Topic on Project:Support desk

Facebook is showing the Creative Commons logo in the bottom right as the default photo for all wiki links, rather than the wiki logo. For example, when posting a link to a page, unless there is an image in the page itself, Facebook by default selects the Creative Commons license image and shows that, rather than the wiki's logo.

Is there any way to set the wiki logo as the default photo for Facebook indexing in LocalSettings?

There are a bunch of extensions that can that do this. Have a look through Category:Search engine optimization extensions. I'm not sure which is the most feature-rich at the moment; last time I looked each seemed to have slightly different uses. But just for setting the image, there should be at least a couple that'll work.