A proofreader is a professional who reviews written content to identify and correct errors in grammar, punctuation, spelling, and formatting. Their primary goal is to ensure that the text is clear, accurate, and free of mistakes before it is published or printed. Proofreaders often work on various materials, including books, articles, and marketing materials. In addition to correcting errors, proofreaders may also check for consistency in style and adherence to specific guidelines, such as those set by The Chicago Manual of Style or APA. They play a crucial role in the publishing process, helping to maintain the quality and professionalism of written communication.