: Essential if you want to turn paper documents into searchable, editable PDF or Word files.

: The ability to scan both sides of a page in a single pass.

: Brother DS-640 Compact Mobile Document Scanner Weighing just 1.5 lbs, this USB-powered unit is ideal for students or mobile professionals. While it lacks an automatic feeder, its portability and sub-$100 price point make it a top budget pick.