How to Compress a PDF on a Mac

By Rose Medlock

A sample icon for the file that needs to be compressed.

You may need to email a PDF to someone, but if the file size is too large, every time you click "Send," you may receive an error message or an email bounceback announcing that your file was undeliverable. If you are using a Mac, you can compress the size of your PDF file in a few simple steps, enabling you to successfully send the document.

Step 1

Find the PDF file you would like to compress. Open it with the Preview application.

Step 2

Choose "File" at the top of your screen, then click "Open."

Step 3

Choose "File" and then "Save As" and select "Reduce File Size" from the pop-up menu. Provide a new file name and location for your compressed PDF file.

Step 4

Click "Save." Your PDF file is now compressed.