Render a branded PDF + PNG artifact from Markdown or HTML

One call that turns Markdown or HTML plus a small branding theme into a branded PDF, a PNG, and a hosted share page — built for AI agents and ChatGPT apps that produce a finished document and need a downloadable, shareable result. Pass the document body in content (Markdown by default, or set inputFormat: html), an optional branding theme (logo, accent color, font, header, footer), and an optional pageSetup (paper size, orientation, margins, scale, viewport). Choose the output formats — pdf, png, or both. Each requested format charges 1 credit from the same shared pool as the rendering endpoints, drawn with the same rdx_ key; the full charge is refunded on a render failure. The response returns short-lived signed URLs for each rendered format plus a shareUrl to a hosted preview page; all expire after expiresIn seconds (default 24h).