The Cover Maker · Part of The Creator Mainframe

A Substack cover in three minutes.

Type two or three lines. Pick a layout and a color. Download a 1200×630 PNG. The counters go red the moment a line will not fit, so nothing ever wraps into the line below it. Nothing is uploaded; it renders on your machine.

The link keeps your layout, color, and copy in the address, so a row in Notion can hold the editable cover forever (that is the Cover design column). Photos are never in the link; re-drop the file.

1 · Layout

2 · Background

3 · Your copy

4 · Text color

The limits are the feature

Every cover that ever looked broken was a line that wrapped into the line under it. Each layout here has a measured ceiling per slot, and The Creator Mainframe's cover prompt writes copy to those exact numbers, with a character count next to every line, so the copy fits on the first try. You paste, you click download.

LayoutSlots and hard limitsBest for

This is one piece of a system that runs everything around your Substack writing. See the whole Creator Mainframe →