Ugoira Animated Image File
2.4 | 5 Votes
What is a UGOIRA file?
The Ugoira format is designed for creating animations on the pixiv.net site. UGOIRA files are similar to animated .GIF files and improve on the GIF format as they are not restricted to 256 colors and are commonly smaller in size.
NOTE: UGOIRA files can be opened by Honeyview, an image viewer for Windows.