Do images on a CDN affect my Google Ranking?

[Amosnet]

I have recently switched my images to a CDN (MaxCDN) and all of the images within my post are now get loaded directly from the CDN.

Will this affect my Google ranking? Do Google care if the image is hosted physicaly on the domain?

[RobertFisher]

Amosnet,

Where the image resides as a static file does not matter. Whether served by the CDN or your site, any image still needs to have good alt text associated with it (describe the image as opposed to 33 keywords). The CDN will probably offer some benefit (especially if you have a lot of JS or images, etc.) as it should increase page load speed. I do not know how much value is allotted, but I do know once you start going over about 5 sec. it begins to affect adwords. We try to keep all or ours to about 2 to 3 sec. max.

Best

[Amosnet]

Thanks Robert for the detailed answer. Very helpful!