You can change the printer settings from the control panel. Change it from the control panel not the printer options when printing. Changing default in control panel Open Device and printers from the control panel. Right-click the printer that you are using. Select Printing Preference Another window will appear. Change from Portrait to Landscape. Click OK To ensure its default is a4 size click ADVANCED on the same window shown above and change the paper size output. If this doesn work you can always convert your PDF paper size using online PDF converters. Try DeftPDF online s for the second solution. It can help you rotate PDF pages and change sizes using its free tools.