Viewer path & pdftk path

External stylesheet - check it if you want to use external style sheet in order to customize look&feel of PdfTk-QGUI.
Use button to the right (it shows the name of currently selected css file) to specify existing css file. You can edit selected css file from preferences dialog (Edit CSS tab). Click 'Preview' button to see, how standard elements will look like using your style sheet (this operation won't save changes you've made to your css file)
If you uncheck 'External stylesheet' , you will only be able to specify:

• Font, font size and color of report field's text
• Report field, catenate, burst, attach and encrypt dialogs background images (one common for all or separate for each one)
  To specify background image, select 'image' radio and desired image file from drop-down list (in case you have any images in your database - read here how to add images in your database) or select 'Custom' to specify background image for each dialog separately.
  If you select 'Color' radio, you will only be able to specify report field's background color

NB

1. You can specify color by selecting it with the help of special dialog (click for this dialog to be shown), or you can input it by hand in the following format: #RRGGBB (R, G and B are hexadecimal digits)
2. To add an image to the database, click 'Add' button in the appropriate section
   To remove image from database, click 'Remove' button in the appropriate section.
   If database exists, it will be automatically loaded at dialog's startup.

PDF Printer:
QPrinter is used to convert TXT and HTML documents to PDF. Use this tab to change page orientation, color mode, page order and resolution of converted document.

Scripts: