What is the best image size for my website or blog?

By Tamy Bond

I find that many don’t pay attention to the file size of the images they upload to their website or blogs. This can drastically increase your load time. So why should this matter? You only have few seconds to make a good impression, generally, about 5. If your site or blog doesn’t load quickly your viewers may move on rather than skip it or wait.

Here’s a good article that goes into more detail: http://www.1dogwoof.com/10-tips-best-image-size-blog/