How to Make PDF Files Smaller on the Mac. PDFs are extremely versatile for business, particularly for sending different types of formatted documents and media in one multi-page file.

How to Downsize a Large PDF to a Smaller JPEG File. Adobe Acrobat, the native application for creating and editing PDF files, contains many tools that can be used to modify PDFs.

One alternative is to create PDF documents using Adobe’s online system. With a trial subscription, you can create five PDF files from other documents, just to get a feel for how the system works.