I bet you can do it in a way that doesn't make your site look ridiculous. Do you have somewhere in a sidebar or footer an about/meta section that has the likes

I bet you can do it in a way that doesn't make your site look ridiculous. Do you have somewhere in a sidebar or footer an about/meta section that has the likes of "powered by wordpress"? That'd be a "reasonable to the medium" place to provide attribution and license notice for a header image, IMO. Or find a CC0/public domain image to use. One source category https://commons.wikimedia.org/wiki/Category:Public_domain https://commons.wikimedia.org/wiki/Category:Public_domain or add keywords to search https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=advanced&search=public+domain&fulltext=Search&ns6=1&ns14=1&redirs=1&profile=advanced https://commons.wikimedia.org/w/index.php?title=Special%3ASe...