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Since 2000, more and more newsrooms, in France or elsewhere in the world, have established fact-checking headings or rubrics. Their contents make it possible to verify the veracity of claims by politicians and other actors. This practice is not new. It broadly revisits an older fact-checking practice, born in the United States in the 1920s and based on an exhaustive and systematic checking of journalistic contents before publishing. “Modern” fact-checking embodies both the willingness of web newsrooms to reconnect with verified contents (despite the structural and economic crisis of the press) and the ability to capitalize on new tools for easy access to information—at the risk of overcoming their prerogatives and of disrupting the professional logics established within their media.