A book publisher is a company or individual responsible for producing and distributing books. They handle various aspects of the publishing process, including editing, design, printing, and marketing. Publishers work with authors to refine their manuscripts and ensure that the final product is ready for readers. In addition to traditional print books, many publishers also produce digital formats, such as e-books. They play a crucial role in the literary world by helping to bring new stories and ideas to the public, contributing to the overall culture of reading and education.