What does a book proofreader do?

Book proofreaders examine a book's draft or manuscript for errors before it is published. They are usually the first person an author goes to during the editing process before their manuscript or draft is passed on to an editor for more in-depth corrections and re-writes. As a book proofreader, your job duties include reading the text thoroughly to check for grammar and spelling errors, typing mistakes, and inconsistencies in wording. Some book proofreaders also fact-check dates or other assertions in the text to make sure they are cited accurately. Depending on the author and publisher, you may review the manuscript before and after it has gone through a round of editing to make sure you catch as many errors as possible before the book is published.