What is PNG image ?
PNG (Portable Network Graphics) is an extension of the popular GIF format developed by its creator, Steve Wilhite, in 1995. The format was developed to overcome some of the shortcomings found in GIF images. Like GIF, PNG can be used to display images with 256 colors (8-bit color). PNG also supports 24-bit color images and supports transparency, but not animation. PNG files can be significantly larger than GIF files because they use less compression, but they are still supported by nearly all web browsers and image editors. Like JPEG files, PNGs can also be compressed to save space and reduce download times.