Portable Network Graphic
PNG is essentially a form of storage that losslessly stores data from raster graphics using a deflation algorithm. The intent was for PNG to become a free GIF alternative. Three raster image types are supported – colour, colour-indexed, and greyscale images. All the graphical info data in a PNG image is compressed for easier storage.
Joint Photographic Experts Group
JPG is a popular extension to save web graphics or photos. it uses compression, which makes transferring and downloading files easier. It’s based on a colour palette made up of 24 bits. Care needs to be taken when compressing since the image quality degrades more heavily during decompression the stronger the compression effect.