Convert ps to otb

What is the difference between .ps and .otb?

Description: A PS file is an image saved in the PostScript page description language. It may contain vector graphics, raster graphics, and text. PS files can be printed directly by a PostScript printer (i.e., containing a Raster Image Processor) without being opened in an application.; 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.