On Telegram, the picture decides whether a reader stops on your post. Promos in other channels, announcements in yours and stories all need different shapes, and the maker builds them all from one idea.
Telegram formats in the maker: landscape post 1280×720, post 1080×1080, portrait post 1080×1350, story 1080×1920. Tick the ones you need and choose how many picture variants to make for each, from one to four.
1280×720 looks good in the feed on both phone and desktop, while square and 4:5 take more space in the mobile app. When buying promos, make 2-3 copy versions: different channels respond to different offers. Use 1080×1920 for channel stories.
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.