The draft — or a document — drawn for a few products in its formats, on one PNG (decision 195): each cell as a render draws it, at the size the sheet gives it.

JSON by default: {image, media_type, width, height, cells, of}, the image base64 and each cell where it is, its product, format and warnings, and — drawn from the template's own draft or version — editor_url, the editor on that product in that format; Accept: image/png answers the PNG itself. Drawn by the render worker, which the API waits for (503 sheet-busy when it cannot in time).