I have a headache that I face almost every day on my Mac. When I share a presentation externally, I can’t always share the native PPT. I have to distill out a PDF, and I use the native print utility within Mac OSX to creature the pdf.
The challenge is, that I use LOTS of images and graphs in my presentations. This results in 50+ Megabyte files that are impossible to send via email. Resizing these down to a manageable size is not something that is natively available within OSX.
Solution to compressing PDF files natively with OSX
The solution is using quartz filters, and creating an Automator script to create an “application” that you use to compress your files. Below is the procedure to create this on your mac
1. download these set of Quartz filters to your laptop - https://github.com/joshcarr/Apple-Quartz-Filters
2. Unzip the output and copy the qfilter files to your ~/Library folder
3. Open Automater, choose CREATE APPLICATION, select Apply Quarts Filter to PDF document and Drag to the right window. then Choose the DPI from the drop down and Save as Application
4. Save as an application (.App) and then drag the PDF you want to resize over that App file. In a couple seconds your PDF will be shrunk and available on your desktop.