Magic Post Thumbnail can automatically generate featured images for your WordPress pages.
Operation is quite simple. Images are retrieved from images databases (like Google). Thanks to these APIs, these images are generated based on your post title, categories or tags.
Settings allow you to configure some options for your automatics images : Image bank, language search, posts types chosen, image type, free-to-use or not, image size and much more.
You can :
If you meet a problem with pro version, support will help you under 24 hours.