Convert spu to webp

What is the difference between .spu and .webp?

Description: The SPU file type is associated with Spectrum 512, an image file format used by Spectrum 512, a program designed for the Atari ST series of computers. Spectrum 512 was notable for its ability to display up to 512 colors on screen simultaneously, a significant achievement for its time given the hardware limitations. The SPU file typically contains bitmap images created or manipulated within the Spectrum 512 program, capturing the detailed and vibrant graphics that were possible with this advanced color display technology. These files are primarily of interest to enthusiasts of vintage computing and digital art historians studying early computer graphics.; 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.