Pick the bag before you start the coffee bag design
The bag decides the canvas. A stand-up pouch has a folded bottom gusset, a wide front and usually a zipper, so it stands on a shelf and reseals at home. A flat-bottom bag, also sold as a box pouch, stands square like a carton. A side gusset bag is the classic café bag: tall and narrow, its top rolled down and closed with a tin tie. A drip bag is a single serve filter packed in a small sealed sachet, and many new roasters start with a stock kraft bag and a printed sticker.
Pick the type here and the canvas follows. The stand-up pouch starts at 6.125 × 9.5 in, the Roastar size for 10 to 12 oz of coffee; the flat-bottom bag at 5 × 9.25 in, with its zipper 1.5 in and its valve 2.5 in below the top (Roastar); the side gusset bag at 3.625 × 12.85 in for 12 to 16 oz (Roastar); the drip bag sachet at 100 × 125 mm (ECRE); and the sticker at 3.25 × 4 in, which fits 6 to 16 oz bags (Roastar). Your bag maker’s template has the exact size: type it in, and the coffee bag design is drawn at that shape.
The side gusset bag is more than three and a half times as tall as it is wide. GPT Image 2.5 and Seedream 5.0 Pro draw it; Nano Banana 2.1 makes 9:16 at its tallest, so the generator asks you to pick another model for it.











