Pinterest is a visual search engine, and a vertical pin with a clear headline brings traffic for months. The maker creates a series of 2:3 pins from one idea; change the headline and get new pins for free.
Pinterest formats in the maker: pin 1000×1500, post 1000×1000, story 1080×1920. Tick the ones you need and choose how many picture variants to make for each, from one to four.
The best format is 1000×1500. Put what people search for in the headline: "12 small kitchen ideas", "15-minute dinner". Add your logo, since pins are often saved and shared without a caption.
Pictures are drawn by GPT Image 2.5, Nano Banana, Seedream or FLUX; you pick the model before you start. For shapes the main picture doesn't have, the AI extends its edges, so nothing important gets cropped.