How to Download a PDF

Chrome

With the PDF open as a preview in Chrome, click the downward arrow icon in the toolbar (screenshot below). 

PDF toolbar in Chrome. The third button from the right is a downward arrow that is highlighted.

Firefox

With the PDF open as a preview in Firefox, click the downward arrow icon in the toolbar (screenshot below). Follow the prompts to save the file in the location of your choosing.

PDF toolbar in Firefox. The third button from the right is a folder containing a downward arrow that is highlighted.