Previously, the related posts with thumbnails were only possible to add using Linkwithin Widget but now by using below script, you can add related suggestions without using the third party services of Linkwithin.
Why this Widget is better than Linkwithin
When you use Linkwithin for showing related posts on your blog, the posts are not always relevant with one another. The suggested posts are chosen randomly, but the widget which you are going to get now lists and shows posts by labels, so the displayed posts are relevant to each other.
How to Add this Widget to Your Blogger Blog
To add this widget to your Blogger blog, follow below instructions.
2. Go to template section and edit its HTML
3. Now press Ctrl+F, find and paste below code just above
4. Press Ctrl+F again and find any of below lines