ToonCrafter is an AI model that turns 2–4 static cartoon keyframes into fluid, visually consistent animations. Using advanced image-to-video diffusion techniques adapted for cartoons, ToonCrafter synthesizes intermediate frames rather than merely interpolating pixels, producing natural motion that preserves the original art style. Artists can optionally provide sparse sketches to guide how elements move, and they can add text prompts to add or refine animation effects and mood. Outputs are ready-to-share MP4 videos (up to 16 frames at 512×320), making it simple to create short animated loops, promotional clips, or in-between sequences for longer projects. Practical benefits include dramatic time savings for animators who want clean in-betweens without manual frame-by-frame work, quick prototyping for graphic novel panels, and easy production of social media–ready cartoon content. ToonCrafter handles large nonlinear motions and occlusions better than traditional interpolation tools, maintaining temporal coherence and semantic fidelity to the source images. The model is accessible to users without deep animation skills: upload keyframes, optionally add sketches or text prompts, set style and color preferences, and generate the animation. Limitations include short maximum length (16 frames) and modest resolution (512×320), plus higher computational cost for best-quality outputs. Also note there is no single official commercial web app from the original authors—third-party implementations may vary. In short, ToonCrafter is ideal for animators, illustrators, marketers, and hobbyists who want to quickly produce high-quality, style-faithful cartoon animations from stills with intuitive control via sketches and text prompts.