Convert rpgm to webp

What is the difference between .rpgm and .webp?

Description: The RPGM file format, short for Portable Greyscale Map, is a type of image file that specifically stores greyscale graphics or images. It is designed to represent images in various shades of gray, ranging from black to white, without any color information. This file format is typically used in applications or environments where color is not necessary or desired, such as certain types of scientific imaging, document scanning, or specific graphic design projects. RPGM files are part of the Netpbm format collection, which also includes formats for black-and-white and color images.; A WEBP file is an image saved in the WebP (pronounced "Weppy") raster image format developed by Google for web graphics. It is designed to reduce image file sizes over standard JPEG compression while maintaining the same or similar quality. WEBP files allow images to be downloaded more quickly.