Note: You probably do not need this plugin. The REST API already supports adding the query param ?_embed to your URL and the response will then include all “embedded media”, including the featured image, and the data you get there is exactly what this plugin gives you. The only reasons to use this plugin at this point are if you prefer to have the featured image data in a top level field in the response rather than among other embedded media in the _embedded field, and if you always want the featured image data in the response rather than having to ask for it with ?_embed. I still use this plugin because I do usually want both these things, but definitely give ?_embed a try before using this plugin. ? Version 2 of the WordPress REST API returns a featured_media field (formerly featured_image) on the post object by default, but this field is simply the image ID. This plugin adds a better_featured_image field to the post object that contains the available image sizes and urls, allowing you to get this information without making a second request. It takes this: "featured_media": 13, And turns it into this: "featured_media": 13, "better_featured_image": { "id": 13, "alt_text": "Hot Air Balloons", "caption": "The event featured hot air balloon rides", "description": "The hot air balloons from...