Welcome to part three of this three part series on preparing your pictures for the web. In this post, we’ll go over the different types of picture files you can use on your website, and which ones are best for different situations. The primary considerations are image quality and file size. Of course you want your pictures to look nice, and some file formats will look nicer than others depending on the type of picture. Also, large file sizes can slow down your website and cause impatient visitors to go elsewhere, so you want to be sure you have the smallest file size that still looks good. Again, depending on the type of picture, some formats are better at this than others.