Convert otb to isobrl

What is the difference between .otb and .isobrl?

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.; ISO/TR 11548-1 Braille is a file type used for storing braille documents in a digital format. It is based on the ISO/TR 11548-1 standard and can be used for storing textual documents in a standardized way. It is used in many countries and is especially helpful for people who are blind or visually impaired.