Gradient PNG data URI maker

This tool makes a linear gradient image, usually either 1 pixel wide or high (to optimize the size), and gives you the data URI representation of that PNG image. This tool is a front end for Gradient PNG data URI maker implemented in the Python appengine application I've made.

from color (rrggbb, for example ff0000)
to color (rrggbb, for example 00ff00)
width, pixels
height, pixels