Hi @andmilne,
I just published a plugin for this: https://bubble.io/plugin/link-preview-1490419628548x723854579525484500
You just need to get an API key from the service (linkpreview.net) and put it into the plugin settings, and you’re good to go! Check out the plugin link above though for some more instructions on how to use it if you’re still new to Bubble.
I’ve also created a sample in the forum app so that you (and others) can study. Enjoy and let me know if you have any questions!
Sample Page Preview: https://forumapp3.bubbleapps.io/version-test/link_previews
Sample Page Editor: https://bubble.io/page?type=page&name=link_previews&id=forumapp3&tab=tabs-1
Gaby | Coaching Bubble