So it appears that when Printscale = shrink (that was the default on my Sumatra installation because I had never opened the advanced settings before let alone made alterations) this setting over-rides the Print to PDF selection - whose default size is A4. With Printscale = fit I found that now when I used Microsoft Print to PDF the new file properties showed the page size as A4 and when printed to paper the page output was A4 size as well. It appears that if Printscale is set to “shrink” then it doesn’t matter whether the printer driver is set to “fit to page” this instruction is over-ridden by the Sumatra setting. They did not require defaults to be changed. All other applications I tried to view and print the file to paper so that they came out filling the A4 page size did so automatically. While this appears to be the solution I am wondering why it all had to be so difficult.

Since the Print to PDF method did not work I changed the Printer default from Printscale = shrink to Printscale = fit.Īfter restarting Sumatra and loading the file again I found that it printed correctly to fit the A4 page. If you are always needing to “Fit” then it is worth changing the default Settings > Advanced Options PrinterDefaults [

Sumatra pdf printer