To help other people find this topic through search: Other platforms refer to this behavior of expanding external links inline as a “link preview”, an “embed”, an “unfurl” (Discord), or a “card” (Twitter). The text and image in the preview is often derived from the contents of
<meta> elements following the Open Graph protocol or the Twitter Cards spec.
I’m not yet comfortable with the term “onebox” for this functionality because it sounds like the opposite of “multiboxing,” which in online video games refers to playing multiple characters, one on each of several computers.
I imagine that not every user will want to see unfurls. One user on a Game Boy-related Discord server doesn’t like unfurls:
can you please delete the MASSIVE link previews
Discord is really annoying with that [expletive]
I directed him to Discord’s
Settings > Text & Images > Show website preview info where a user can turn off unfurls. I’d consider adding a similar user setting to Codidact.
I also imagine that spammers could abuse it. One of the larger Discord servers I’m in disabled unfurls in most channels because a few bad actors were using it to self-promote and crapflood. Might it be tied to trust level, so as not to expand them by default until the user has more positively received questions or answers than negatively received ones?