Create Custom Paper Sizes
For these steps to work, you must have Adobe Reader installed on your computer and a PDF file open in your browser window.
At the bottom of the browser are the Adobe Reader controls. The controls will show and hide if your mouse hovers over them. You will need to drag your mouse to the bottom center of your browser window for them to appear.
Click the Printer icon.
In the lower left corner, click Page Setup, a warning window will pop up, click Yes. You can also check the box “Do not show this message again”
Click on the Paper Size drop-down menu. At the bottom of the list, select Manage Custom Sizes.
In the Custom Paper Sizes window, click the + sign to create a new custom paper size. It will create a new paper size labeled “Untitled”. Make sure “Untitled” is selected from the left hand menu and enter the approximate width and height of your paper. Leave the “Non-Printable Area” set to “User Defined”.
In the left hand list, rename the paper size by double clicking “Untitled” and the text will become editable. Name it something that describes the page size, like the dimensions, i.e. 6.5 x 9.375.
Create all paper sizes that are needed, Click OK to save.
Select and Print on Custom Page sizes
Open the PDF you would like to print. Hover over the bottom center of the Safari window to make the Adobe Reader controls appear and Click the Printer icon.
In the lower left corner, click Page Setup, a warning window will pop up, Click Yes. You can also check the box “Do not show this message again”
Click on the Paper Size drop-down menu, the custom pages will be near the bottom. Select your Custom Page Size and click OK
On the Print dialog screen, make sure that the Actual Size option is selected, under “Size Options” and click Print.