Get all images from a post

all-images.php

$post = get_post( get_the_ID() );
$content = $post->post_content;
$regex = '/src="([^"]*)"/'; // Find all the images
preg_match_all( $regex, $content, $matches );
$embedded_images_count = count( $matches[0] );
echo '<pre>' . var_export($matches, true) . '</pre>';
if ( $embedded_images_count > 0 ) {
     for ( $i=0; $i < $embedded_images_count ; $i++ ) {
        $img_src = $matches[0][$i];
        $trim_front = ltrim($img_src, 'src="');
        $trim_back = rtrim($trim_front, '"');
        $image_url = preg_replace("/-\d+[Xx]\d+\./", ".", $trim_back); // Trim the image dimentions from the image
        $gallery_image_id = attachment_url_to_postid( $image_url );

        $caption = wp_get_attachment_caption( $gallery_image_id );
        $popup_image = wp_get_attachment_image_src($gallery_image_id, 'full')[0];
        $gallery_image = wp_get_attachment_image_src($gallery_image_id, 'medium')[0];
        
        echo $caption . '<br>' . $popup_image . '<br>' . $gallery_image . '<hr>';
        
     };
};