Convert bm to png

What is the difference between .bm and .png?

Description: The BM file type, associated with X11 Bitmap, is a monochrome bitmap image format used on the X Window System, which is commonly found on Unix and Unix-like operating systems. It stores black-and-white images in a plain text format, where each pixel is represented as either on (black) or off (white). These files are often used for simple icons and cursors within the X11 graphical user interface. Due to its simplicity and text-based nature, BM files can be easily edited with standard text editors.; A PNG file is an image file stored in the Portable Network Graphic (PNG) format. It contains a bitmap of indexed colors and uses lossless compression, similar to a .GIF file but without copyright limitations. PNG files are commonly used to store graphics for web images.