Text fields are areas in a digital form or application where users can input text. They are commonly used in websites, software, and mobile apps to collect information such as names, addresses, or comments. Text fields can vary in size and may allow for single-line or multi-line input, depending on the design and purpose. These fields often include features like placeholder text, which provides a hint about what information to enter, and validation rules to ensure the input meets specific criteria. Text fields are essential for user interaction and data collection in various digital environments, enhancing the overall user experience.