How to compress a PDF under a Mac

Some PDF files will be larger and bigger because they contain a lot of pictures or as they continue to be edited, and we can use the Mac built-in Preview (Preview) program to help thin out these bloated files.

Open PDF file with preview;

Select Save As ... on the File menu;

In the Save As ... dialog box, in the Quartz filter option, select Reduce File Size;

Save the document.

Print

When we initially build the PDF, we can reduce its size.

Note: the "Compress PDF" option is available by default in the Print dialog box in 10.4 (Tiger) and is not shown directly in 10.5 (Leopard). Therefore, we need to install the Compress PDF Workflow to reactivate this feature.

In any program, select the "Print" menu;

In the Print dialog box, click the "PDF" button and select "Compress PDF";

Save the document.

Under 10.4 (Tiger), you can also compress PDF documents by using the filter options:

In any program, select the "Print" menu;

In the Print dialog box, click the "Copies & Pages" Drop-down list and select "ColorSync";

Click on the "Quartz Filter" Drop-down list and select "Reduce File Size".

Save the document.

Warning: Reducing file size may reduce display and print quality, and may lose bookmarks.