In Excel 2016 for Windows, accessed via Office 365, there's a new option to share your workbooks with others. If you are sharing your workbook using OneDrive, OneDrive for Business, or SharePoint, you can do all your sharing without leaving the comforts of Excel.

All you have to do is click on the 'Share' button in the top right corner of the Ribbon, send as an attachment and select 'Send a PDF'. Simple!

You can find step-by-step instructions on this new feature here should you wish.