How to set pages to export all doc's in PDF format as default

File > Export To > PDF (good better best quality). There is no Save to PDF. There is no default export to PDF configuration. If you send electronic PDF invoices via email, one can use the Share icon on the Toolbar, and then choose Send a Copy, Email, and PDF. That will convert the Pages document to PDF and automatically attach it to a new email compose window.

There are ways to automate PDF export from Pages documents, but they all require AppleScript programming.

Fastest is to Print to PDF.

Peter

You can use Automator action –Launch AppleScript, insert following code into:

set destF to (path to desktop folder)

tell application id "com.apple.iWork.Pages"

set fName to name of the front document as string

set fName to text 1 thru -7 of fName

set destLoc to ((destF as string) & fName & ".pdf")

export front document to file destLoc as PDF

end tell

Select no input, you can limit this service for Pages only (not necessary), and save it as Service.

In system Preferences you can now add shortcut for this action.

Script always export front (active) document to PDF on your Desktop (overwrite existing!!).

This could help: http://www.ostricher.com/2014/12/how-to-assign-keyboard-shortcuts-for-os-x-apps/