It's easy to crop a PDF on a Mac computer in just a few steps using the Preview app. Here's what you need to know to do it.

You can take a lengthy PDF and turn it into separate files or combine two or more PDFs into one. Here’s how to split and combine PDFs on Mac using Preview.

Use Preview: Open the PDF in Preview, click File > Export, select “Reduce File Size” under Quartz Filter, and save. Use ColorSync Utility: Open the PDF in ColorSync Utility, click File > Export, ...