A JavaScript tool for pixelating an image into a grid of divs. It works by converting the image into a div of floated divs, each with their background color set to the average color from that area of the original image and the parent div's width set to the width of the original image.
For usage instructions see divify.js and for a more elaborated overview, see demo.html. A live version is available here: http://www.nedned.net/index.py?x=divify.