Here is a 250 lines jpeg decompressor written using vanilla python https://github.com/aguaviva/micro-jpeg-visualizer https://github.com/aguaviva/micro-jpeg-vis

Here is a 250 lines jpeg decompressor written using vanilla python https://github.com/aguaviva/micro-jpeg-visualizer https://github.com/aguaviva/micro-jpeg-visualizer Enjoy the 5 lines (but slow) IDCT :) for y in range(0,8): for x in range(0,8): nn = an*math.cos( n* math.pi * (x +.5)/8.0 ) mm = am*math.cos( m* math.pi * (y +.5)/8.0 ) self.base[ XYtoLin(x, y) ] += nn*mm*coeff