White logo with transparent background - not great when you send a link in a text or online.

I have a white logo with a transparent background that looks great on my site since there is an image behind it.  However, when I send the website link in text or post it on Facebook, you can't see the logo because it is white with a transparent background.  Any ideas on how to fix this without changing the logo on my website?  Any idea what is used when a logo/image is included in a link?  My site is not published yet.  Thanks for the help!

Is there a solution for this problem yet?

Having the same issue. Anyone have a solution?

4 hours ago, DonebyDave said:

Having the same issue. Anyone have a solution?

What is your site url? We can take a look

Has this guidance been updated for the latest version of Squarespace?  My white logo (which is great on my site) appears "white" when I link it on any other platforms i.e. linkedin, email etc. and that's not so great.  😞 Any solutions? 

@circlemember, I couldn't locate those steps on the current interface either, but if you type "social..." in the search bar by clicking on the scope icon in the upper left corner, it will pull 'social sharing' up for you (screenshot attached). 

Thank you!