Every shared link now carries a picture

Paste a MeshWeaver link into a chat and the receiving app fetches the page once, reads what it says about itself, and draws a card. Until now that card was thin: the Store shared into iMessage as the word "Store" beside a favicon the size of a fingernail, because the picture the page offered was a dark rectangle with the title on it and nothing else, and the page did not say how big that picture was — which is what several apps decide by.

Three things change.

The card shows what the page knows about itself. The page's own mark is drawn large on the right, its category sits above the title, its description below it, a price appears as a chip when the page sells something, and the footer says which instance and which path the link points to. A store root that has a headline and a tagline but no description now shows the tagline — it was blank before.

A page with no mark still gets a picture. A rounded badge in the card's colour, carrying the page's initial, stands in for a mark the page never authored. Two such pages still share with two different pictures.

Every page has a card — not only public nodes. The home page and any route that is no public node share as the instance itself: its name and host on the same card. Nothing about a private page reaches that card; it says only what the site already says about itself. And every card now declares its type and size in the page's head, with the same picture mirrored for the apps that read the twitter:* tags, so a receiving app can show the large layout without a second fetch.

Nothing about who may see a page changes. The card is drawn only for a page a stranger may open, by the same rule that decides whether the page itself is served to one.