Seedream4.io is an independent web playground for ByteDance’s Seedream 4.0, combining text-to-image generation, image editing, and multi-image workflows in a single, streamlined experience. Create visuals from prompts or image inputs, keep characters/styles consistent with reference images, and refine outputs using control tools like masks, sketches, edges, and depth guidance—then export in up to 4K for print, ads, product shots, UI mockups, and storyboards. You can start free with no credit card, and paid plans include private generations and a commercial license for professional use.