How do you add password feature/button to view .pdf document

Hello,

Thanks for the question about password protecting a PDF document. There are two ways to password protect a PDF file.  You can directly require a password to open a PDF using a PDF editor like Adobe Acrobat.  This is not something that is part of the WordPress functionality.  You would need to use a PDF editor like Adobe Acrobat in order to enable the password requirement.

You can also add a page or post and then publish it as a Password Protected page or post. Then the page or post and anything in it would not be available unless the user types in the password.

1. Log in to the WordPress Administrator Dashboard
2. Open the Post or page where you have added the PDF file
3. In the Publish section, click on EDIT next to the Visibility label.
4. Select Password Protected and then type in a password.
5. Click on PUBLISH button to save your changes.

When you view the page or post, it will look like this:

I checked this and PDF files are apparently not embedding with BoldGrid.  My suggestion (and recommendation) is to simply install a PDF Embedder plugin.  The one I downloaded allowed me to upload the PDF file into the Media library and then insert into the post with no issues. I was able to preview the post and see the PDF immediately.