Hi folks, I've created a Slack App that shows previews for links to stories and comments pasted in Slack. You can install it here: https://news.ycombinator1.com/ (note the "1" in the URL)

I've made this part of the original app which lets you take any URL and add a "1" to get social media previews elsewhere, such as Twitter. Original post here: https://news.ycombinator.com/item?id=30181167

Source: https://github.com/statico/ycombinator1.com

Enjoy!