The standard template, which opens automatically when you start the program, defaults to a 8.5” x 11” paper size. If your PDF is a different size, you need to make sure your settings match up. You can do this a couple of different ways:
1) Import PDF: If the PDF you choose to import is not the expected 8.5” x 11” size, a popup will appear asking you to select how you want to handle the file. You can either “Clear project settings and use the page size of the selected page” (recommended) or “Use page size of current project and resize the selected page” (not recommended). For the most consistent results, we highly recommend you design your PDF file to the proper page size when printed without scaling.
2) New Template: You can also start a new template (Ctrl + N) and set the job up to any size you desire with or without importing a PDF. In the New Template window you can choose your printer and select your page size from one of the three choices: Standard: a pull-down menu of your printer’s common paper sizes appears. Custom: Only available if your printer allows for custom sizes, or from PDF: you can select a PDF and the job will be automatically set to the file’s dimensions.