Foil stamped hardcovers are all the rage in the book market at the moment. Your foil transparency files are supplied in both PNG (with a transparent background) and in a PDF print-ready file for your printer. If your foiling is one color only, you will receive a total of two files (one PNG and one PDF). If you are doing multiple colors of foiling, you receive a PNG and a PDF for each color layer plus a PNG and a PDF for a complete composite showing all layers combined.
