PNG, or Portable Network Graphic, is a file format for image compression. A PNG file is compressed in a lossless manner which means all the original data is perfectly reconstructed from the compressed data. Usually, an image in a PNG format can be 10 to 30% more compressed than in a GIF format. Unlike GIF, PNG format does not support animation as it cannot contain multiple images. A PNG file is not envisioned to replace the JPEG format, which is lossy but lets the user choose one between file size and image quality while compressing. Some features of PNG format are: 1. Developing PNG is faster as compared to GIF. 2. Not only multiple colors can be made transparent but also, the degree of transparency for them can be controlled. 3. Images can be tuned, in terms of color brightness as per the requirement. 4. Images can be saved using true color as well as in the palette and gray-scale formats provided by the GIF.