Columns for Post/Page ID and Thumbnail
The WordPress admin panel listing for posts and pages will show the title, author, categories, tags, and date. However, it is sometimes necessary to know the post ID. This is particularly true when using shortcodes requiring a post ID.
WordPress does not display the post or page ID anywhere. You must hover over the title of the post, look at the link in the browser activity bar, and find the ID.
This option will add a column displaying the post ID on the listing page of posts and pages.
Furthermore, the post/page thumbnail (Featured Image) can also be displayed in a column.
This could help quickly and visually identify posts/pages from the listings page.
Setting up Column ID’s
Click on Posts/All Posts:
Setting up your Thumbnail Column
Adding a Featured Image to your Post
Click on Posts/All Posts. Your featured image should show in the Thumbnail Column.
This adds a column to your Posts Page that gives you a quick reference guide to the thumbnail (featured image) of that page.