How to reduce the PDF page size:

1. Open your original PDF file in Adobe Acrobat Professional 6.0 or above.
2. Choose File > Print.
3. Choose Adobe PDF in the Printer Name box:
   
4. Click on Advanced:
   
5. Click on Advanced and then select 300 dpi, and then click on OK
   
6. Click on OK again: (Click off “Auto-Rotate and Center” to keep the same layout.)  
   
7. Save the resized PDF file: