How to allow Google Doc to display hotlinked files?

This has nothing to do with WordPress itself.

Read https://perishablepress.com/press/2007/11/21/creating-the-ultimate-htaccess-anti-hotlinking-strategy/

RewriteCond %{HTTP_REFERER} !^https?://([^.]+\.)?google\. [NC]

would be what I would use. No telling what CDN they’re using.

Thanks Ipstenu for your reply. I will make a try with this

But this is not working for me
I used the below code with changes

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^https://(www\.)?mydomainname.com/ [NC]
RewriteCond %{HTTP_REFERER} !^https?://([^.]+\.)?google\. [NC]
RewriteCond %{REQUEST_URI} !hotlink\.(gif|png|jpg|doc|ppt|xls|pdf|html|htm|xlsx|docx|pptx|swf) [NC]
RewriteRule .*\.(gif|png|jpg|doc|ppt|xls|pdf|html|htm|xlsx|docx|pptx|swf)$ https://mydomainname.com/ [NC]

That’ll only look for, I think, files named hotlink, but I’m not sure.

Anyway, that’s something you should probably ask on StackExchange. It’s not a WP question.

Pitty.
No one in stackoverflow able to give me a solution
See my post https://stackoverflow.com/questions/9488339/how-to-allow-google-doc-to-display-hotlinked-files