A document feeder is a device commonly found in printers and scanners that automatically feeds multiple sheets of paper into the machine. This feature allows users to scan, copy, or print several pages without manually placing each sheet, saving time and effort. Document feeders can handle various paper sizes and types, making them versatile for different tasks. There are two main types of document feeders: automatic document feeders (ADFs) and manual document feeders (MDFs). ADFs can process multiple pages at once, while MDFs require users to insert each page individually. Both types enhance productivity in offices and homes by streamlining document handling.