Commonly used image compression techniques reviewed.. (I) For black lines , image of constant size : Original image format : bmp ; size : 291 kb 1. gif : 1.48 k | 196 times compression 2.png : 3.19k | 91 times compression 3.jpg : 5.07k | 57 times compression _____________________________________________________ (II) For a hand drawn picture , 24 million colours, Original image format : bmp ; size :291 kb 1.gif : 3.72k | 78 times compression , texture loss 2.png:5.72k | 50 times compression 3.jpg:10.1k | 28 times compression , terrible loss _____________________________________________________ (III) For pictures/photos Original image format: bmp ; size :1.37 mb 1.jpg : 94k | 14.57 times compression 2.gif : 192 kb | 7.13 times compression , texture loss 3.png: 1.17M | 1.17 times compression (c) Universpace 2005