- Papyless Co., Ltd.
- Japan ()
The longest single panel graphic image in a digital comic is Hitokoma no Kuni no Alice (Alice’s Adventures in One-derland), measuring 163,631 dp, achieved by Papyless Co., Ltd. (Japan) on 19 April 2018.
320 dp x 163,631 dp single panel comic was created to promote a digital comic service called TateComi available on Renta!, the digital manga streaming platform. TateComi allows readers to read digital manga seamlessly by scrolling down instead of swiping to the side to flip a page. The length was measured by density-independent pixels (dp), and it was equivalent to 25.56 metres. The graphic image depicted an adventure of a high school girl in the world of comics.