Open the PDF file with Acrobat DC on Mac.
Open the PDF file with Acrobat DC on Mac.
Go to Tools > Print Production.
Select Preflight from the right pane.
In the Preflight dialog box, click Select single fixups.
Now expand the heading that says "Pages".
Under pages, look for a fixup which says "Scale pages to specified size", and then click the Edit button after highlighting the fixup.
Now enter the page measurements in the Scale pages section:
Now click on OK
Save the file using the Save dialog box.
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