How to Delete an Image from a Post or Page
There are two things to do in order to delete an image from your post or page. When you delete the image in your page, you also need to delete the it in your Media Library to remove it from your database.
To delete an image from a post or page, select the image and click the “Remove Icon”. This will remove the image from your post but it will still exist inside the media library. If you wish to delete the image entirely from your site, navigate to your media library, select the image you wish to delete and click “Delete Permanently”.