Function og

Renders an Open Graph card.

The whole of what a social preview needs in one call: a background, a headline that wraps and truncates instead of running off the card, a subtitle, a footer, and a shadow so the text stays readable over a photograph. Nothing has to be loaded first, because the face is compiled in.

const card = await og(tinyimg, {
  title: 'How a planner made the decode cheap',
  subtitle: 'Deciding what to decode before decoding it',
  footer: 'tinyimg.gmitch215.dev',
  background: '#0b1020'
});

return card.response({ 'cache-control': 'public, max-age=86400' });
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The report is the part worth reading before serving it: titleTruncated says the headline was cut, and missingGlyphs says the face had nothing for some of the characters, which is what a card with empty boxes in the headline looks like from the inside.