A small lightweight plugin to set external/remote images as post thumbnail/featured image.
WP Remote Thumbnail is a very lightweight WordPress plugin that comes with zero configuration and one-click setup. Using this plugin, you can easily set any external image as the featured image of any post/page or even custom post types.
This plugin automatically adds a custom metabox to each post type that supports post thumbnails. You just need to copy and paste the URL of any image into the metabox and click publish/update.
You can call a remote thumbnail an external featured image. This plugin will help you set any external image as the featured image of any post/page.