I moved from Blogger to WordPress and I already have decent number of post on my site.
The new wordpress theme required featured image. I did search, and there have many plugins can do it, but non of them work in my case, it only work when the image is uploaded via WordPress (self-hosted).
Since I moved from Blogger, all the image in old posts are hosted on Blogger, not my server.
So, how can I Auto set first image in post (external image) as Featured image?
Thank you very much for your help.