PPM is an image file format used for storing portable pixmaps. It is a simple format designed for portability, with wide support in image processing software. PPM files store pixel data in an uncompressed format, making them large but easy to read and manipulate in various image editing programs.
PNG is a lossless image format that supports transparency, making it ideal for logos, icons, and web graphics. Unlike JPEG, PNG doesn’t lose any image data during compression. It retains high-quality detail, especially in images with sharp edges, and is commonly used for design work where transparent backgrounds are required.