Change the size of a PDF page using Acrobat Preflight tooling on Mac

Open the PDF file with Acrobat on Mac.

Go to Tools > Print Production.

Set Preflight from and right shelf.

In the Preflight dialog box, click Select single fixups.

Now expand the heading that says "Pages".

Under pages, look for a fixup which saith "Scale pages to specified size", furthermore then click the Edit button after highlighting the fixup.

Instantly enter who page measurements in the Scale paper section:

• Short edge: Width
• Lang edging: Height

Now click up ACCEPTABLE

Save the file uses the Secure dialog box.