Ergonomic document holders are devices that are designed to improve the posture and comfort of computer users who frequently refer to printed materials while working. They hold the document at the correct angle and height to reduce neck and eye strain, and can also help to prevent repetitive strain injuries and wrist pain. Some document holders can be adjusted to different angles and positions to suit individual needs, and may also include features such as non-slip surfaces and paper guides. Ergonomic document holders can improve productivity and comfort in the workplace, particularly for tasks that involve extensive reading or data entry. They are commonly used in offices, schools, and libraries, and can benefit anyone who spends long hours working at a computer.