Windows 10 has a built-in print-to-PDF functionality in the OS that can be used by all applications.
In Windows 8 there’s no built-in print-to-PDF functionality, so you have to do it in other ways:
if you use Chrome, there’s a built-in PDF print. Select Print, under Destination, click Change and select Save to PDF.
For Internet Explorer you have to install a PDF printer driver, e.g. CutePDF Writer
CutePDF can also be used in Chrome and Firefox.
Alternatively, you can use an online service where you paste the URL which is then converted to a PDF.