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.
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.