This article will show you how to easily add/attach file like PDF, Word or any other to Excel 2013/2016 spreadsheet.
Go to INSERT tab
Click Object button
or in case of smaller Excel 2013 window or any size Excel 2016 window:
Click Create from file and browse for the file.
Checking Link to file will cause file not to be attached to Excel file – only linked to a location on a local disk.
This means that link will be broken (it will not be possible to open attached file) if you delete attached file or send the Excel document to someone who does not have attached document at the same location on disk as you.
This method attaches whole object not only first page for example whole Word or multi page PDF document.
First page might be shown as a preview, but when you double click the attached object then entire document will be open and available to the user.
I recommend to add a text/information at the top of the spreadsheet like “Notice: Double-click attached documents to see full content.”