Iterate all images of a post

iterate_all_images_of_a_post.php

<?php
  $images = get_posts(
		array(
			'post_type' => 'attachment',
			'post_parent' => get_the_ID(),
			'exclude' => get_post_thumbnail_id() // to exclude the featured image
		)
	);

	foreach($images as $image){
		$img_url = wp_get_attachment_link($image->ID, '<size>', true);
	}
?>