The number of Japanese-language articles on Wikipedia has passed the 1 million mark, eclipsing Japan's most well-known printed encyclopedia and growing by more than 100 entries per day.
The Japanese version of the crowd-sourced online encyclopedia was inaugurated in 2001 following the launch of the prototype English site the same year. The Japanese venture hit milestones of 100,000 entries in 2005, half a million three years later and 1 million in January this year.
Japanese ranks 13th in entry volume, following Vietnamese, among the nearly 300-language varieties of the Wikipedia world funded by the U.S. nonprofit Wikimedia Foundation. English has the most extensive coverage with more than 5 million items.