How to open a file on the site using GOOGLE DOCS without the possibility of downloading?

Question

Google

I am currently using an iframe viewer, but the problem is that it is easy to download.
It is necessary to somehow limit the possibilities and make it so that the user can only read / view documents.
Who faced, please help

Answer 1

https://venturebeat.com/2015/07/14/you-can-now-dis...

Answer 2

imgur.com/a/HWE2l