(Re)Acquaint Yourself with Preview
You’ve probably used Preview many thousands of times over the years, but we want to kick off the book with a few setup and configuration reminders so everyone is on the same virtual page.
Preview is designed to work with both graphical images (in common formats like JPEG, PNG, GIF, and TIFF) and PDF documents, the Adobe-created Portable Document Format that’s ubiquitous on the internet for electronic versions of paper documents.
On the face of things, images and PDFs are fairly similar, and you can do many of the same things with them in Preview. However, there are situations where the same tools in Preview work somewhat differently depending on whether you’re manipulating an image or a PDF. The result is that ...