A paper cutter is a tool used to cut sheets of paper to a desired size. It typically features a sharp blade that can be adjusted to make precise cuts. Paper cutters are commonly used in offices, schools, and print shops for tasks like trimming documents, photos, and other paper materials. There are different types of paper cutters, including guillotine cutters and rotary cutters. A guillotine cutter has a straight blade that is lowered onto the paper, while a rotary cutter uses a circular blade that rolls across the paper. Both types help ensure clean and accurate cuts, making them essential for various paper-related projects.