This is a very simple (but useful) plugin. All it does is: adds a “Featured Image” checkbox to the Screen Options when viewing in All Posts mode. when the checkbox is selected, it will add a thumbnail of the post’s Featured Image to the All Posts screen. This allows you to: easily take an inventory of posts to see which are missing featured images (in this day and age, all posts should have a featured image) and quickly scan your postsâ€”it’s frequently easier and quicker to identify a post by its featured image than by scanning titles. No css or js is added. The database is not altered in any way.