Build a web tool that removes image backgrounds and enhances product or profile photos. Numbered features: 1. Drag-and-drop image upload (PNG, JPG, up to 10 MB). 2. One-click background removal using an image processing AI API. 3. Replace the background with solid colors, a gradient, or an AI-generated scene from a text prompt. 4. Batch mode: process up to 20 images at once for product catalogs. 5. Basic cleanup tools: crop, resize to marketplace presets (Amazon, Shopify, Etsy square), and shadow addition for product shots. 6. Side-by-side before and after preview. 7. Download as PNG with transparent background or JPG with the new background. 8. Free tier with 5 images per day and a paid tier for batch and HD output. Use an AI app builder connected to an image processing API; most of the work is a fast, clean upload and preview flow.