I have some chat groups where we share/save HN links (https://news.ycombinator.com/item?id=14731830 for example).
Unfortunately, the article names aren't shown as a link preview and the URL doesn't have a text.
It would be awesome if it showed a link preview with the article title in the chat, for example via Open Graph Protocol (ogp.me).
It's also really lightweight. Just a meta tag: