Convert grb to png

What is the difference between .grb and .png?

Description: The GRB file type, associated with HP-48 and HP-49 series graphing calculators, stands for "GROB," which is short for "graphics object." This file format is used to store graphical data, such as images or graphical representations, that can be displayed on these calculators. GRB files allow users to transfer and share graphics between calculators or between a calculator and a computer. This capability enhances the functionality of the calculators, making them versatile tools for education, engineering, and mathematical analysis.; 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.