PDFs are also an excellent way to quickly save “snapshots” of web pages for future reference. Since some web pages change frequently, PDFs are a useful way to capture or archive content that might be hard to find again later.
To save a document or web page as a PDF, open it and press Command-P, just as though you’re going to print the page. But instead of clicking Print or pressing the Return key, click the PDF button in the lower left corner of the Print dialog. Choose Save as PDF at the top of the menu, navigate to the location you’d like to save to, and click Save.
The PDF button also contains other useful options. Mail PDF opens a new message in Apple’s Mail program, with the PDF already attached. Encrypt PDF lets you protect your file with a password. And Compress PDF creates a more compressed version of the file — great for emailing large, multi-page PDFs.