I used Word, so I don't know if this will help. I just imported the file onto a blank page, and then kind of guessed how big it should be. I would say for my size 2-4 shirts, it was probably a little bigger than 4x6. I always printed a grayscale page first, cut it out, and placed it on the shirt to get an idea. The nice thing was I could often get both boys' transfers on one shirt since they were small (if they were rectangular designs). I got 21 shirts out of 18 pages this way. If you'd like I can measure my YDS's images and see how big they are to give you a better idea.