Recently I updated my popular plugin “Genesis Featured Posts Combo” and added some new features there. So I am introducing the one of the new feature here.
What is the “Fallback Image“? If a post have no featured image or attachment then a default image will show as a featured image on that post. This default image is called Fallback Image.
Process:
Navigate to appearance > widgets and drag&drop the Genesis Featured Posts Combo widget at your registered widget area. Now expend the widget and you will get a “Add New” fallback image button. Upload your fallback image and save the widget.
Output

Will this fallback image automatically be resized according to the selected image size just like how the Featured images get resized?
Yes. It is automatically resizing.
Good to know.