I released a small update to thepixelator.com today. Originally the Close Pixelate library allowed for remote image parsing through a separate service called by the JS code however now the service no longer works. So as of today, the Pixelator does its own leg work of downloading a temporary copy of the images you want to manipulate. Images are only stored locally for a short period before being deleted.
I’ve updated the github repository, so you’re always welcome to download the script and look at the code. :)