Convert bw to png

What is the difference between .bw and .png?

Description: The bw file type is associated with Silicon Graphics RGB, a bitmap image format developed by Silicon Graphics, Inc. (SGI). It is specifically designed for grayscale images, utilizing a single channel to represent varying shades of black and white. The format is known for its use in graphics and visualization applications, especially in environments where Silicon Graphics workstations were prevalent. BW files are capable of storing high-quality images with efficient compression, making them suitable for both professional graphics work and scientific visualization.; 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.