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<?php

add_action('sneeit_optimize_images', 'sneeit_optimize_images');
function sneeit_optimize_images() {
	add_action( 'wp_enqueue_scripts', 'sneeit_optimize_images_enqueue', 1 );
	add_filter( 'sneeit_articles_get_post_image_before', 'sneeit_optimize_attachment_add');
	add_filter( 'sneeit_articles_get_post_image_after', 'sneeit_optimize_attachment_remove');
}

/*in case need optimize src*/
function sneeit_optimize_images_get_attachment($attr) {
	if (!empty($attr['src'])) {
		$attr['data-s'] = $attr['src'];
		$attr['src'] = 'data:image/gif;base64,';
	}
	if (!empty($attr['srcset'])) {
		$attr['data-ss'] = $attr['srcset'];
		unset($attr['srcset']);
	}		
	if (!empty($attr['sizes'])) {		
		unset($attr['sizes']);
	}
	return $attr;
}