This looks very useful, but I use direct img URLs, rather than media (uploaded) images. Therefore, none of the post images are “attached” to the post – the posts simply contain a variety of inline img tags in the HTML content.
Would it be possible for your plugin to be modified such that if no attached image is detected, then the first actual image from the post is used? (just as LinkedIn and Facebook do when you post a URL)
Many thanks for an otherwise excellent plugin