The largest sheet of handmade washi paper measures 13.9 m x 6.9 m (45 ft 7 in x 22 ft 7 in) and was made for an event organised by Masaki Takahashi, the mayor of Takaoka City, and Kazuki Maeda from Toyama University (both Japan) at Takaoka Municipal Festival Hall, Takaoka, Toyama, Japan, on 19 August 2009.

Washi is a type of paper made in Japan. It is commonly made using fibers from the bark of the gampi tree, the mitsumata shrub (Edgeworthia papyrifera), or the paper mulberry but also can be made using bamboo, hemp, rice, and wheat.