Templates: blog, launch, changelog, docs

Same query params on preview and paid URLs. color is the accent hex (default #C45C26). Author and date are omitted when empty — we do not invent them.

blog

/og/<siteKey>/blog?title=…&author=you — post cards. Optional subtitle and color.

launch

/og/<siteKey>/launch?title=…&subtitle=… — ship-day cards.

changelog

/og/<siteKey>/changelog?title=…&version=… — release notes.

docs

/og/<siteKey>/docs?title=…&section=… — docs and guides.

See live examples or try it on the lander.