- Extension
- .otb
- .kra
- Format
- Binary
- Binary
- Category
- Raster Image
- Raster Image
- Developer
- Nokia
- Native format of the Krita painting program, developed by the Krita Foundation.
- Description
- The OTB (Nokia Over The Air Bitmap Image) file format is a type of image file developed for use on Nokia mobile devices. These files are specifically optimized for efficient transmission and display on Nokia phones, particularly older models. The OTB format is designed to be compact to facilitate over-the-air (OTA) transmission, which was an essential feature in the era of limited bandwidth and data transfer capabilities. The format supports monochrome graphics, making it suitable for simple images like icons and logos.
- Image file saved by the Krita painting program. A Krita file is a zip archive holding the full layer stack: each layer's pixel data as compressed tiles, its name, position, opacity, blending mode and visibility, plus a merged preview of the whole image.
- MIME Type
- image/x-up-bitmap
- application/x-krita
