Also if you can't access this command for whatever reason, another option is to open the print dialog box in Chrome and set the destination to "Save as PDF" and

Also if you can't access this command for whatever reason, another option is to open the print dialog box in Chrome and set the destination to "Save as PDF" and it will work. You'll even get to see a preview. It's very useful for 1 off saves where you want to consume a really long post offline in a PDF viewer.