A fansub is a fan-made subtitled version of an anime episode, translated and distributed by volunteers without authorization. Fansubs were the main way international audiences watched new anime before legal simulcasting existed.
Fansubs were infrastructure. Through the 1980s and 1990s, tapes traded by mail carried handwritten timing and translation by volunteers; the digital era after 2000 turned that into organized groups releasing subtitled episodes within hours of broadcast, with elaborate typesetting and translation notes. For a generation, the fansub was simply how anime abroad was watched.
The practice existed in a legal grey zone it never escaped: fansubs are unauthorized copies of copyrighted work, distributed free by fans who argued, with some justice, that they were building a market the industry refused to serve. The industry's eventual answer was the simulcast, which adopted the fansub's speed and made it legal, and fansub groups wound down as official releases matched their pace.
This site's position is the simple one: fansubs are history, recorded here as vocabulary because the era shaped the fandom's language and expectations. Our canon is built from official releases, and nothing in our content links to, teaches, or depends on unauthorized distribution. Fansub groups developed elaborate internal cultures of their own, with translation notes, staff credits, and rivalries, and their archives remain a primary source for how the era actually worked.
In use"In 2004, a new episode reached overseas fans as a fansub within a day; by 2014, the simulcast had taken that job."