Open Graph
A metadata standard that controls how a link previews when shared — the title, description and image that appear in the card.
Open Graph is a set of <meta> tags a page puts in its HTML to tell social platforms how to render its link preview. og:title, og:description and og:image decide the headline, blurb and thumbnail people see when your URL is posted — the difference between a rich, clickable card and a bare blue link.
Every shared link is judged on this card before anyone clicks, so it's worth setting deliberately — especially og:image, which dominates the card visually. It's the same machinery that powers a clean permalink preview and the links on your link in bio page.
See also