An AI Eraser is a tool that allows users to remove unwanted elements from an image, such as objects, people, or text. It's a common feature in modern photo editors, often marketed as a "magic eraser." The user simply has to paint over the unwanted element, and the AI will use inpainting to fill in the space with a realistic background. This is a powerful and intuitive tool that makes it easy to clean up photos and create perfect compositions.