Exporting to pdf

Using dubscript on my Chromebook. How do I export to pdf? I can see fdx etc... in the save as menu, but not an option for pdf. Do I have to subscribe to do this?

On the read screen there should be a printer icon on the menu bar. If your screen is too small, it should be a menu item ("Print & PDF..."). If you press it, you should see a Print Preview screen. Make sure "Save as PDF" is selected. (You may also see other local or cloud printers as well.) From there, press the "PDF" round icon and it should ask you where you'd like to save the PDF.