4chan is an anonymous imageboard website launched in 2003 by Christopher Poole, known by the pseudonym "moot." The site is structured around topic-specific boards, the most famous being /b/ (random). 4chan has been a major source of internet slang, memes, and subcultural trends, influencing online humor and communication worldwide. Its culture is characterized by extreme anonymity, ephemeral content, and a chaotic, often self-referential community.

1 History

1.1 Founding and early years (2003–2005)

4chan was created in October 2003 by Christopher Poole, then a 15-year-old student, as a North American counterpart to the Japanese imageboard Futaba Channel (2chan). The site initially mirrored 2chan’s structure, with boards dedicated to anime, manga, and general random content. The /b/ board (random) quickly became the most active, attracting users with its lack of rules and encouragement of chaotic, anonymous posting. Early content consisted largely of anime-related images and crude humor, but the community’s creativity and irreverence began to produce original memes and inside jokes.

1.2 Growth and notoriety (2006–2010)

From 2006 onward, 4chan experienced rapid growth, fueled by the spread of its memes across the broader internet. The /b/ board gained a reputation for its disruptive "raids" on other websites, coordinated pranks, and the creation of viral content such as "Rickrolling" and "LOLcats." In 2008, the site’s notoriety peaked with "Project Chanology," a series of coordinated protests against the Church of Scientology, which brought widespread media attention. By 2010, 4chan had become a central hub of internet subculture, though it also faced criticism for hosting harassment and illegal content.

1.3 Decline and changes (2011–present)

After 2010, 4chan’s user base began to decline as social media platforms like Reddit, Twitter, and later Discord attracted former users. Poole retired as administrator in 2015, and the site was subsequently sold to the Japanese entrepreneur Hiroyuki Nishimura, founder of 2channel. Under new ownership, moderation policies were tightened, particularly on boards like /pol/ (politically incorrect) that had become hotspots for extreme content. In the 2020s, 4chan remains active but has ceded much of its influence to more modern platforms, retaining a loyal core of older users and a steady stream of new ones.

2 Structure and boards

2.1 Board categories

2.1.1 Main boards (e.g., /b/, /pol/, /v/)

The most prominent boards include /b/ (random), /pol/ (politically incorrect), /v/ (video games), and /a/ (anime and manga). /b/ is the site’s default and most anarchic board, where nearly any content is allowed. /pol/ was created in 2011 to contain political discussions and quickly became one of the most controversial boards. /v/ focuses on video game discussion and has spawned many gaming-related memes.

2.1.2 Specialized boards (e.g., /a/, /k/, /mu/)

Specialized boards cater to niche interests: /a/ (anime), /k/ (weapons), /mu/ (music), /tv/ (television and film), /sci/ (science and math), and many others. Each board has its own rules and culture, ranging from serious discussion to laid-back image sharing. There are also boards for specific topics like fitness, cooking, and travel, providing a wide range of content beyond the infamous main boards.

2.2 Posting mechanics

2.2.1 Anonymity and tripcodes

All posts on 4chan are made anonymously by default, with no user registration. Users may choose to enter a name, but doing so is rare. To establish a consistent identity without breaking anonymity, users can employ "tripcodes" — a cryptographic hash generated from a password. If a user types "#password" in the name field, a unique string (e.g., "!abc123") appears, allowing users to verify the same poster across threads while preserving anonymity.

2.2.2 "OP" (Original Poster) and "greentext"

The creator of a thread is called the "Original Poster" (OP). OPs often use "greentext" to tell short stories or share opinions: lines beginning with ">" are automatically colored green, creating a distinctive narrative style (e.g., ">be me"). Greentext stories are a hallmark of 4chan culture, used for humor, sincerity, or trolling.

2.3 Moderation policies

Moderation on 4chan is minimal, especially on /b/, where the only enforced rule is a ban on illegal content (e.g., child pornography, threats of violence). Other boards have stricter moderation, removing spam, off-topic posts, and harassment. Moderators are anonymous volunteers, and bans are usually temporary IP bans. The site does not permanently store user IP addresses, and content is automatically purged after a thread’s lifespan (usually a few days to a week), reinforcing the ephemeral nature of the platform.

3 Culture and memes

3.1 Core principles

3.1.1 Anonymity and lack of accountability

Anonymity is the cornerstone of 4chan’s culture. Users feel free to express opinions, create content, and engage in behavior without fear of personal backlash. This anonymity encourages both extreme creativity and extreme toxicity, as there are few social consequences for actions. The lack of accountability fosters a unique environment where ideas are judged on their merit or humor, not on the reputation of the poster.

3.1.2 Ephemerality and "raiding"

Threads on 4chan have a short lifespan, typically disappearing after a few days if not bumped. This ephemerality encourages rapid, high-volume posting and discourages long-term discussions. "Raiding" refers to coordinated efforts by users to flood another website with traffic, spam, or disruptive content. Raids are often carried out for humor, to protest, or to vandalize online polls and forums, reflecting the community’s chaotic and transient nature.

3.2 Notable memes originating from 4chan

3.2.1 "Rickrolling" and "Chad vs. Virgin"

Rickrolling is a bait-and-switch prank where a user provides a hyperlink that they claim is relevant to the conversation but actually leads to the music video for Rick Astley’s "Never Gonna Give You Up." It originated on 4chan’s /v/ board in 2007 and later became a global internet phenomenon. Chad vs. Virgin is a meme contrasting the hyper-masculine "Chad" (confident, sexually active) with the "Virgin" (timid, inexperienced). The format originated on 4chan as a satirical commentary on social stereotypes and later spread to Reddit and other platforms.

3.2.2 "Pepe the Frog" (non-political aspects)

Pepe the Frog is a cartoon frog created by artist Matt Furie for his comic *Boy’s Club*. On 4chan, users began remixing the character into various emotional states (e.g., "Feels Good Man," "Sad Frog") starting around 2008. Pepe became a versatile meme used to express feelings in a detached, ironic manner. In later years, the image was co-opted for political purposes outside 4chan, but its original use on the site was primarily humorous and emotional.

3.2.3 "Loss.jpg" and other visual memes

Loss.jpg is a webcomic strip drawn by Tim Buckley for his series *Ctrl+Alt+Del* in 2008. The strip, depicting a character crying next to a hospital bed, was mocked on 4chan for its overly dramatic tone. Users created absurdist redraws and reinterpretations, turning it into a meta-meme that mocks poor storytelling. Other visual memes originating from 4chan include "Forever Alone," "Trollface," and "Poker Face," which became staples of internet culture in the late 2000s.

3.3 Slang and terminology

3.3.1 "Anon," "Newfag," "Oldfag"

"Anon" is short for anonymous poster, the default identity on 4chan. "Newfag" is a derogatory term for a new user who is unfamiliar with the site’s conventions. "Oldfag" refers to a veteran user who has been active for years and often expresses disdain for newer members. These terms reinforce a sense of insider culture and generational divides within the community.

3.3.2 "Greentext" storytelling conventions

Greentext is a writing style used on 4chan where each line begins with a ">" character, rendering the text green. Stories follow a formulaic pattern, often starting with ">be me" and recounting a personal anecdote in a deadpan, dramatic, or humorous tone. The format has become a distinct narrative genre, also used on other sites like Reddit’s /r/greentext.

3.3.3 "Troll" and "Flaming" culture

"Trolling" on 4chan refers to deliberately provoking reactions from other users through inflammatory, misleading, or absurd comments. "Flaming" is the act of insulting or attacking another poster, often personally. These behaviors are considered part of the site’s culture, where conflict and chaos are often valued for entertainment. The term "troll" has since broadened to general internet usage, but its roots lie in 4chan’s early community.

4 Impact on internet culture

4.1 Influence on other websites (Reddit, 2chan)

Many features and cultural norms of 4chan have been adopted or adapted by other platforms. Reddit’s default subreddit system and the concept of "subreddits" were inspired by 4chan’s board structure. The anonymity and ephemerality of 4chan influenced the design of ephemeral messaging apps like Snapchat. 2chan (Futaba Channel), 4chan’s Japanese predecessor, also influenced 4chan’s own evolution, creating a cross-cultural exchange of imageboard culture.

4.2 Role in spreading memes and catchphrases

4chan has been the birthplace or early incubator for countless memes that later spread globally. "Rickrolling," "LOLcats," "NOPE" (from the movie *The Omen*), "Do a Barrel Roll," and "All Your Base Are Belong to Us" all gained traction on 4chan before becoming mainstream. Catchphrases like "The internet is serious business," "Tits or GTFO," and "Pics or it didn’t happen" also originated or were popularized on the site.

4.3 Contribution to "weird internet" and humor

4chan’s culture of absurdist, anti-humor, and surrealism contributed to what is sometimes called "weird internet" — a style of humor that rejects conventional punchlines in favor of randomness, non-sequiturs, and self-referential meta-comedy. This style influenced later humor on platforms like Tumblr, Twitter, and TikTok, where users often employ surreal, nihilistic, or intentionally poorly edited content.

5.1 Harassment campaigns (e.g., "Project Chanology")

4chan has been involved in several high-profile harassment campaigns. The most notable is Project Chanology (2008), a series of coordinated pranks and protests against the Church of Scientology, initiated after the church attempted to suppress a leaked Tom Cruise video. While the campaign had a satirical side, it also included serious doxxing and harassment. Other campaigns targeted individuals such as teen actor Jesse Kilgour, who was falsely accused of a crime, and the family of a deceased veteran.

Due to illegal content posted on its boards, 4chan has drawn attention from law enforcement. In 2009, the site received a subpoena from the FBI regarding posts related to a mass shooting. The site has been used by attackers to post manifestos, and authorities have investigated users for threats and child pornography. However, 4chan’s anonymity policies make it difficult to track individuals, leading to ongoing legal debates about the platform’s liability.

5.3 Criticism and bans in various countries

4chan has faced criticism for hosting hate speech, particularly on /pol/. Several countries have blocked the site: China, Tunisia, and Turkey have banned 4chan at various times for content deemed offensive or politically destabilizing. Internet service providers in the UK and Australia have also been pressured to restrict access to certain boards. These bans have had limited impact due to the site’s accessibility via proxies and mirrors.

6 Legacy and current status

6.1 4chan in the 2020s

In the 2020s, 4chan continues to operate with a smaller but dedicated user base. Traffic has declined significantly from its peak in the late 2000s, as social media platforms have absorbed much of its culture. The site has adapted by adding new boards (e.g., /c/ for content disputes) and updating its software, but its core experience remains largely unchanged — anonymous, ephemeral, and anarchic.

6.2 Continued relevance in meme creation

Despite its diminished size, 4chan remains a prolific source of new memes and internet slang. Formats like "The Wojak," "Doomers," and various "chad" variants continue to originate there. The site’s rapid cycle of creation and destruction means that new trends can emerge and die within days, often spilling over to Reddit, Twitter, and TikTok.

6.3 Comparison with modern platforms (e.g., Discord, TikTok)

Modern platforms like Discord and TikTok have adopted elements of 4chan’s culture (anonymity in certain servers, short-form content, meme-centric communities) but are far more structured and commercialized. Discord offers private servers with persistent identity, while TikTok’s algorithmic feed provides a different kind of ephemeral content. 4chan’s legacy lives on in these platforms’ user-generated humor, but the site’s unique combination of extreme anonymity, low moderation, and ephemeral content remains difficult to replicate. It is often described as the "wild west" of the internet, a formative influence on the modern web’s chaotic creativity.