“A picture is worth a 1,000 words.” If you’ve heard it once, you’ve heard it 1,000 times. For those of us who write for a living, pictures don’t replace the words we write but give the words we do write a chance to sink in. How?
Pictures, images, even some of the very words we write used as pull-quotes improve readability. Instead of looking at a page entirely of text, the reader can pause a second to take in the picture or image. This lends favorably to the reader actually retaining something about what the written piece is about.
With people skimming through e-mails, newsletters, and articles at breakneck speed, adding images to a piece may not tell the entire story—but it will get the reader to slow down and maybe stay a short while, rather than clicking.