4chan and Imageboard Culture

Abstract

An imageboard is a forum built around posted pictures, where nobody needs an account, every post can be signed “Anonymous,” and old threads are deleted to make room for new ones. The form came from Japan, where Hiroyuki Nishimura’s text forum 2channel (1999) and its offshoot Futaba Channel (2001) made anonymity the default. In October 2003 a 15-year-old New Yorker, Christopher Poole, translated Futaba’s software into English and launched 4chan. With almost no memory and almost no identity, its random board, /b/, became the most productive meme factory on the early web, the birthplace of Anonymous, and later a staging ground for harassment campaigns and the far right. Its spin-off 8chan carried the manifestos of three mass shooters in 2019, and in 2026 Britain’s regulator fined 4chan under the Online Safety Act.

The Japanese Original

On 30 May 1999 Hiroyuki Nishimura, a 22-year-old Japanese student in Arkansas, started 2channel, a text bulletin board on which users posted without registering or giving a name. It grew into one of the largest online communities in the world and a central institution of Japanese internet culture (see Japan’s Digital Culture). When 2channel looked as if it might shut down in 2001, its users set up a refuge: Futaba Channel (2chan.net), started on 30 August 2001. Futaba added image boards built on an open-source script called GazouBBS. Each thread began with a picture, replies could carry pictures too, and threads that stopped receiving replies dropped off the last page and were deleted.

moot

Christopher Poole, who posted as “moot,” was a regular on the anime subforum of the American comedy site Something Awful. He took Futaba’s source code, translated it into English and on 1 October 2003, at the age of 15, opened 4chan.net with a single board, /b/, “Random.” Within months the site added boards for anime, video games, technology and much else, each with a short slash-delimited name. Poole ran it from his bedroom in New York; GoDaddy suspended the domain in February 2004, so it moved to 4chan.org, and when PayPal stopped processing donations in June 2004 the site was down for about six weeks. It never had much money: in February 2009 Poole was $20,000 in debt while the site served millions of visitors.

The rules defined the culture. Names were optional and almost nobody used them. A user could prove continuity only with a “tripcode,” a hashed password appended to a name, and most did not bother. Threads lived only as long as people replied to them. On /b/ almost nothing was off limits except the few things the law required removing. A 2011 study by Michael Bernstein, Andrés Monroy-Hernández and colleagues, based on more than five million /b/ posts, found that most threads spent about five seconds on the board’s first page and less than five minutes on the site before being deleted, and that more than 90 percent of posts were fully anonymous. In July 2008 /b/ alone was estimated to receive 150,000 to 200,000 posts a day.

The Wall Street Journal identified Poole on 9 July 2008. Poole defended the design in public, most prominently in a talk at TED2010 on the value of anonymity online.

The Meme Factory

Because nothing lasted and nobody owned anything, /b/ ran on repetition. A joke survived only if other users kept reposting and varying it, so the jokes that survived were the ones easiest to copy and mutate: image macros with captions in fixed formats, catchphrases, bait-and-switch links. “Caturday” image macros turned into lolcats, a word filter that turned “egg roll” into “duck roll” produced the duckroll and then the Rickroll, and dozens of later formats, from Pedobear to Pepe the Frog in its many variants to the “NPC” meme of 2018, started or matured on 4chan’s boards (see Internet Memes).

The same mechanics produced raids, coordinated pranks against other sites, and the idea of Anonymous as a collective identity: if every poster is Anonymous, then Anonymous is everyone and no one. In January 2008, after the Church of Scientology tried to remove a leaked Tom Cruise video from the web, a post on /b/ on 15 January started Project Chanology, with denial-of-service attacks, prank calls and then street protests in Guy Fawkes masks outside Scientology buildings worldwide (see Anonymous and LulzSec).

Leaks and Campaigns

The design that made 4chan creative also made it useful to anyone who wanted to post something without consequences. On 31 August 2014 private photographs of female celebrities, stolen from Apple iCloud accounts through password attacks, were posted first on 4chan, after which the site said it would enforce the copyright takedown process.

The same month began Gamergate, a harassment campaign against the game developer Zoë Quinn and then against other women in the games industry and critics, coordinated in part on 4chan boards. On 18 September 2014 Poole banned discussion of it. Many of its participants moved to 8chan, a new imageboard that the programmer Fredrick Brennan had launched on 22 October 2013 with even fewer rules, where any user could create a board. On 21 January 2015 Poole stepped down as administrator, citing the stress of the year’s controversies. On 21 September 2015 he sold 4chan to Hiroyuki Nishimura, the founder of 2channel, which by then had been taken from Nishimura in a domain dispute with its American host, Jim Watkins.

/pol/ and 8chan

4chan created its politics board, /pol/ (“Politically Incorrect”), in October 2011 as a replacement for a deleted news board. Through the mid-2010s it became a centre of the online far right, a place where racist and antisemitic material circulated as irony and then without it. In October 2017 a 4chan user calling himself “Q” began posting claims that grew into the QAnon conspiracy theory, and moved to 8chan the next month.

8chan, which Watkins and his son Ron had taken over in 2016, became the place where mass shooters announced themselves. On 15 March 2019 the gunman who killed 51 people at two mosques in Christchurch, New Zealand, posted links to his manifesto and livestream on 8chan before the attack. The perpetrator of the synagogue shooting in Poway, California, did the same on 27 April, and on 3 August a manifesto attributed to the El Paso shooter appeared there less than an hour before an attack at a Walmart that killed 23 people. Brennan, who had left in 2016, publicly called for the site to be shut down. On 4 August the network-security company Cloudflare announced that it would stop serving 8chan; its chief executive, Matthew Prince, wrote: “Unfortunately the action we take today won’t fix hate online.” The site went offline and returned in November 2019 as 8kun, through a Russian hosting provider. The accused perpetrator of the May 2022 racist shooting at a supermarket in Buffalo, New York, wrote that he had begun reading /pol/ in May 2020 and learned the “Great Replacement” theory there.

Regulation

By 2022 4chan had about 22 million unique visitors a month, half of them in the United States. In November 2018 it had moved its work-safe boards to a separate domain, 4channel.org, to win back advertisers, and merged them back in December 2023. On 14 April 2025 an intruder took the site down and leaked its source code and moderator data; it returned on 25 April.

The United Kingdom’s Online Safety Act brought the first sustained regulatory pressure. The regulator Ofcom opened an investigation into 4chan on 10 June 2025. When Ofcom provisionally found in August that the site had ignored two requests for information, 4chan’s lawyer replied that it “will not pay any penalty,” and on 27 August 4chan and the forum Kiwi Farms sued Ofcom in a U.S. court, arguing that British law could not be enforced against American websites. On 19 March 2026 Ofcom fined 4chan £450,000 for lacking age checks and a further £70,000 for two other failures.

Dead End: Anonymity Without Moderation

Poole’s argument for anonymity was that it freed users to be honest and to experiment, and the meme culture of the 2000s showed that it could. What 4chan and 8chan also showed was that anonymity combined with ephemerality and minimal moderation favoured whoever was willing to post the most extreme material, because nothing else distinguished one anonymous post from another and no one paid a price for anything. The boards with rules, such as those for hobbies and technical subjects, remained ordinary forums. /b/, /pol/ and 8chan, whose owners chose not to moderate, became known for harassment and for hosting the manifestos of mass shooters. Poole’s next project, Canvas, an image-remixing community with accounts and moderation, opened in beta on 31 January 2011 and closed in January 2014; in 2016 he joined Google.