adapting-formats

# Resizing an ad Take an image ad that already exists and produce it in the other shapes it has to run in. **Each shape is regenerated, not cropped.** A crop cuts the headline in half and pushes the product out of frame; the ad is rebuilt for the new proportions with the original passed in as a reference, so it stays the same ad rather than becoming a different one. ## Workflow ### Step 1: Get the ad and the shapes - **The ad** — the image file or URL, at the largest version the user has. Without it there is nothing to resize; ask for it and stop. Several ads at once is normal: each is read and planned separately, though they can all be generated in one call at the end. - **The shapes** — the ratios, or the channel they run on. Where the user named a channel rather than ratios, take them from `references/ratios-and-safe-zones.md`. Where neither is given, ask which sizes they need, offering that table's channels and a free-text way out. - **The product photo, where they have one** — a clean shot of the product on its own. It is worth asking for: the ad may show the product small, angled or partly behind copy, and the photo holds its identity far better than the ad can. **Drop the shape the ad is already in.** An ad supplied at `1:1` and asked for the Meta family needs `4:5` and `9:16` — regenerating its own `1:1` bills for a reconstruction of something the user already has. ### Step 2: Read the ad Run `image_analysis` on it once, and separate what the ad is...