PNG

Property	PNG Portable Network Graphic
Color System	8 bit indexed (256 colors) RGB (24 bit; millions of colors)
Compression	Lossless Compression
Other Features	.png file extension Transparency Animation through non-standard extension
Typical Uses	Any
Property	PNG - 8 bit	PNG - 24 bit
Photograph 250 × 188 px	25.8 kb (indexed, 8-bit)	81.9 kb (RGB, 24-bit)
Illustration 148 × 179 px	1.02 kb (indexed, 8-bit)	1.89 kb (RGB, 24-bit)