Pepys’s diary was first published in 1825, in a highly selective version edited by Lord Braybrooke. This was a starkly different journal from the versions read today, cutting most of Pepys’s personal life, his details of everyday London and (with the exception of some court scandal) all the sex. This chapter investigates how the diary came to be published, including the shrewd tactics of the diary’s shorthand transcriber John Smith and its publisher Henry Colburn. On release, the diary drew influential admirers such as the novelist Walter Scott and the historian Thomas Macaulay. Early responses focused on the diary’s value as entertainment, on censorship, and on the questions that it raised about historical value. The chapter considers how the diary changed – or did not change – ideas of the Restoration period, the diary’s influence on the writing of social history, and the extent to which its publication followed Pepys’s plans for his library.