4chan is an anonymous English-language imageboard website. Launched by Christopher "moot" Poole in October 2003, the site hosts boards dedicated to a wide variety of topics, from video games and television to literature, cooking, weapons, music, history, anime, fitness, politics, and sports, among others. Registration is not available and users typically post anonymously. As of 2022, 4chan receives more than 22 million unique monthly visitors, of which approximately half are from the United States.

Christopher Poole, also known online as moot, is an American internet entrepreneur and developer. He founded the anonymous English-language imageboard 4chan in October 2003, when he was still a teenager; he served as the site's head administrator until January 2015. He also founded the online community Canvas, active from 2011 to 2014. Poole was hired by Google in 2016 to work on the Google+ social network and as a product manager. He left the company in 2021.