answer:Holy Cow that’s ambitious. There is so little room in 140 characters (x 8 bits per character, that’s 1120 bits of data). The image would have to be tiny and/or lack color/grey-scale variation. Something like a two-tone (black and white) document would be most suitable for extreme compression. Even with Lempel-Ziv compression maybe reducing the original data to 5% of its original size( best case), that would allow for an image with 22,400 bits of information. That’s 933 pixels (roughly 30×30) of normal color image information, If the image were two-tone it could be about 150×150 pixels. This still assumes the image pattern lends itself to that much compression, a lot of images would be a few times these sizes at best, if you are not going to lose information. The receiving party would have to have a de-compressing app to reconstruct the image, and some way to get the twitter text into that app. Kind of a fun geeky exercise though….