Uploaded images are stored as posts with the type “attachment”. Use get_posts() and query for all attachments:
$args = array(
'post_type' => 'attachment',
'numberposts' => -1,
'post_mime_type' =>'image',
'post_status' => 'inherit',
'post_parent' => null, // any parent
);
$attachments = get_posts($args);
if ($attachments) {
foreach ($attachments as $post) {
setup_postdata($post);
the_title();
the_attachment_link($post->ID, false);
the_excerpt();
}
}
Now All images are displayed.
Have any doubt, then comment here!