When you share forum topics or forum posts on social media sites like Facebook, the site’s default sharer image will currently be used, which doesn’t work well as representation of specific forum discussions. This plugin will use the first image uploaded as attachment in a topic and set it as as Open Graph image (“og:image”), so social media sites (Facebook, Twitter and more) can use it as thumbnail image to represent the link. The process is fully automatic. There are no settings and no image needs to be picked manually.