Convert otb to cmx

What is the difference between .otb and .cmx?

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 format used by Corel programs, such as CorelDRAW, Corel Presentations, and Paint Shop Pro; also used for storing vector-based image files included with Corel Mega Gallery Clip Art; includes image data as well as metadata that describes the image.