We'll create fresh WordPress site with Recent Post Lazy Load installed. You have 20 minutes to test the plugin after that site we'll be deleted.
The Widget with some options. This plugin is based on the well-known WordPress default widget ‘Recent Posts’ and enhanced to display thumbnails of the posts.
The thumbnails will be built from the featured image of a post content. If there is neither a featured image nor a content image then you can hide the thumbnail.
The thumbnails appears left-aligned to the post titles. You can set the width and heigth of the thumbnails in the list.
The widget and shortcode is available. You can insert through widget on any sidebar any where easily.