woocommerce_before_shop_loop', 'product_category_featured_image', 1 );
function product_category_featured_image(){
	if( !is_product_category() ){ return; }
	global $wpdb, $wp_query;  
	$cat_obj = $wp_query->get_queried_object(); 
	$featured_image_id = get_woocommerce_term_meta( $cat_obj->term_id, 'thumbnail_id', true );
	$fetured_image_url = wp_get_attachment_image_src( $featured_image_id, 'full' ); 
	?><img src="<?php echo $fetured_image_url[0]; ?>" border="0" width="100%" class="thumbnail" /><?php 
}

Shop page number of products to show.

add_filter( 'loop_shop_per_page', create_function( '$cols', 'return 4;' ), 20 );

Shop product thumbnails image full size.

function woocommerce_get_product_thumbnail( $size = 'shop_catalog', $placeholder_width = 0, $placeholder_height = 0  ) {
 	global $post, $woocommerce;
 	if( ! $placeholder_width ){
 		$placeholder_width = $woocommerce->get_image_size( 'shop_catalog_image_width' );
	}
	if( ! $placeholder_height ){
 		$placeholder_height = $woocommerce->get_image_size( 'shop_catalog_image_height' );
	 	$output = '<div class="featured-image">';
  		if ( has_post_thumbnail() ){
		 	$output .= get_the_post_thumbnail( $post->ID, 'full' ); 
	 	}else{
		 	$output .= '<img src="'. woocommerce_placeholder_img_src() .'" alt="Placeholder" width="100%" />';
	 	}
 		$output .= '</div>';
	}
 	return $output;
}

Single product thumbnails image full size.

apply_filters( 'single_product_small_thumbnail_size', 'full' );

Single product related products move to tabs

remove_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_related_products', 20); 
function woo_custom_product_tab( $tabs ) { 
	$custom_tab = array( 
		'custom_tab' =>  array( 
			'title' => __('Related Products','woocommerce'), 
			'priority' => 9, 
			'callback' => 'woo_custom_product_tab_content' 
		)
	); 
	return array_merge( $custom_tab, $tabs );
}
function woo_custom_product_tab_content() {
	woocommerce_related_products();
}
add_filter( 'woocommerce_product_tabs', 'woo_custom_product_tab' );

Woocommerce default hooks

<?php
/* WooCommerce Hooks
 * @see woocommerce_output_content_wrapper()
 * @see woocommerce_output_content_wrapper_end()
 */
add_action( 'woocommerce_before_main_content', 'woocommerce_output_content_wrapper', 10 );
add_action( 'woocommerce_after_main_content', 'woocommerce_output_content_wrapper_end', 10 );
/* @see woocommerce shop loop number of columns.
 */
function loop_columns() {
	return 5; // 5 products per row
}
add_filter('loop_shop_columns', 'loop_columns', 999)
/*
 * Sale flashes 
 * @see woocommerce_show_product_loop_sale_flash()
 * @see woocommerce_show_product_sale_flash()
 */
add_action( 'woocommerce_before_shop_loop_item_title', 'woocommerce_show_product_loop_sale_flash', 10 );
add_action( 'woocommerce_before_single_product_summary', 'woocommerce_show_product_sale_flash', 10 );
/*
 * Breadcrumbs
 * @see woocommerce_breadcrumb()
 */
add_action( 'woocommerce_before_main_content', 'woocommerce_breadcrumb', 20, 0 );
/*
 * Sidebar
 * @see woocommerce_get_sidebar()
 */
add_action( 'woocommerce_sidebar', 'woocommerce_get_sidebar', 10 );
/*
 * Archive descriptions
 * @see woocommerce_taxonomy_archive_description()
 * @see woocommerce_product_archive_description()
 */
add_action( 'woocommerce_taxonomy_archive_description', 'woocommerce_taxonomy_archive_description', 10 );
add_action( 'woocommerce_product_archive_description', 'woocommerce_product_archive_description', 10 );
/*
 * Products Loop
 * @see woocommerce_reset_loop()
 * @see woocommerce_show_messages()
 * @see woocommerce_template_loop_add_to_cart()
 * @see woocommerce_template_loop_product_thumbnail()
 * @see woocommerce_template_loop_price()
 */
add_filter( 'loop_end', 'woocommerce_reset_loop' );
add_action( 'woocommerce_before_shop_loop', 'woocommerce_show_messages', 10 );
add_action( 'woocommerce_after_shop_loop_item', 'woocommerce_template_loop_add_to_cart', 10 );
add_action( 'woocommerce_before_shop_loop_item_title', 'woocommerce_template_loop_product_thumbnail', 10 );
add_action( 'woocommerce_after_shop_loop_item_title', 'woocommerce_template_loop_price', 10 );
/*
 * Subcategories
 * @see woocommerce_subcategory_thumbnail()
 */
add_action( 'woocommerce_before_subcategory_title', 'woocommerce_subcategory_thumbnail', 10 );
/*
 * Before Single Products
 * @see woocommerce_show_messages()
 */
add_action( 'woocommerce_before_single_product', 'woocommerce_show_messages', 10 );
/*
 * Before Single Products Summary Div
 * @see woocommerce_show_product_images()
 * @see woocommerce_show_product_thumbnails()
 */
add_action( 'woocommerce_before_single_product_summary', 'woocommerce_show_product_images', 20 );
add_action( 'woocommerce_product_thumbnails', 'woocommerce_show_product_thumbnails', 20 );
/*
 * After Single Products Summary Div
 * @see woocommerce_output_product_data_tabs()
  * @see woocommerce_upsell_display()
 * @see woocommerce_output_related_products()
 */
add_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_product_data_tabs', 10 );
add_action( 'woocommerce_after_single_product_summary', 'woocommerce_upsell_display', 15 );
add_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_related_products', 20 );
/*
 * Product Summary Box
 * @see woocommerce_template_single_title()
 * @see woocommerce_template_single_price()
 * @see woocommerce_template_single_excerpt()
 * @see woocommerce_template_single_meta()
 * @see woocommerce_template_single_sharing()
 */
add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_title', 5 );
add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_price', 10 );
add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_excerpt', 20 );
add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_meta', 40 );
add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_sharing', 50 );

/*
 * Product Add to cart
 * @see woocommerce_template_single_add_to_cart()
 * @see woocommerce_simple_add_to_cart()
 * @see woocommerce_grouped_add_to_cart()
 * @see woocommerce_variable_add_to_cart()
 * @see woocommerce_external_add_to_cart()
 */
add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30 );
add_action( 'woocommerce_simple_add_to_cart', 'woocommerce_simple_add_to_cart', 30 );
add_action( 'woocommerce_grouped_add_to_cart', 'woocommerce_grouped_add_to_cart', 30 );
add_action( 'woocommerce_variable_add_to_cart', 'woocommerce_variable_add_to_cart', 30 );
add_action( 'woocommerce_external_add_to_cart', 'woocommerce_external_add_to_cart', 30 );
/*
 * Pagination in loop-shop
 * @see woocommerce_pagination()
 * @see woocommerce_catalog_ordering()
 */
add_action( 'woocommerce_pagination', 'woocommerce_pagination', 10 );
add_action( 'woocommerce_pagination', 'woocommerce_catalog_ordering', 20 );
/*
 * Product page tabs
 * @see woocommerce_product_description_tab()
 * @see woocommerce_product_attributes_tab()
 * @see woocommerce_product_reviews_tab()
 * @see woocommerce_product_description_panel()
 * @see woocommerce_product_attributes_panel()
 * @see woocommerce_product_reviews_panel()
 */
add_action( 'woocommerce_product_tabs', 'woocommerce_product_description_tab', 10 );
add_action( 'woocommerce_product_tabs', 'woocommerce_product_attributes_tab', 20 );
add_action( 'woocommerce_product_tabs', 'woocommerce_product_reviews_tab', 30 );
add_action( 'woocommerce_product_tab_panels', 'woocommerce_product_description_panel', 10 );
add_action( 'woocommerce_product_tab_panels', 'woocommerce_product_attributes_panel', 20 );
add_action( 'woocommerce_product_tab_panels', 'woocommerce_product_reviews_panel', 30 );
/*
 * Checkout
 * @see woocommerce_checkout_login_form()
 * @see woocommerce_checkout_coupon_form()
 * @see woocommerce_order_review()
 */
add_action( 'woocommerce_before_checkout_form', 'woocommerce_checkout_login_form', 10 );
add_action( 'woocommerce_before_checkout_form', 'woocommerce_checkout_coupon_form', 10 );
add_action( 'woocommerce_checkout_order_review', 'woocommerce_order_review', 10 );
/*
 * Cart
 * @see woocommerce_cross_sell_display()
 */
add_action( 'woocommerce_cart_collaterals', 'woocommerce_cross_sell_display' );
/*
 * Footer
 * @see woocommerce_demo_store()
 */
add_action( 'wp_footer', 'woocommerce_demo_store' );
/*
 * Order details
 * @see woocommerce_order_details_table()
 * @see woocommerce_order_details_table()
 */
add_action( 'woocommerce_view_order', 'woocommerce_order_details_table', 10 );
add_action( 'woocommerce_thankyou', 'woocommerce_order_details_table', 10 );
/* Store Event Hooks
 * Shop Page Handling and Support
 * @see woocommerce_redirects()
 * @see woocommerce_nav_menu_item_classes()
 * @see woocommerce_list_pages()
 */
add_action( 'template_redirect', 'woocommerce_redirects' );
add_filter( 'wp_nav_menu_objects',  'woocommerce_nav_menu_item_classes', 2, 20 );
add_filter( 'wp_list_pages', 'woocommerce_list_pages' );
/*
 * Logout link
 * @see woocommerce_nav_menu_items()
 */
add_filter( 'wp_nav_menu_items', 'woocommerce_nav_menu_items', 10, 2 );
/*
 * Clear the cart
 * @see woocommerce_empty_cart()
 * @see woocommerce_clear_cart_after_payment()
 */
if ( get_option( 'woocommerce_clear_cart_on_logout' ) == 'yes' )
	add_action( 'wp_logout', 'woocommerce_empty_cart' );
add_action( 'get_header', 'woocommerce_clear_cart_after_payment' );
/*
 * Disable admin bar
 * @see woocommerce_disable_admin_bar()
 */
add_filter( 'show_admin_bar', 'woocommerce_disable_admin_bar', 10, 1 );
/*
 * Catalog sorting/ordering
 * @see woocommerce_update_catalog_ordering()
 */
add_action( 'init', 'woocommerce_update_catalog_ordering' );
/*
 * Cart Actions
 * @see woocommerce_update_cart_action()
 * @see woocommerce_add_to_cart_action()
 * @see woocommerce_load_persistent_cart()
 */
add_action( 'init', 'woocommerce_update_cart_action' );
add_action( 'init', 'woocommerce_add_to_cart_action' );
add_action( 'wp_login', 'woocommerce_load_persistent_cart', 1, 2 );
/*
 * Checkout Actions
 * @see woocommerce_checkout_action()
 * @see woocommerce_pay_action()
 */
add_action( 'init', 'woocommerce_checkout_action', 10 );
add_action( 'init', 'woocommerce_pay_action', 10 );
/*
 * Login and Registration
 * @see woocommerce_process_login()
 * @see woocommerce_process_registration()
 */
add_action( 'init', 'woocommerce_process_login' );
add_action( 'init', 'woocommerce_process_registration' );
/*
 * Product Downloads
 * @see woocommerce_download_product()
 */
add_action('init', 'woocommerce_download_product');
/*
 * Analytics
 * @see woocommerce_ecommerce_tracking_piwik()
 */
add_action( 'woocommerce_thankyou', 'woocommerce_ecommerce_tracking_piwik' );
/*
 * RSS Feeds
 * @see woocommerce_products_rss_feed()
 */
add_action( 'wp_head', 'woocommerce_products_rss_feed' );
/*
 * Order actions
 * @see woocommerce_cancel_order()
 * @see woocommerce_order_again()
 */
add_action( 'init', 'woocommerce_cancel_order' );
add_action( 'init', 'woocommerce_order_again' );
/*
 * Star Ratings
 * @see woocommerce_add_comment_rating()
 * @see woocommerce_check_comment_rating()
 */
add_action( 'comment_post', 'woocommerce_add_comment_rating', 1 );
add_filter( 'preprocess_comment', 'woocommerce_check_comment_rating', 0 );
/*
 * Text filters
 */
add_filter( 'woocommerce_short_description', 'wptexturize'        );
add_filter( 'woocommerce_short_description', 'convert_smilies'    );
add_filter( 'woocommerce_short_description', 'convert_chars'      );
add_filter( 'woocommerce_short_description', 'wpautop'            );
add_filter( 'woocommerce_short_description', 'shortcode_unautop'  );
add_filter( 'woocommerce_short_description', 'prepend_attachment' );
add_filter( 'woocommerce_short_description', 'do_shortcode', 11 ); // AFTER wpautop()
?>