Convert sunsr to png

What is the difference between .sunsr and .png?

Description: The Sun Rasterfile (extension: .sunsr or .ras) is a raster graphics file format primarily used on Sun Microsystems computers. It was designed for storing bitmapped images, including color and grayscale images. This file format supports various depth and color models, accommodating everything from monochrome to full 24-bit true color images. It became a standard for exchanging bitmap images on SunOS systems, though its usage has declined with the advent of more versatile image formats.; 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.