Basics of Digital Image Sizing
One of the most common mistakes made by new My Artisan Web users is to use excessively large image files on their websites. Understanding some basics of digital imaging is essential to having photos or other visual art display properly on your website.
In digital imaging, "large" can refer to two different measurements: file size and dimensions.
File size is measured in kilobytes, and refers to the amount of memory space a file takes up on your computer or website. File size can be thought of as the "weight" of the image, with some files "heavier" than others.
Dimensions are the height and width of the image. Dimensions are always measured in pixels, NOT in inches or centimeters. New users sometimes struggle with measuring images in pixels rather than a more familiar measurement. For a better understanding of pixel dimensions, check out this excellent tutorial.