As you may already know, you can only set the featured image of your posts using the images available in the Media Library. In May 2014 we published a simple, yet very powerful plugin to overcome this limitation: Nelio External Featured Image (NelioEFI for short). With NelioEFI, you can use any image in the world wide web and set it as your post’s featured image. Since we first released NelioEFI, the plugin has been downloaded over 18,000 times and it’s currently active in more than 5,000 WordPress installations. A few weeks ago, I released a new version of the plugin to improve its compatibility with certain themes, but things didn’t work out as expected. Today, I’ll help you to understand how the plugin works, why it needed the update, what went wrong, and how we fixed it. How Featured Images Work By default, if you want to set the featured image of a post, you can only use one of the images available in the Media Library. As I already said, our plugin tries to overcome this issue and extend the functionality to any image… but before diving into the details of our plugin, I think it’s worth taking a look at how WordPress deals with the images you upload to the Media Library. When
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