Build once, scale to many
A master built with the rules survives any size you add later.
What's new
A master built with absolute positions survives one size; every other size was a rebuild. The recipe now: relative sizing on the root so elements keep their share of the canvas, a layout on the content stack so things reflow instead of overlap, a focal point on every image so the crop keeps the product in frame at any ratio, and text that fits its box.
Add sizes
Add sizes from the format picker and each new one is derived from the master using the rules you set. Fix something in one size and it propagates or stays local depending on your edit mode. Add a custom size and the editor derives it from the nearest format; choosing the source format yourself is in build.
Format groups
Group formats into sets like Desktop and Mobile or and other platforms. Name them, reorder them, and show, hide, export or duplicate a group in one action. The order drives the canvas, preview and export order.
