Notice the device specific images? If you don’t get images you’ll be directed here and asked to submit images for other users. This just left projector support, which was also pretty easy to add:
So, then I moved onto calibrating printers. Normally people only want to profile the local printer, but I really want to profile the printer I use on a weekly basis: Snapfish. The idea of a print shop is you upload image files and in a few days time you get then back in the mail. Now GCM allows me to generate 7 photos worth of calibration squares and when I receive the photos I can generate the ICC profile so all subsequent photos are color compensated:
All the code is in git master, although the print shop feature is not quite finished yet. Yell if it breaks.