Loading indicators are visual cues that inform users about the progress of a task, such as downloading a file or loading a webpage. They help manage user expectations by showing that a process is ongoing, which can reduce frustration during wait times. Common types of loading indicators include spinning wheels, progress bars, and animated dots. These indicators can vary in design and complexity, but their primary purpose is to enhance user experience. By providing feedback, loading indicators reassure users that the system is working, making it clear that they should wait for the task to complete before taking further action.