As we know the short pronounce of portable network graphics is PNG. It is a bitmapped image format and video codec that has used for lossless data compression. Portable network graphics has designed to enhance upon and replace Graphics Interchange Format (GIF) as a picture file format. One of the best advantages of it is not requiring any sorts of patent license.
Also, the PNG has designed to support the palette based pictures like 24-bit, 32-bit RGBA colors, and grayscale images with or without alpha channel. Also, the PNG has been evolved for transmitting the pictures on the Online, and it has not designed for professional image print graphics. This technical process has been approved by the Internet Engineering Steering Group in the year of 1996. If you want to use this sort technical process, then you need to understand how to utilize in an image for perfect print quality. Motivation to make PNG format was in 1995, after that it became known as Lempel Ziv Welch data compression algorithm that is used in Graphics Interchange Format that was patented by the Unisys. Also, there were other problems with GIF format, which made the replacement desirable, and notably the limit of 256colors at the time when the computers display more than 256colors were growing very common.
Though GIF enables for animation, then it was decided PNG must be the single image format. The companion format named Multiple image Network is defined for the animation. In 1996: Version1.0 of PNG specification was been released, and then appeared as the RFC 2083 and it became the W3C Recommendation on 1 October 1996. On, 1998: Version1.1, with little changes and addition of 3 new chunks, was been released. In August, 1999: Version1.2, adding extra chunk, was released.