All Macs can create a PDF of anything that you want to print. You can use this feature to cut costs on paper and ink by keeping a digital PDF copy on your computer rather than printing a copy.
Step-by-step guide
1. First, open any document or webpage that you can print (in this example I am using Safari to print a webpage).
2. Click on File in the Menu Bar and then select "Print..." from the drop-down options.
3. On the print dialogue box, click on the PDF button in the lower left corner. Then click "Save as PDF…"
Note:
You can change printer settings before you save to adjust how your PDF file will look. For instance, the number of pages, orientation, etc.
4. Choose a name and location to save the file and then click Save. You now have a PDF document that can be emailed, opened on almost any computer, and printed later.