Plugin to generate automatically custom key of the thumbnail of your post image
This plugin can create automaically custom key of url and alt of the post image.
use below code to show thumbnail in your template
$thumb = get_post_meta($post->ID, "Thumbnail", $single = true); $thumb_alt = get_post_meta($post->ID, "Thumbnail-alt", $single = true);
(note: "Thumbnail" will be replaced by your own custom key)