I have a simple 2-page PDF file open in Preview. I want to export a single page (happens to be the second page) from that file to a PNG.

Apple Preview features While Apple Preview’s interface is generally consistent, there are some dynamic UI elements that will change depending on the file type you’ve loaded.

Any additional file controls had to be set in another program. By adding PDF-level permission control to Preview, Apple also had to update how you set a password for the file.