- Cardstock's Open Graph API is free during the launch period with no credit card required.
- It generates polished, on-brand social previews from a single URL, rendered on the fly using Satori without a headless browser.
- Users can get an API key, add a Cardstock URL with query parameters (title, subtitle, theme) to their og:image tag, and deploy quickly.
- A live preview allows users to see the OG image update in real-time as they type.