Top WordPress post thumbnail Plugins to display related posts with thumbnails
If you want to display image thumbnails below your post related to that post category then you can use different post thumbnail plugins listed below.
Yet Another Related Posts Plugin (YARPP)
Yet Another Related Posts Plugin or YARPP is one of the best plugin to display thumbnails. It offers you multiple options such as showing related posts in text or link format and along with thumbnails. Hence you can select either of these two options. It configured to show related posts in feed, so it is very useful in getting additional clicks from feed readers.
Linkwithin Plugin automatically generates thumbnails to your blogs which are aligned perfectly either in horizontal or vertical format based on requirements. You need to sign up in linkwithin.com to get start with this. Add Email address, blog URL, platform etc..Once you added these information, you will get download link, which you need to upload to your wp-content -> plugins folder and activate the plugin. Now, the thumbnails are automatically generated and displayed displayed on the post page of your blogs.
Related Posts Thumbnails
This plugin has more customization options and the thumbnails it generates are better compare to others. It searches for the thumbnail created from the first image if it doesn’t found then you need to generate for all the images.
“Auto Post Thumbnail” is the plugin which you need to use to generate thumbnail for first image.This plugin will take few minutes for generating thumbnails depending on the server resources. The thumbnails displayed with the post title below the image and mouse over effects, a attractive way of displaying related posts. Hence blogger gets more page views.
This plugin automatically display video thumbnails in your template. When you publish your post, this plugin will search for the first video embedded and retrieve a thumbnail for you. Thumbnails can be saved to your media library and set as a featured image automatically. It also supports custom post types and custom fields.