Featured image loading speed improvement by
Preload images for a better performance by
Oxyplug Preload plugin
Oxyplug Preload plugin makes the browsers start loading the featured image that can be the LCP image before the parser arrives to the LCP image line, by adding <link rel=”preload”>. With Oxyplug Preload, the featured images that can be the hero images in the posts, pages, and products will be preloaded and ready to appear with the appropriate dimension depending on the viewport, immediately after the page loaded.