I believe that images on the same domain can contribute to search engine rankings (mainly Google), example:http://example.com/image.jpg helps http://example.comSo it is my understanding that using a images on a different domain or a (CDN) content delivery network is not good for SEO. A popular solution is to use a sub domain, such as:http://cdn.example.com/image.jpgQuestion(s):Does hosting images on a sub domain impact SEO?Does hosting images on a different domain impact SEO?Does hosting images on a CDN impact SEO?
Does Google reward sites for using images from different domains, sub domains and CDN's?
seo;google;domains;dns;cdn
Google has said that it sees whatever.example.com as a different site than www.example.com for instance. So, it would make sense that for SEO purposes, hosting the pictures on a sub domain would be a bad idea. However, Google at the same time actively promote the use of CDN's for performance purposes.Google does not consist of just computers, but rather a lot of people who check the algorithms all the time, which is why I'm pretty sure that using a CDN should have no adverse effect on your SEO rankings.But as always when it comes to SEO questions, it's a guessing game and the rules can change with Google's will (or ill-will)...So to sum up:http://cdn.example.com/image.jpg should rank as effectively as http://example.com/image.jpgI doubt it will boost the main http://example.com, however I don't think it'll hurt either.It shouldn't rank differently.Using a CDN shouldn't sacrifice ranking. Perhaps there might be a dip for a while until Google realizes you're using a CDN, but it should bounce back.