Portable Network Graphics is a raster-graphics file format that supports lossless data compression. PNG was developed as an improved, non-patented replacement for Graphics Interchange Format — unofficially, the initials PNG stood for the recursive acronym "PNG's not GIF"
PNG supports palette-based images, grayscale images, and full-color non-palette-based RGB or RGBA images.
Transparency: support transparency, you can apply transparent backgrounds images.
Lossless, lossy compression: PNG files benefit from lossless compression. Which means there's no loss in quality each time a file is opened and saved again
