So link previews have been problematic on the fediverse because Mastodon almost immediately fetches the page after posting/receiving the post.
There are some mitigations on other part of the fediverse, e.g. Misskey fetches the page only when any user actually see the post, and it also has a setting to use a shared preview server.
That aside, can we have a browser feature instead to make this all happen locally, so that there's no automatic server side preview at all?