How to save a webpage as PDF? (where is it?)

[David]

Hi,

I'd be grateful to know how to save a webpage as a PDF.
I have Hardy Heron.
In Firefox I choose File > Print.

(I have no printer.) The Print dialogue box shows 'Print to file', and I
select the only option that's there, PDF, and click on "Print".
I can't work out where the PDF file is (what folder) - gives no
indication of where the resulting PDF will be found.

Thanks

Dave