Easy image processing with Python

Free Math Worksheets at DadsWorksheets.com: "I built all of the recent geometry worksheets using graphics saved in PNG format, which is a loss-less file format, making it somewhat more attractive relative to the older JPEG format. PNG isn’t a terribly new file format, but some people (including my wife) have had trouble printing the new worksheets. What I really needed to do was convert the 361 PNG files on which I’d labored over into JPEGs and then regenerate the worksheets. Not much fun for a lazy guy like me."